<PAGE>   1
===============================================================================

                                 UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


                                   FORM 10-Q


          [X] Quarterly Report Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934

                 For the quarterly period ended: MARCH 31, 2000

                                       or

          [ ] Transition Report Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934

               For the transition period from _______ to _______


                         Commission File Number 0-2908


                           GTE NORTHWEST INCORPORATED
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


                WASHINGTON                                       91-0466810
      (STATE OR OTHER JURISDICTION OF                         (I.R.S. EMPLOYER
       INCORPORATION OR ORGANIZATION)                        IDENTIFICATION NO.)

1255 Corporate Drive, SVC04C08, Irving, Texas                       75038
  (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                        (ZIP CODE)

        Registrant's telephone number, including area code 972-507-5000


              (Former name, former address and former fiscal year,
                         if changed since last report)

The registrant, a wholly-owned subsidiary of GTE Corporation, meets the
conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and is
therefore filing this form with reduced disclosure format pursuant to General
Instruction (H)(2).

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

                                                            YES   [X]    NO  [ ]

The Company had 17,920,000 shares of no par value common stock outstanding at
April 30, 2000. The Company's common stock is 100% owned by GTE Corporation.

===============================================================================




<PAGE>   2

PART I.  FINANCIAL INFORMATION

Item 1.  Financial Statements

                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY
            Condensed Consolidated Statements of Income (Unaudited)

<TABLE>
<CAPTION>

                                                 Three Months Ended
                                                      March 31,
                                               -------------------------
                                                  2000          1999
                                               ----------     ----------
                                                 (Dollars in Millions)
<S>                                            <C>            <C>
REVENUES AND SALES
     Local services                            $    124.4     $    115.4
     Network access services                        128.8          115.3
     Other services and sales                        48.3           49.8
                                               ----------     ----------
        Total revenues and sales                    301.5          280.5
                                               ----------     ----------
OPERATING COSTS AND EXPENSES
     Cost of services and sales                      84.5           83.3
     Selling, general and administrative             38.9           42.7
     Depreciation and amortization                   56.8           54.3
                                               ----------     ----------
        Total operating costs and expenses          180.2          180.3
                                               ----------     ----------
OPERATING INCOME                                    121.3          100.2
OTHER EXPENSE
     Interest - net                                  13.5           13.8
                                               ----------     ----------
INCOME BEFORE INCOME TAXES                          107.8           86.4
     Income taxes                                    39.8           31.9
                                               ----------     ----------
NET INCOME                                     $     68.0     $     54.5
                                               ==========     ==========
</TABLE>



Per share data is omitted since the Company's common stock is 100% owned by GTE
Corporation.

The accompanying notes are an integral part of these statements.


                                       1
<PAGE>   3


                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY
               Condensed Consolidated Balance Sheets (Unaudited)

<TABLE>
<CAPTION>

                                                                         March 31,     December 31,
                                                                           2000            1999
                                                                        ----------      ----------
                                                                           (Dollars in Millions)
<S>                                                                     <C>             <C>
ASSETS
Current assets
    Cash and cash equivalents                                           $      0.1      $      1.4
    Receivables, less allowances of $18.0 million and $17.9 million          226.3           275.4
    Receivables from affiliates                                               16.5            19.4
    Inventories and supplies                                                  27.6            16.9
    Net assets held for sale                                                  16.3            16.0
    Prepayments and other                                                     11.2            18.2
                                                                        ----------      ----------
       Total current assets                                                  298.0           347.3
                                                                        ----------      ----------
Property, plant and equipment, at cost                                     3,727.7         3,679.5
Accumulated depreciation                                                  (2,327.5)       (2,289.5)
                                                                        ----------      ----------
       Total property, plant and equipment, net                            1,400.2         1,390.0
                                                                        ----------      ----------
Prepaid pension costs                                                        207.8           176.7
Other assets                                                                   8.8             7.7
                                                                        ----------      ----------
Total assets                                                            $  1,914.8      $  1,921.7
                                                                        ==========      ==========
</TABLE>



The accompanying notes are an integral part of these statements.



                                       2
<PAGE>   4


                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY
         Condensed Consolidated Balance Sheets (Unaudited) - Continued

<TABLE>
<CAPTION>

                                                 March 31,    December 31,
                                                   2000           1999
                                                ----------     ----------
                                                  (Dollars in Millions)
<S>                                             <C>            <C>
LIABILITIES AND SHAREHOLDER'S EQUITY
Current liabilities
    Current maturities of long-term debt        $      1.6     $      1.6
    Note payable to affiliate                           --           53.6
    Accounts payable                                  61.8           67.0
    Affiliate payables                                33.6           35.4
    Taxes payable                                     78.4           57.3
    Dividends payable                                 66.0           64.0
    Other                                             94.4           78.5
                                                ----------     ----------
       Total current liabilities                     335.8          357.4
                                                ----------     ----------
Long-term debt                                       765.9          765.8
Deferred income taxes                                170.0          158.0
Employee benefit plans and other                      37.6           37.1
                                                ----------     ----------
       Total liabilities                           1,309.3        1,318.3
                                                ----------     ----------
Shareholder's equity
    Common stock (17,920,000 shares issued)          448.0          448.0
    Additional paid-in capital                        60.5           60.4
    Retained earnings                                 97.0           95.0
                                                ----------     ----------
       Total shareholder's equity                    605.5          603.4
                                                ----------     ----------
Total liabilities and shareholder's equity      $  1,914.8     $  1,921.7
                                                ==========     ==========
</TABLE>





The accompanying notes are an integral part of these statements.



                                       3
<PAGE>   5

                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY
          Condensed Consolidated Statements of Cash Flows (Unaudited)

<TABLE>
<CAPTION>

                                                                   Three Months Ended
                                                                        March 31,
                                                               --------------------------
                                                                  2000           1999
                                                               ----------      ----------
                                                                   (Dollars in Millions)
<S>                                                            <C>             <C>
OPERATIONS
    Net income                                                 $     68.0      $     54.5
    Adjustments to reconcile net income to net cash
      from operations:
         Depreciation and amortization                               56.8            54.3
         Employee retirement benefits                               (30.9)           (5.6)
         Provision for uncollectible accounts                         3.4             3.3
         Changes in current assets and current liabilities           88.7            29.8
         Deferred income taxes and other - net                       10.8             8.1
                                                               ----------      ----------
       Net cash from operations                                     196.8           144.4
                                                               ----------      ----------
INVESTING
    Capital expenditures                                            (68.0)          (63.0)
    Other - net                                                      (0.1)            1.5
                                                               ----------      ----------
       Net cash used in investing                                   (68.1)          (61.5)
                                                               ----------      ----------
FINANCING
    Long-term debt retired, including premiums paid
       on early retirement                                             --          (125.0)
    Dividends                                                       (64.0)          (20.0)
    Net change in affiliate notes                                   (66.0)           62.1
                                                               ----------      ----------
       Net cash used in financing                                  (130.0)          (82.9)
                                                               ----------      ----------
Decrease in cash and cash equivalents                                (1.3)             --
Cash and cash equivalents:
    Beginning of period                                               1.4             0.4
                                                               ----------      ----------
    End of period                                              $      0.1      $      0.4
                                                               ==========      ==========
</TABLE>




The accompanying notes are an integral part of these statements.


                                       4
<PAGE>   6


                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY
        Notes to Condensed Consolidated Financial Statements (Unaudited)

NOTE 1.  BASIS OF PRESENTATION

GTE Northwest Incorporated (the Company) is incorporated under the laws of the
State of Washington and is a subsidiary of GTE Corporation (GTE).

The accompanying unaudited condensed consolidated financial statements have
been prepared based upon Securities and Exchange Commission (SEC) rules that
permit reduced disclosure for interim periods. These condensed consolidated
financial statements reflect all adjustments that are necessary for a fair
presentation of results of operations and financial position for the interim
periods shown including normal recurring accruals. The results for the interim
periods are not necessarily indicative of results for the full year. For a more
complete discussion of significant accounting policies and certain other
information, please refer to the consolidated financial statements and the
notes thereto included in the Company's 1999 Annual Report on Form 10-K.

Reclassifications of prior year data have been made, where appropriate, to
conform to the 2000 presentation.

NOTE 2.  RECENT ACCOUNTING PRONOUNCEMENTS

In June 1998, the Financial Accounting Standards Board (FASB) issued Statement
of Financial Accounting Standards (SFAS) No. 133, "Accounting for Derivative
Instruments and Hedging Activities," which establishes accounting and reporting
standards for derivative instruments, including certain derivative instruments
embedded in other contracts, and for hedging activities. The statement requires
entities that use derivative instruments to measure these instruments at fair
value and record them as assets or liabilities on the balance sheet. It also
requires entities to reflect the gains or losses associated with changes in the
fair value of these derivatives, either in earnings or as a separate component
of comprehensive income, depending on the nature of the underlying contract or
transaction. The Company is currently assessing the impact of adopting SFAS No.
133, as amended, which is effective January 1, 2001.

In December 1999, the SEC issued Staff Accounting Bulletin (SAB) No. 101,
"Revenue Recognition in Financial Statements," which currently must be adopted
by June 30, 2000. SAB No. 101 provides additional guidance on revenue
recognition as well as criteria for when revenue is generally realized and
earned and also requires the deferral of incremental costs. The Company is
currently assessing the impact of SAB No. 101.

NOTE 3.  NET ASSETS HELD FOR SALE

During May 1999, the Company entered into an agreement to sell approximately
14,000 switched access lines located in California to Citizens Utilities
Company. This agreement consummates the Company's previously announced 1998 plan
to sell selected access lines located in California. The sale is subject to
regulatory approval and is expected to close in 2000. The associated net assets,
which approximate $16.3 million and $16.0 million at March 31, 2000 and December
31, 1999, respectively, consist of property, plant and equipment, and have been
classified as "Net assets held for sale" in the consolidated balance sheets. The
Company intends to continue to operate all of these assets until sold. Based on
the decision to sell, however, the Company stopped recording depreciation
expense for these assets. Accordingly, depreciation expense was lowered by $0.6
million for both the three months ended March 31, 2000 and 1999. No charges were
recorded for the access lines to be sold because their estimated fair values
were in excess of their carrying values. The access line agreement represents
approximately 1% of the switched access lines that the Company had in service at
the end of 1999, and contributed approximately 1% to 1999 consolidated revenues
and approximately 3% of 1999 consolidated operating income.



                                       5
<PAGE>   7



                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY
  Notes to Condensed Consolidated Financial Statements (Unaudited) - Continued

NOTE 4.  DIRECTORY PUBLISHING REVENUES

Consistent with industry practice, effective January 1, 2000, GTE changed its
method of recognizing directory publishing revenues. GTE Directories, a
wholly-owned subsidiary of GTE, publishes telephone directories for which it
receives advertising revenue. Under the previous method of revenue recognition,
approximately 60% of the advertising revenue for directories published in the
Company's operating areas was recognized as revenue by the Company. The
remaining 40% was recognized as revenue by GTE Directories. Under the new
method, GTE Directories now recognizes 100% of the directory publishing
revenues. The Company, in-turn, bills GTE Directories for customer listing
information and billing and collection services. As a result, the Company's
other services and sales revenues and operating income for the three months
ended March 31, 2000 decreased $4.5 million and $3.9 million, respectively,
compared to the first quarter of 1999.

NOTE 5.  PROPOSED MERGER WITH BELL ATLANTIC CORPORATION

Bell Atlantic and GTE have announced a proposed merger of equals under a
definitive merger agreement dated July 27, 1998. Under the terms of the
agreement, GTE shareholders will receive 1.22 shares of Bell Atlantic common
stock for each share of GTE common stock that they own. Bell Atlantic
shareholders will continue to own their existing shares after the merger.

The merger is expected to qualify as a pooling of interests, which means that
for accounting and financial reporting purposes the companies will be treated
as if they had always been combined. At annual meetings held in May 1999, the
shareholders of each company approved the merger. The completion of the merger
is subject to a number of conditions, including certain regulatory approvals
and receipt of opinions that the merger will be tax-free. All state regulatory
commissions have now approved the merger and the only remaining approval is
required from the Federal Communications Commission.





                                       6
<PAGE>   8

                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY

Item 2. Management's Discussion and Analysis of Results of Operations
              (Abbreviated pursuant to General Instruction H(2).)

RESULTS OF OPERATIONS

Net income increased $13.5 million or 25% for the three months ended March 31,
2000, compared to the same period in 1999, primarily due to higher local
services and network access services revenues, partially offset by a
corresponding increase in income taxes.

<TABLE>
<CAPTION>

REVENUES AND SALES
(Dollars in Millions)             Three Months Ended
                                       March 31,
                                -------------------------      Increase        Percent
                                   2000           1999        (Decrease)       Change
                                ----------     ----------     ----------      ---------
<S>                             <C>            <C>            <C>             <C>
Local services                  $    124.4     $    115.4     $      9.0           8%
Network access services              128.8          115.3           13.5          12%
Other services and sales              48.3           49.8           (1.5)         (3)%
                                ----------     ----------     ----------
   Total revenues and sales     $    301.5     $    280.5     $     21.0           7%
                                ==========     ==========     ==========
</TABLE>

Local Services Revenues

Local services revenues increased for the first quarter of 2000 compared to the
first quarter of 1999 primarily due to 5% growth in switched access lines,
which generated $5.5 million of additional revenues from basic local services,
Integrated Services Digital Network and Digital Channel Services. Revenues from
enhanced customer calling services, such as SmartCall(R) and CLASS services,
contributed an additional $1.6 million to the first quarter increase.

Network Access Services Revenues

Minutes of use increased 8%, generating additional network access services
revenues of $4.9 million for the first quarter of 2000 compared to the first
quarter of 1999. Special access revenues grew by $11.6 million as a result of
greater demand for increased bandwidth services by high-capacity users.
End-user surcharges increased $2.6 million primarily as a result of access line
growth and the implementation of the local number portability (LNP) surcharge.
Partially offsetting these increases is a decrease of $5.3 million reflecting
the impact of mandated interstate and intrastate access price changes.

Other Services and Sales Revenues

The impact of a change in the recognition of directory publishing revenues
resulted in a $4.5 million decrease in other services and sales revenues for
the first quarter of 2000 (for further information see "OTHER DEVELOPMENTS -
Directory Publishing Revenues"). Partially offsetting the decrease is an
increase in nonregulated service revenues and equipment sales of $2.0 million.


                                       7
<PAGE>   9


                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY

   Management's Discussion and Analysis of Results of Operations - Continued
              (Abbreviated pursuant to General Instruction H(2).)


<TABLE>
<CAPTION>

OPERATING COSTS AND EXPENSES
(Dollars in Millions)                         Three Months Ended
                                                   March 31,
                                          -------------------------      Increase        Percent
                                             2000           1999        (Decrease)       Change
                                          ----------     ----------     -----------      --------
<S>                                       <C>            <C>            <C>              <C>
Cost of services and sales                $     84.5     $     83.3     $      1.2            1%
Selling, general and administrative             38.9           42.7           (3.8)          (9)%
Depreciation and amortization                   56.8           54.3            2.5            5%
                                          ----------     ----------      ----------
   Total operating costs and expenses     $    180.2     $    180.3     $     (0.1)          --
                                          ==========     ==========      ==========
</TABLE>

The decrease in operating costs and expenses is primarily due to the
recognition of a pretax gain of $24.5 million associated with lump-sum
settlements of pension obligations for former employees electing deferred
vested pension cash-outs and for current employees who met certain eligibility
requirements. Partially offsetting the decrease was an increase in access
charges of $6.6 million, primarily resulting from increased competitive local
exchange carrier (CLEC) activity. Higher costs associated with customer and
access line growth, increased telecommunications equipment sales volumes, and
sales growth and support for new initiatives, further offset the decrease by
$16.2 million. The increase in depreciation and amortization expense is
associated with the investment in network facilities necessary to support
switched access line growth due to higher demand from both Internet Service
Providers (ISPs) and customers.


OTHER INCOME STATEMENT ITEMS

Income tax expense increased 25% or $7.9 million for the three months ended
March 31, 2000 compared to the same period in 1999, primarily due to a
corresponding increase in pretax income.

INTERSTATE REGULATORY DEVELOPMENTS


During the first quarter of 2000, regulatory and legislative activity at both
the state and federal levels continued to be a direct result of the
Telecommunications Act of 1996 (Telecommunications Act). Along with promoting
competition in all segments of the telecommunications industry, the
Telecommunications Act was intended to preserve and advance universal service.

GTE continued in 2000 to meet the wholesale requirements of new competitors.
GTE has continued to sign interconnection agreements with other carriers,
providing them the capability to purchase unbundled network elements (UNEs),
resell retail services and interconnect facilities-based networks.

Universal Service

In November 1999, the Federal Communications Commission (FCC) released an order
dealing with implementation of the new FCC federal high cost support mechanism
for non-rural incumbent local exchange carriers (ILECs), including GTE. The
effective date for the new federal universal service plan was January 1, 2000.
This plan will distribute federal high cost funds to states with higher than
average costs. The role of state commissions is to ensure reasonable
comparability within the borders of a state. Federal high cost support will be
calculated by comparing the nationwide average cost with each state's average
cost per line, and providing federal support for only states that exceed 135%
of the nationwide average. To guard against rate shock, the FCC also adopted a
"hold harmless" approach so that the amount of support provided to each
non-rural carrier under the new plan will not be less than the amount provided
today. U S WEST has appealed this order on the basis that it fails to provide a
sufficient amount of support. This FCC order also established a May 1, 2000
deadline by which state commissions must



                                       8
<PAGE>   10
                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY

   Management's Discussion and Analysis of Results of Operations - Continued
              (Abbreviated pursuant to General Instruction H(2).)


create at least three deaveraged price zones for UNEs. In January 2000, GTE
requested the FCC grant a one year delay to give state commissions ample
opportunity to implement deaveraged retail rates and establish state universal
service funds in concert with UNE deaveraging. However, on April 6, 2000, the
FCC denied GTE's request for an extension of time. The FCC expects state
commissions, rather than the individual telephone companies, to file a waiver
of the May 1, 2000 deadline, if necessary. On April 28, 2000, the FCC granted
temporary waivers to seven state commissions allowing them to delay compliance
up to six months. The remaining states that GTE operates in have already
adopted permanent deaveraged UNE rates.


OTHER DEVELOPMENTS

Proposed Merger with Bell Atlantic Corporation

Bell Atlantic and GTE have announced a proposed merger of equals under a
definitive merger agreement dated July 27, 1998. Under the terms of the
agreement, GTE shareholders will receive 1.22 shares of Bell Atlantic common
stock for each share of GTE common stock that they own. Bell Atlantic
shareholders will continue to own their existing shares after the merger.

The merger is expected to qualify as a pooling of interests, which means that
for accounting and financial reporting purposes the companies will be treated
as if they had always been combined. At annual meetings held in May 1999, the
shareholders of each company approved the merger. The completion of the merger
is subject to a number of conditions, including certain regulatory approvals
and receipt of opinions that the merger will be tax-free. All state regulatory
commissions have now approved the merger and the only remaining approval is
required from the FCC. Both companies are working diligently to complete the
merger and are targeting completion of the merger in the second quarter of
2000.

Net Assets Held for Sale

During May 1999, the Company entered into an agreement to sell approximately
14,000 switched access lines located in California to Citizens Utilities
Company. This agreement consummates the Company's previously announced 1998 plan
to sell selected access lines located in California. The sale is subject to
regulatory approval and is expected to close in 2000. The associated net assets,
which approximate $16.3 million and $16.0 million at March 31, 2000 and December
31, 1999, respectively, consist of property, plant and equipment, and have been
classified as "Net assets held for sale" in the consolidated balance sheets. The
Company intends to continue to operate all of these assets until sold. Based on
the decision to sell, however, the Company stopped recording depreciation
expense for these assets. Accordingly, depreciation expense was lowered by $0.6
million for both the three months ended March 31, 2000 and 1999. No charges were
recorded for the access lines to be sold because their estimated fair values
were in excess of their carrying values. The access line agreement represents
approximately 1% of the switched access lines that the Company had in service at
the end of 1999, and contributed approximately 1% to 1999 consolidated revenues
and approximately 3% of 1999 consolidated operating income.

Directory Publishing Revenues

Consistent with industry practice, effective January 1, 2000, GTE changed its
method of recognizing directory publishing revenues. GTE Directories, a
wholly-owned subsidiary of GTE, publishes telephone directories for which it
receives advertising revenue. Under the previous method of revenue recognition,
approximately 60% of the advertising revenue for directories published in the
Company's operating areas was recognized as revenue by the Company. The
remaining 40% was recognized as revenue by GTE Directories. Under the new
method, GTE Directories now recognizes 100% of the directory publishing
revenues. The Company, in-turn, bills GTE


                                       9
<PAGE>   11
                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY

   Management's Discussion and Analysis of Results of Operations - Continued
              (Abbreviated pursuant to General Instruction H(2).)



Directories for customer listing information and billing and collection
services. As a result, the Company's other services and sales revenues and
operating income for the three months ended March 31, 2000 decreased $4.5
million and $3.9 million, respectively, compared to the first quarter of 1999.
Other services and sales revenues and operating income for the year ended
December 31, 2000 are expected to decrease by approximately $48.1 million and
$43.5 million, respectively, compared to 1999.


RECENT ACCOUNTING PRONOUNCEMENTS

In June 1998, the Financial Accounting Standards Board (FASB) issued Statement
of Financial Accounting Standards (SFAS) No. 133, "Accounting for Derivative
Instruments and Hedging Activities," which establishes accounting and reporting
standards for derivative instruments, including certain derivative instruments
embedded in other contracts, and for hedging activities. The statement requires
entities that use derivative instruments to measure these instruments at fair
value and record them as assets or liabilities on the balance sheet. It also
requires entities to reflect the gains or losses associated with changes in the
fair value of these derivatives, either in earnings or as a separate component
of comprehensive income, depending on the nature of the underlying contract or
transaction. The Company is currently assessing the impact of adopting SFAS No.
133, as amended, which is effective January 1, 2001.

In December 1999, the Securities and Exchange Commission issued Staff
Accounting Bulletin (SAB) No. 101, "Revenue Recognition in Financial
Statements," which currently must be adopted by June 30, 2000. SAB No. 101
provides additional guidance on revenue recognition as well as criteria for
when revenue is generally realized and earned and also requires the deferral of
incremental costs. The Company is currently assessing the impact of SAB No.
101.


CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

In this Management's Discussion and Analysis, the Company has made
forward-looking statements. These statements are based on the Company's
estimates and assumptions and are subject to certain risks and uncertainties.
Forward-looking statements include the information concerning possible or
assumed future results of operations of the Company, as well as those
statements preceded or followed by the words "anticipates," "believes,"
"estimates," "expects," "hopes," "targets" or similar expressions. For each of
these statements, the Company claims the protection of the safe harbor for
forward-looking statements contained in the Private Securities Litigation
Reform Act of 1995.

The future results of the Company could be affected by subsequent events and
could differ materially from those expressed in the forward-looking statements.
If future events and actual performance differ from the Company's assumptions,
the actual results could vary significantly from the performance projected in
the forward-looking statements.

The following important factors could affect the future results of the Company
and could cause those results to differ materially from those expressed in the
forward-looking statements: (1) materially adverse changes in economic
conditions in the markets served by the Company; (2) material changes in
available technology; (3) the final resolution of federal, state and local
regulatory initiatives and proceedings, including arbitration proceedings, and
judicial review of those initiatives and proceedings, pertaining to, among
other matters, the terms of interconnection, access charges, universal service,
UNEs and resale rates; and (4) the extent, timing, success and overall effects
of competition from others in the local telephone and intraLATA toll service
markets.


                                      10
<PAGE>   12

PART II. OTHER INFORMATION

                   GTE NORTHWEST INCORPORATED AND SUBSIDIARY


Item 6.  Exhibits and Reports on Form 8-K.

     (a) Exhibits required by Item 601 of Regulation S-K.

         10  Material Contracts - Letter Agreement between GTE Service
             Corporation and John Appel

         12  Statement re: Calculation of the Consolidated Ratio of Earnings to
             Fixed Charges

         27  Financial Data Schedule

     (b) The Company filed no reports on Form 8-K during the first quarter of
         2000.








                                      11
<PAGE>   13






                                   SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.



                                                    GTE Northwest Incorporated
                                                -------------------------------
                                                        (Registrant)


  Date:           May 12, 2000                      /s/ Stephen L. Shore
          ------------------------------        -------------------------------
                                                       Stephen L. Shore
                                                          Controller
                                                 (Principal Accounting Officer)




                                      12
<PAGE>   14

                                 EXHIBIT INDEX
<TABLE>
<CAPTION>

Exhibit
Number                            Description
-------                           -----------
<S>              <C>
  10             Material Contracts - Letter Agreement between GTE Service
                 Corporation and John Appel

  12             Statement re: Calculation of the Consolidated Ratio of
                 Earnings to Fixed Charges

  27             Financial Data Schedule
</TABLE>