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                                                                   Exhibit 3.150


                                    BYLAWS OF

                  NORTHWEST HOSPITAL MEDICINE PHYSICIANS, INC.

                                   ARTICLE I.

                            Meetings of Shareholders

      Section 1. Annual Meeting. The annual meeting of the Shareholders shall be
held at such time and place, either within or without the State of Washington,
as may be designated from time to time by the Directors.

      Section 2. Special Meetings. Special meetings of the Shareholders may be
called by the President, by a majority of the Board of Directors or by the
holders of not less than ten percent (10%) of all of the shares entitled to vote
at such meeting, the time and place of any such meeting to be designated by the
Directors. In the event any such special meetings shall be called by the
Shareholders, as is hereinbefore provided, such Shareholders shall sign, date
and deliver to the corporation's Secretary one (1) or more written demands for
the meeting, describing the purpose or purposes for which it is to be held.

      Section 3. Notice of Shareholder Meetings. Written notice stating the
date, time and place of any meeting of the Shareholders and, in the case of a
special meeting, the purpose or purposes for which the meeting is called, shall
be delivered either personally or by mail or at the direction of the President,
Secretary or other officer or person calling the meeting to each Shareholder
entitled to vote at the meeting. Such notice shall be delivered not less than
ten (10) days nor more than two (2) months before the date of the meeting and
shall be deemed to be delivered when deposited in the United States Mail,
postage prepaid, and correctly addressed (if mailed) or upon actual receipt (if
hand-delivered). The person giving such notice shall certify to the corporation
that the notice required by this paragraph has been given.
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      Section 4. Quorum Requirements. A majority of the shares entitled to vote
shall constitute a quorum for the transaction of business. Once a share is
represented for any purpose at a meeting, it shall be deemed present for quorum
purposes for the remainder of the meeting and for any adjournment of that
meeting, unless a new record date is or must be set for that adjourned meeting.

      Section 5. Voting and Proxies. If a quorum exists, action on any matter by
a voting group shall be approved if the votes cast within the voting group
favoring the action exceed the votes cast opposing the action. A Shareholder may
vote either in person or by written proxy, any such proxy to be effective when
received by the Secretary or other person authorized to tabulate votes. No proxy
shall be valid after the expiration of eleven (11) months from and after the
date of its execution, unless it is otherwise expressly provided in the proxy.

                                   ARTICLE II.

                               Board of Directors

      Section 1. Qualification and Election. Directors shall be natural persons,
but need not be Shareholders of the corporation or residents of the State of
Washington. They shall be elected by a plurality of the votes case at a meeting
of the Shareholders at which a quorum is present. Each Director shall hold
office until the expiration of the term for which the Director is elected and
thereafter, until a successor has been elected and qualified, unless removed
from office as is hereinafter provided.

      Section 2. The number of Directors shall be fixed from time to time by
either the Shareholders or the Board of Directors.


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      Section 3. Meetings. The Board of Directors may hold such regular and
special meetings as it from time to time decides, which meetings may be either
in person or by conference telephone call. Special meetings may be called at any
time by the Chairman of the Board, President or any two (2) Directors.

      Section 4. Notices of Directors Section Meetings. All regular meetings of
the Directors may be held without notice. Special meetings shall be preceded by
at least two (2) days notice of the date, time and place of the meeting. Notice
of an adjourned meeting need not be given if the time and place to which the
meeting is adjourned affixed at the meeting at which the adjournment is taken
and if the period of adjournment does not exceed one (1) month in any one
adjournment.

      Section 5. Quorum and Vote. The presence of a majority of the Directors
shall constitute a quorum for the transaction of business. The vote of a
majority of the Directors present at any meeting at which a quorum is present
shall be the act of the Board.

      Section 6. Board Committees. The Board of Directors, by resolution adopted
by a majority of its members, may create one or more committees, consisting of
one or more Directors, and may delegate to such committee or committees any and
all such authority as is permitted by law.

                                  ARTICLE III.

                                    Officers

      Section 1. Number. The corporation shall have a President and a Secretary
and such other officers as the Board of Directors shall from time to time deem
necessary or desirable. Any two or more offices may be held by the same person,
except the offices of President and Secretary.

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      Section 2. Election and Term. The officers shall be elected by the Board
of Directors and each officer shall serve at the pleasure of the Board until
such officer's resignation or removal.

      Section 3. Duties. All officers shall have such authority and perform such
duties in the management of the corporation as are normally incident to their
offices and as the Board of Directors may from time to time provide.


                                   ARTICLE IV.

                    Indemnification of Directors and Officers

      Section 1. Any person who is or was a Director or officer of this
Corporation, or of any other corporation which he serves or served in such
capacity at the request of this Corporation, because of this corporation's
interest, direct or indirect, as owner of shares of capital stock or as a
creditor, may, in accordance with Section 2 below, be indemnified by this
Corporation against any and all liability and reasonable expense (including, but
not by way of limitation, counsel fees and disbursements and amounts paid in
settlement or in satisfaction of judgments or as fines or penalties) paid or
incurred by him in connection with or resulting from any claim, action, suit or
proceeding (whether brought by or in the right of this Corporation or of such
other corporation or otherwise), civil, criminal, administrative or
investigative, including any appeal relating thereto, in which he may be
involved, or threatened to be involved, as a party or otherwise, by reason of
his being or having been a Director or officer of this Corporation or of such
other corporation, or by reason of any action taken or not taken in the course
and scope of his employment as such officer or in his capacity as such Director,
provided: (i) in the case of a claim, action, suit or proceeding brought by or
in the right of this Corporation to procure a judgment in its favor, that such
person has not been adjudged to


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be liable for negligence or misconduct in the performance of his duty to this
Corporation, and (ii) in the case of a claim, action, suit or proceeding brought
other than by or in the right of this Corporation to procure judgment in its
favor, that such person acted in good faith for the purpose which he reasonably
believed to be in the best interest of the Corporation. In any criminal action
or proceeding, such person shall be deemed not to have met the standards set
forth in clause (ii) of the foregoing sentence if he had reasonable cause to
believe that his conduct was unlawful or improper. Determination of any claim,
action, suit or proceeding, civil, criminal, administrative or investigative, by
judgment, order, settlement (whether with or without court approval, conviction
or upon a plea of guilty or of nolo contendere or its equivalent), shall not
itself create a presumption that a Director or officer did not meet the
standards of conduct set forth in this paragraph.

      Section 2. Any person referred to in Section 1 of this Bylaw who has been
wholly successful on the merits with respect to any claim, action, suit or
proceeding of the character described in Section 1 shall be entitled to and
shall be granted indemnification as of right, except to the extent that he has
otherwise been indemnified. Except as is provided in the preceding sentence, the
grant of indemnification under this Bylaw, unless awarded by a court, shall be
at the discretion of the Board, but may be granted only (i) if the Board, acting
by a quorum consisting of Directors not parties to such claim, action, suit or
proceeding, shall have determined that, in its opinion, the Director or officer
has met the applicable standards of conduct set forth in Section 1, or (ii)
alternatively, if the Board shall have received the written advice of
independent legal counsel that in the latter's judgment, such applicable
standards of conduct have been met. If several claims, issues, matters or
actions are involved, any person referred to in Section 1 of this Bylaw may be
indemnified by the Board to the extent of that portion of the liability and
expenses described in Section 1 above


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which are applicable to the claims, issues and matters of action in respect of
which such person has met the applicable standards of conduct set forth in said
Section 1. Any rights of indemnification provided in this Bylaw shall not
include any amount paid to this Corporation pursuant to any settlement of or any
judgment rendered in or resulting from any claim, action, suit or proceeding
brought by or in the right of this Corporation to procure a judgment in its
favor, unless the amount so paid is fully covered by insurance payable to this
Corporation and/or to the party to be indemnified.

      Section 3. Expenses incurred with respect to any claim, action, suit or
proceeding of the character described in Section 1 of this Bylaw may be advanced
by the Corporation prior to the final disposition thereof, upon receipt of an
undertaking by or on behalf of the Director or officer to repay such amount,
unless it shall ultimately be determined that he or she is entitled to and is
granted indemnification under this Bylaw.

      Section 4. The rights of indemnification provided in this Bylaw shall be
in addition to any other rights to which any such Director or officer may
otherwise be entitled by contract or otherwise, and in the event of such
person Sections death, such rights shall extend to his heirs and legal
representatives. The foregoing rights shall be available whether or not such
person continues to be a Director or officer at the time of incurring or
becoming subject to such liability and expenses, and whether or not the claim
asserted against him or her is based on matters which antedate the adoption of
this Bylaw.

      Section 5. If any word, clause or provision of this Bylaw or any award
made hereunder shall for any reason be determined to be invalid, the provisions
hereof shall not otherwise be affected thereby, but shall remain in full force
and effect. It is the intent of this Article IV that


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officers and directors of the corporation be indemnified by the Corporation to
the full extent permitted by law, and this Article should be construed in
accordance with that intent.


                                   ARTICLE V.

                      Resignations, Removals and Vacancies

      Section 1. Resignations. Any officer or Director may resign at any time by
giving notice to the Chairman of the Board, the President or the Secretary. Any
such resignation shall take effect at the time specified therein, or if no time
is specified, then upon its delivery.

      Section 2. Removal of Officers. Any officer may be removed by the Board at
any time, with or without cause.

      Section 3. Removal of Directors. Any or all of the Directors may be
removed at any time by majority vote of the Shareholders, with or without cause.

      Section 4. Vacancies. Newly created directorships, resulting from an
increase in the number of Directors and/or vacancies occurring in any office or
directorship for any reason, including removal of an officer or Director, may be
filled by the vote of a majority of the Directors then in office, even if less
than a quorum exists.

                                   ARTICLE VI.

                                Action by Consent

      Whenever the Shareholders or Directors are required or permitted to take
any action by vote, such action may be taken without a meeting on written
consent, setting forth the action so taken, signed by all the persons or
entities entitled to vote thereon. The affirmative vote of the number of
Shareholders or Directors that would be necessary to take such action at a
meeting shall be the act of the Shareholders or Directors, as the case may be.


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                                  ARTICLE VII.

                                  Capital Stock

      Section 1. Stock Certificates. Every Shareholder shall be entitled to a
certificate or certificates of capital stock of the corporation in such form as
may be prescribed by the Board of Directors. Unless otherwise decided by the
Board, such certificates shall be signed by the President and Secretary of the
corporation.

      Section 2. Transfer of Shares. Shares of stock may be transferred on the
books of the corporation by delivery and surrender of the properly assigned
certificate, but subject to any restrictions on transfer imposed by either the
applicable securities laws or any Shareholder Agreement.

      Section 3. Loss of Certificates. In the case of the loss, mutilation or
destruction of a certificate of stock, a duplicate certificate may be issued
upon such terms and conditions as the Board of Directors shall prescribe.

                                  ARTICLE VIII.

                               Amendment of Bylaws

      These Bylaws may be amended, added to or repealed, either by the
Shareholders or by the Board of Directors, as provided by statute. Any change in
the Bylaws made by the Board of Directors, however, may be amended or repealed
by the Shareholders.

                                  ARTICLE IX.

                           Construction of Provisions

      If any provision of these Bylaws shall be found to be contrary to or in
conflict with any provision of the Washington Business Corporation Act or
contrary to or in conflict with any


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other proper and applicable law, rule, regulation or ordinance, federal, state
or local, then and in that event, any such provision hereof shall be so
construed as to be in compliance with such provision of the said Washington
Business Corporation Act or with such other law, rule, regulation or ordinance,
adhering as closely as possible to the intent of said provision as originally
herein set forth.

                                  CERTIFICATION

      I, the undersigned, do hereby certify that the foregoing Bylaws for the
corporation were duly adopted as of the 1st day of January, 2005.

                                                --------------------------------
                                                Assistant Secretary


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