Document:

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                                                                   EXHIBIT 10.59

                            AMENDMENT NO. 1 TO LEASE

         THIS AMENDMENT NO. 1 TO LEASE, entered into this 31st day of March,
1996, by and between 3401 ASSOCIATES, L.P., as Lessor, and UNIPHY HEALTHCARE,
INC., as Lessee.

                              W I T N E S S E T H:

         WHEREAS, Lessor and Lessee entered into a Lease Agreement (the
"Lease"), dated ___________________, 1996, for a total of 2,190 square feet of
rentable floor area known as Suite 380 (the "Premises") in the 3401 West End
Office Building (the "Building"); and

         WHEREAS, Lessor and Lessee desire to enter into this Amendment No. 1 to
Lease for the purposes of amending the Lease.

         NOW, THEREFORE, in consideration of the premises and the rent as
stipulated and of the mutual covenants, it is agreed and understood between the
parties hereto that said Lease shall be amended as follows:

         1.    Notwithstanding the provisions of Section 34 of the Lease or any
               other provision of the Lease, Lessee shall have the right to
               assign or sublease the Premises to the Guarantor without the
               consent of the Lessor. Upon such assignment to the Guarantor, the
               Lessee shall notify the Lessor of such assignment but such
               notification shall not give Lessor the rights set forth in
               Section 34 of the Lease. Assignment by the Lessee to the
               Guarantor shall relieve Lessee of any obligation under the Lease.

         2.    Capitalized terms not defined herein shall have the same meaning
               ascribed to such terms in the Lease. The Lease, except as herein
               amended, shall remain in full force and effect and otherwise
               unchanged.

LESSOR:                                     LESSEE:

3401 ASSOCIATES, L.P., ACTING BY            UNIPHY HEALTHCARE, INC.
AND THROUGH EAKIN & SMITH, INC. ITS
PROPERTY MANAGER

By:                                         By:
       ----------------------------                -----------------------------

Title:                                      Title:
       ----------------------------                -----------------------------

Date:                                       Date:
       ----------------------------                -----------------------------<PAGE>

                                                                   EXHIBIT 10.60

                            AMENDMENT NO. 2 TO LEASE

         THIS AMENDMENT NO. 2 TO LEASE, entered into this 13th day of August,
1996, by and between HIGHWOODS/FORSYTH LIMITED PARTNERSHIP (Successor-in-
interest to 3401 Associates, L.P.), as Lessor, and UNIPHY HEALTHCARE, INC.,
as Lessee.

                              W I T N E S S E T H:

                  WHEREAS, Lessor and Lessee entered into a Lease Agreement
dated March 31, 1996 as amended on March 31, 1996 by that Amendment No. 1 to
Lease (all hereinafter referred to as the "Lease"), providing for the demise by
Lessor to Lessee of office space in a certain office building now commonly known
and designated as 3401 West End, Nashville, Tennessee (the "Building") all as
more specifically set forth in the Lease; and

                  WHEREAS, said office space currently consists of 2,190
rentable square feet (Suite 380) on the third floor of the East wing of the
Building ("Premises"); and

                  WHEREAS, the term of the Lease is to expire on July 31,
1999; and

                  WHEREAS, Lessor and Lessee desire to lease additional space in
the building consisting of 3,678 rentable square feet (the "Expansion Space") as
denoted in Exhibit A-2 effective October 1, 1996 for a term of the 36 months to
expire on September 30, 1999.

                  NOW, THEREFORE, in consideration of mutual covenants and
undertakings hereinafter set forth by and between the parties hereto, the Lease
is hereby amended as follows:

         1.   The total square footage of the Premises pursuant to this
              Amendment No. 2 to Lease will increase to 5,868 rsf effective
              October 1, 1996.

         2.   Effective July 31, 1999, the leasing of 2,190 square feet (Suite
              380) will terminate and the total square footage of the Premises
              pursuant to this Amendment No. 2 to Lease will decrease to 3,678
              square feet effective August 1, 1999 and through September 30,
              1999, the remainder of the term.

         3.   Lessor shall deliver the Expansion Space to Lessee in "as-is"
              condition on October 1, 1996.

         4.   "Base Rental" payments for the remainder of the term will be:

              Suite 380 (2,190 rsf)
              8/1/96 - 7131/99                  $19.50/rsf        $3,558.75/mo.

              Suite 665W (3,678 rsf)
              10/1,'96 - 9/30/97                $18.00/rsf        $5,517.00/mo.
              10/1/97 - 9/30/98                 $18.50/rsf        $5,670.25/mo.
              10/1/98 - 9/30/99                 $19.00/rsf        $5,823.50/mo.

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              Total Base Rent
              8/1/96 - 9/30/96                  $3,558.75/mo.
              10/1/96 - 9/30/97                 $9,075.75/mo.
              10/1/97 - 9/30/98                 $9,229.00/mo.
              10/1/98 - 7/31/99                 $9,382.25/mo.
              8/1/99 - 9/30/99                  $5,823.50/mo.

         5.   The Base Year as referred to in Paragraph 5(c) of the Lease will
              remain calendar year 1996.

         6.   Parking rights as referred to in Paragraph 10 of the Lease
              will be for a total of seven (7) spaces from August 1, 1996 to
              September 30, 1996, eighteen (18) spaces from October 1, 1996
              to July 31, 1999, and eleven (11) spaces from August 1, 1999
              to September 30, 1999 at the rate of $10.00 per space per
              month (the "Basic Parking Charge").

         7.   This Amendment No. 2 To Lease shall be incorporated into and made
              a part of the Lease and all provisions of the Lease not expressly
              modified or amended shall remain in full force and effect.

                  IN WITNESS WHEREOF, the parties hereto have executed this
Amendment No. 2 To Lease by proper person thereunto authorized to do so on the
day and year first written above.

LESSOR:                                   LESSEE:

HIGHWOODS/FORSYTH LIMITED                 UNIPHY HEALTHCARE, INC.
PARTNERSHIP
BY: HIGHWOODS PROPERTIES, INC.

By:                                       By:    /s/ Kenneth C. Mitchell
    --------------------------                   -------------------------------

                                          Title: Vice President
                                                 -------------------------------

                                          GUARANTOR:

                                          RHCMS, INC.

                                          By:    /s/ Randall Soltman
                                                 -------------------------------

                                          Title: Senior Vice President
                                                 -------------------------------

                                       2

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                                   EXHIBIT A-2

                           SIXTH FLOOR EXPANSION SPACE

                                       3<PAGE>

                                                                   EXHIBIT 10.61

                            AMENDMENT NO. 3 TO LEASE

         THIS AMENDMENT NO. 3 TO LEASE, entered into this 9th day of May, 1997
by and between HIGHWOODS/FORSYTH LIMITED PARTNERSHIP (Successor-in-interest to
3401 Associates, L.P.), as Lessor, and UNIPHY HEALTHCARE, INC., as Lessee.

                              W I T N E S S E T H:

                  WHEREAS, Lessor and Lessee entered into a Lease Agreement
dated March 31, 1996 as amended on March 31, 1996 by that Amendment No. 1 to
Lease, and subsequently amended on August 13, 1996 by that Amendment No 2, (all
hereinafter referred to as the "Lease"), providing for the demise by Lessor to
Lessee of office space in a certain office building now commonly known and
designated as 3401 West End, Nashville, Tennessee (the "Building") all as more
specifically set forth in the Lease; and

                  WHEREAS, said office space currently consists of 2,190
rentable square feet (Suite 380) on the third floor of the West wing of the
Building (the "Original Space") and 3,678 rentable square feet (Suite 665) on
the sixth floor of the West wing of the Building (the "Expansion Space"); and

                  WHEREAS, the term of the "Original Space" is to expire on July
31, 1999 and the term of the "Expansion Space" is to expire on September 30,
1999; and

                  WHEREAS, Lessor and Lessee desire to lease additional space in
the building consisting of 5,281 rentable square feet (Suite 760) on the seventh
floor of the West wing of the building (the "Second Expansion Space") as denoted
in Exhibit A-3 effective September 1, 1997 for a term of the 35 months to expire
on July 31, 2000; and

                  WHEREAS, Lessor and Lessee desire to terminate Suite 665
consisting of 3,678 rentable square feet on the sixth floor of the west wing of
the Building ("Termination Space") as denoted in Exhibit B-3 effective August
31, 1997 prior to its natural expiration of September 30, 1999.

                  NOW, THEREFORE, in consideration of mutual covenants and
undertakings hereinafter set forth by and between the parties hereto, the Lease
is hereby amended as follows:

         1.   The total square footage of the Premises pursuant to this
              Amendment No. 3 to Lease will increase to 11,149 rsf effective
              September 1, 1997, or such date on which the existing tenant
              vacates the Second Expansion Space.

         2.   Effective September 15, 1997 or an earlier date on which Suite 760
              is occupied by the Lessee, the leasing of 3,678 rentable square
              feet (Suite 665W) will terminate and the total square footage of
              the Premises pursuant to this Amendment No. 3 to Lease will
              decrease to 7471 rentable square feet.

         3.   Effective July 31, 1999, the leasing of 2,190 square feet (Suite
              380) will terminate and the total square footage of the Premises
              pursuant to this

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              Amendment No. 3 to Lease will decrease to 5,281 square feet
              effective August 1, 1999 through July 31, 2000, the remainder of
              the term.

         4.   Lessor shall deliver the Second Expansion Space to Lessee in
              "as-is" condition on September 1, 1997, or such date on which the
              existing tenant vacates the Second Expansion Space.

         5.   "Base Rental" payments for the remainder of the term will be:

               Suite 380 (2,190 rsf)
               8/1/96 - 7/31/99                $19.50/rsf       $3,558.75/mo.

               Suite 665W (3.678 rsf)
               10/1/96 - 9/15/97*              $18.00/rsf       $5,517.00/mo.
               * Or an earlier date on which Lessee occupies Suite 760W.

               Suite 760W (5.281 rsf)
               9/1/97* - 7/31/98               $18.50/rsf       $8,141.54/mo.
               8/1/98 - 7/31/99                $19.06/rsf       $8,387.99/mo.
               8/1/99 - 7/31/00                $19.63/rsf       $8.637.36/mo.
               *Or such date on which the existing tenant vacates the Second
                Expansion Space.

         6.   Lessee herein warrants and represents that once the existing
              tenant in Suite 760W vacates, Lessee will then vacate Suite 665W
              in less than 30 days. If Lessee does not vacate Suite 665W in the
              stipulated 30 day period, Suite 665W will be subject to Article 22
              "Holding Over" of this lease.

         7.   The Base Year as referred to in Paragraph 5(c) of the Lease will
              remain calendar year 1996.

         8.   Parking rights as referred to in Paragraph 10 of the Lease will be
              for a total of fifteen (15) spaces from October 1, 1996 to August
              31, 1997, nineteen (19) spaces from September l, 1997* to July 31,
              1999, and fourteen (14) spaces from August 1, 1999 to July 31,
              2000.

              *Or such date on which the existing tenant vacates the Second
               Expansion Space.

         9.   Definitions: The terms used in this Amendment No. 3, unless
              otherwise defined herein, shall have the same definitions set
              forth in the Lease.

         10.  This Amendment No. 3 To Lease shall be incorporated into and made
              a part of the Lease and all provisions of the Lease not expressly
              modified or amended shall remain in full force and effect.

                  IN WITNESS WHEREOF, the parties hereto have executed this
Amendment No. 3 To Lease by proper person thereunto authorized to do so on the
day and year first written above.

                                       2
<PAGE>

LESSOR:                                     LESSEE:

HIGHWOODS/FORSYTH LIMITED PARTNERSHIP       UNIPHY HEALTHCARE, INC.
BY AND THROUGH ITS GENERAL PARTNER
HIGHWOODS PROPERTIES, INC.

By:                                         By:
    ---------------------------------              -----------------------------

                                            Title:
                                                   -----------------------------

                                       3

<PAGE>

                                   EXHIBIT A-3

                          SEVENTH FLOOR EXPANSION SPACE

                                       4

<PAGE>

                                   EXHIBIT B-3

                        SHADED 6TH FLOOR EXPANSION SPACE

                                       5

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