EXHIBIT 3.125

                          CERTIFICATE OF INCORPORATION

                                       OF

                             TSI STATEN ISLAND, INC.

                UNDER SECTION 402 OF THE BUSINESS CORPORATION LAW

                  The undersigned, a natural person over the age of eighteen
years, for the purpose of forming a corporation pursuant to the provisions of
the Business Corporation Law of the State of New York, does hereby certify that:

                  FIRST: The name of the corporation is TSI Staten Island, Inc.

                  SECOND: The nature of the business to be conducted and the
purposes for which the corporation is formed are to engage in any lawful act or
activity for which corporations may be organized under the Business Corporation
Law of the State of New York; provided, however, that the corporation is not
formed to engage in any act or activity requiring the consent or approval of any
state official, department, board, agency or other body without such consent or
approval first being obtained.

                  THIRD: The office of the corporation in the State of New York
is to be located in the County of New York.

                  FOURTH: The aggregate number of shares of stock which the
corporation shall have authority to issue is Two Hundred Thousand (200,000)
shares of common stock, par value $0.10 per share.

                  FIFTH: The Secretary of State of the State of New York is
designated as the agent of the corporation upon whom process against the
corporation may be served. The post



office address to which the Secretary of State shall mail a copy of any process
against the corporation served upon him is:

                                TSI Staten Island, Inc.
                                c/o Becker, Glynn, Melamed & Muffly LLP
                                299 Park Avenue
                                New York, New York 10171
                                Attn: Richard N. Chassin, Esq.

                  SIXTH: The corporation shall be authorized to indemnify any
and all of its directors, officers, employees and agents, and any other person
or persons, to the fullest extent permitted under the Business Corporation Law
of the State of New York.

                  SEVENTH: A director of the corporation shall not be liable to
the corporation, or to any of its shareholders, for damages for any breach of
duty in such capacity arising from an act or omission, unless such act or
omission (i) was in bad faith, (ii) involved intentional misconduct or a knowing
violation of law, (iii) resulted in a financial profit or other advantage to
which such director was not legally entitled and which he personally gained in
fact, or (iv) violated Section 719 of the Business Corporation Law of the State
of New York.

                  EIGHTH: The by-laws of the corporation may be amended at any
meeting of shareholders by vote of the shareholders holding a majority of all of
the outstanding stock entitled to vote, present either in person or by proxy,
provided notice of the amendment is included in the notice or waiver of notice
of such meeting. The board of directors of the corporation may from time to time
by the vote of a majority of the directors then in office make, adopt, amend,
supplement or repeal by-laws (including by-laws adopted by the shareholders of
the corporation), but the shareholders of the corporation may from time to time
specify provisions of the by-laws that may not be amended or repealed by the
board of directors of the corporation.

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                  IN WITNESS WHEREOF, the undersigned has executed and
acknowledged this Certificate of Incorporation this 26th day of May, 1998.

                                        /s/ Jane F. Zaletofsky
                                        ---------------------------------------
                                                 Jane F. Zaletofsky
                                          Becker, Glynn, Melamed & Muffly LLP
                                                   299 Park Avenue
                                               New York, New York 10171

COUNTY OF NEW YORK   )
                     :   ss.:
STATE OF NEW YORK    )

                  On this 26th day of May, 1998 before me personally came Jane
F. Zaletofsky, to me known to be the person described in and who executed the
foregoing Certificate of Incorporation, and acknowledged to me that she executed
the same.

                                        /s/ Jeanine L. Heinz
                                        ------------------------------------
                                                    Notary Public

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