Exhibit 3.170

                 RESTATED AND AMENDED ARTICLES OF INCORPORATION

                                       OF

                      ASSOCIATED EMERGENCY PHYSICIANS, INC.
                      MEDICAL GROUP OF NORTHERN CALIFORNIA

      The undersigned certify that:

      1. They are the president and the secretary, respectively, of Associated
Emergency Physicians, Inc. Medical Group of Northern California.

      2. The articles of incorporation of this corporation are amended and
restated as follows:

                                   "ARTICLE I

      "The name of this corporation is AEP Management Services, Inc.

                                   "ARTICLE II

      "The purpose of the corporation is to engage in any lawful act or activity
for which a corporation may be organized under the General Corporation Law of
California other than the banking business, the trust company business, or the
practice of a profession permitted to be incorporated by the California
Corporations Code.

                                  "ARTICLE III

      "This corporation elects to be governed by all of the provisions of the
General Corporation Law of 1977 not otherwise applicable to it under Chapter 23
thereof.

                                   "ARTICLE IV

      "The corporation is authorized to issue one class of shares of no par
value capital stock, which class shall be designated as "common stock." The
total number of shares of common stock which the corporation shall have
authority to issue shall be seventy-five thousand (75,000) shares.



                                   "ARTICLE V

      "1. The liability of the directors of the corporation for monetary damages
shall be eliminated to the fullest extent permissible under California law.

      "2. The corporation is authorized to indemnify the officers and directors
of the corporation to the fullest extent permissible under California law.

                                   "ARTICLE VI

      "Any insurance this corporation is permitted by the California
Corporations Code to purchase and maintain on behalf of any of its agents
against any liability asserted against or incurred by such agents or arising
from their status as such may be purchased from any company regardless of
whether this corporation owns all or a portion of the shares of the company
issuing such insurance, provided that the policy is limited to the extent
required by the Corporations Code."

      3. The foregoing amendment and restatement of the articles of
incorporation has been approved by the board of directors.

      4. The foregoing amendment and restatement of the articles of
incorporation has been approved by the required vote of the shareholders, in
accordance with Section 902 of the California Corporations Code. The total
number of outstanding shares of the corporation is 1,066-2/3. The number of
shares voting in favor of the amendment equalled or exceeded the vote required.
The percentage required was more than 50%.

      We further declare under penalty of perjury under the laws of the state of
California that the matters set forth above are true and correct of our own
knowledge.

      Date: 9/24, 1996

                                                /s/Robert V. Violante
                                                -------------------------------
                                                Robert V. Violante, President

                                                /s/James B. Lane
                                                -------------------------------
                                                James B. Lane, Secretary

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                            CERTIFICATE OF AMENDMENT

                                       OF

                            ARTICLES OF INCORPORATION

      THE UNDERSIGNED, WILLIAM F. MILLER, III and Andrew G. Buck, certify that:

      1. They are the Vice President and Secretary, respectively, of AEP
Management Services, Inc., a California corporation (the "Corporation").

      2. Article I of the Restated and Amended Articles of Incorporation of this
Corporation is amended and restated to read in its entirety as follows:

                                   "ARTICLE I

      The name of the corporation is EmCare of California, Inc."

      3. The foregoing amendment of the Restated and Amended Articles of
Incorporation has been duly approved by the Board of Directors.

      4. The foregoing amendment of the Articles of Incorporation has been duly
approved by the required vote of shareholders in accordance with Section 902 of
the California Corporations Code. The total number of outstanding shares of the
Corporation entitled to vote thereon is 1,000. The number of shares voting in
favor of the amendment equaled or exceeded the vote required. The percentage
vote required was greater than 50%.

      We further declare under penalty of perjury under the laws of the State of
California that the matters set forth in this Certificate are true and correct
of our own knowledge.

DATED: 5/5, 1998

                                                /s/William F. Miller, III
                                                ------------------------------
                                                William F. Miller, II
                                                Vice President

/s/Andrew G. Buck
------------------------------
Andrew G. Buck, Secretary

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