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The Clerk-Recorder’s Office online appointment booking tool will be unavailable from April 25, 2025 (Friday) at 6:00 PM through April 26, 2025 (Saturday) at 5:00 PM.


New appointment bookings, existing appointment changes, or cancellations will not be available during this maintenance window. 

Authenticate a County Medical Officer signature

Authentication of a County Medical Health Officer signature service is done in person or by mail.

In person

Submit the following:

  • Document(s) with the signature of the Santa Clara County Medical Health Officer.
  • Fee

By mail

Mail the following:

  • Mailing Address:

    Santa Clara County Clerk-Recorder's Office
    ATTN: Business Division
    110 West Tasman Drive, 1st Floor
    San Jose, CA 951​34

  • Document(s) with the signature of the Santa Clara County Medical Health Officer
  • Fee
  • Provide a self-addressed stamped envelope