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Pfizer boosters available at Event Center

cars driving into vaccination clinic in Event Center pavilion

Staff at the Event Center booster clinic will get you through the process quickly and efficiently. You can make an appointment via MyTurn, or you can drive up without an appointment. The Event Center is open on Tuesdays (noon-7pm) and Wednesdays through Saturdays (9am-4pm).

Contact the Public Authority


Contact the Public Authority

Due to the COVID-19 pandemic, the Public Authority currently does not conduct in-person business.  Public Authority services are available via email and telephone.




In-Home Supportive Services (IHSS) Provider Help Desk: For questions about electronic timesheets, paper timesheets, paycheck, direct deposit, liens and wage garnishments call (866) 376-7066

Provider Enrollment and Payroll Assistance Line: (844) 228-9632

Verification of Employment: Kelly Chan (650) 670-2225 or email:

Duplicate W-2 Requests: Contact your Payroll Specialist

Overtime & Violations Help Line: For questions about overtime, violation notices you received and avoiding violations call (650) 556-4388


Public Transportation Reimbursement: Kathaline Pivaral (650) 670-0953 or email:

Job Development Reimbursement: Stacy Goldsby (650) 241-5874 or email:

Applications for health, dental and vision coverage: Leonard Toy (650) 556-4388 or email:

Information for providers already enrolled in health, dental and vision insurance benefits:

  • Healthworx (Health): 1-800-750-4776
  • Benefits Customer Service Center (Dental & Vision): 1-800-842-6635

Worker’s Comp

For information on filing claims for injuries incurred while performing an IHSS task call: Jaime Alcaraz at (650) 381-4687 or Jansen Sajise at (650) 385-9849.

Union – SEIU

IHSS providers in San Mateo County are represented by SEIU 2015.  For Union and membership information please call or visit online the SEIU 2015 Member Action Center.

SEIU Member Action Center (MAC): 1-855-810-2015 or: 
SEIU Online Member Action Center (MAC)

Who to Call (Flyer)

Who To Call





Location & Hours

Aging and Adult Services Office Location: (mail drop-box only)
225 37th Avenue, San Mateo, CA 94403

Public Authority Mailing Address:
P.O. Box 5892, San Mateo, CA 94402

Hours: Monday-Friday, 8am-5pm (currently no in-person business)


Brenda Corzantes: Payroll Specialist (650) 670-0929 or email:

Kelly Chan: Payroll Specialist (650) 670-2225 or email:

Kelly Lou: Payroll Specialist (650) 670-2160 or email:

Kathaline Pivaral: Payroll Specialist (650) 670-0953 or email:

Leonard Toy: Payroll Specialist (650) 556-4388 or email:

Estella Castillo: Payroll Supervisor (650) 670-0937 or email:


Maria Esparza-Diaz: Registry provider recruitment and updates  (650) 713-8461 or email:

Reina Chen: Registry Social Worker (650) 713-8453 or email:

Judy Lau: Registry Social Worker (650) 713-8157 or email:

Martha Ochoa: Registry Social Worker (650) 713-8223 or email

Amanda Perez: Registry Social Worker (650) 454-4317 or email:

Betty Fung: Registry Supervisor (650) 241-5409 or email:

Training Workshops

Stacy Goldsby: Training Community Program Specialist (650) 241-5874 or email:


Araselis Marte Office Specialist 650-454-4317 or email: