Turning 65

As a standard condition of your retirement, the County of San Mateo requires that you or your eligible dependents enroll in Medicare Part A and Part B when you turn 65.

  • 3 MONTHS BEFORE YOUR 65th BIRTHDAY - Visit your local Social Security office and enroll in Medicare Part A and Part B
  • Upon Receipt of your Medicare Card: Mail the completed Retiree Change Form application with a copy of your new Medicare Card to the Benefits Division.

Please note: The Social Security award letter will not be accepted as proof of enrollment and the Medicare card must accompany your completed application.


Medical Plans for Retirees 65 and Over


UnitedHealthcare Medicare Advantage PPO

This plan gives you the flexibility to see any licensed provider or hospital nationwide. 

  • Your cost is the same for any provider in or out of network, as long as they accept Medicare and your UnitedHealthcare plan. 
  • You have the option to choose a Primary Care Provider (PCP), but it is not required. 
  • No referrals are needed. 
  • This plan also includes Medicare Part D prescription coverage. 
  • Most services and medications are covered with a small co-payment.

    You can log in to the UnitedHealth Medicare website to check if your doctor is participating and learn other important information about this plan.https://retiree.uhc.com

    **Please Note: USE GROUP #15481 WHEN LOOKING UP PPO PLAN GUIDES and DRUG FORMULARY**

Kaiser Permanente Senior Advantage

  • Patients seek medical care within the plan’s own facilities.
  • Most services and medicines are covered with a small co-payment.
  • You select your doctor, or Primary Care Provider (PCP), from the staff at a local Kaiser Permanente facility.
  • All of your care is provided at a Kaiser facility.
  • Services outside of a Kaiser facility are not covered except if it is a life-threatening emergency.
  • Early Retirees can remain on the Kaiser plan; once you reach age 65, you will need to enroll in the Kaiser Senior Advantage plan.