Where SilverScript Choice (PDP) members live
The table lists the 12 counties with the most members in September 2026. Los Angeles County alone had 41,239.
| County | Members, September 2026 |
|---|---|
| Los Angeles | 41,239 |
| Orange | 17,114 |
| San Diego | 10,863 |
| Santa Clara | 6,505 |
| Riverside | 5,788 |
| Ventura | 5,420 |
| Contra Costa | 4,673 |
| Alameda | 4,482 |
| Santa Barbara | 4,305 |
| Sacramento | 3,149 |
| San Mateo | 3,009 |
| San Luis Obispo | 2,995 |
Source: Goulson Insurance analysis of the CMS CY2027 Plan Crosswalk (October 1, 2026), the CMS CY2026 and CY2027 Landscape files, and CMS Monthly Enrollment by Contract, Plan, State and County (September 2026). CMS hides county counts of 10 or fewer members, but no California county was hidden for this plan in September 2026, so the counts are exact. You may republish it with credit under CC BY 4.0.
What you can choose for 2027
California has 10 stand-alone drug plans in the CMS 2027 Landscape file, down from 12 in 2026. You can join one of them or, if you would rather leave Original Medicare, a Medicare Advantage plan that includes drug coverage. Drug plans differ in premiums, deductibles, pharmacies and which drugs they cover, so the useful comparison runs your own prescriptions through each plan. Goulson Insurance does not offer every plan; Medicare.gov and 1-800-MEDICARE list all of them, and 1-800-MEDICARE is available 24 hours a day, 7 days a week.
Your deadlines and rights when a stand-alone drug plan ends
You can use the Annual Enrollment Period, October 15 through December 7, to choose a new drug plan, and a plan you choose then starts January 1. When your drug plan is not renewed for 2027, you also have a Special Enrollment Period from December 8 through the last day of February. A plan you join then starts on the first day of the following month, so a choice made in January starts February 1 and one made in February starts March 1, and you have no Medicare drug coverage until then. If you make no choice, your drug coverage ends with your plan on December 31, 2026, and if you later join a drug plan after going 63 days or more in a row without creditable drug coverage, a late enrollment penalty is added to your premium for as long as you have Medicare drug coverage, unless you get Extra Help. If you have Extra Help or Medi-Cal, Medicare may assign you a drug plan automatically, though you can still choose a different one. Instead of a stand-alone drug plan you can choose a Medicare Advantage plan that includes drug coverage, but a Medigap policy works only with Original Medicare. Our guide to Part D premiums in 2027 explains what drug plans cost.
Next steps for 2027
These pages can help you compare your choices for 2027. The Medigap rates and Medicare Advantage pages cover Los Angeles County. Lara is licensed across California and can go over your options with you at no cost.
Bring your letter and your list of prescriptions
Replacing a drug plan usually takes one conversation. Lara Goulson will go over your letter, your prescriptions and your pharmacies, and compare the drug plans she offers at no cost.
Is SilverScript Choice (PDP) your drug plan? Call (818) 472-5484 and we will help you choose what comes next, at no cost.
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