Where HealthSpring Assurance Rx (PDP) members live
Members live in all 58 California counties. The table lists the 12 counties with the most members in October 2026; Los Angeles County alone had 123,111.
| County | Members, October 2026 |
|---|---|
| Los Angeles | 123,111 |
| San Diego | 39,660 |
| Orange | 36,491 |
| Riverside | 24,463 |
| Alameda | 23,755 |
| Santa Clara | 23,405 |
| San Bernardino | 18,624 |
| Sacramento | 17,900 |
| Contra Costa | 17,667 |
| Ventura | 16,089 |
| Fresno | 15,194 |
| San Francisco | 14,614 |
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 (October 2026). CMS hides county counts of 10 or fewer members, but no California county was hidden for this plan in October 2026, so the counts are exact. You may republish it with credit under CC BY 4.0.
What the new plan ID means for you
S5715-049 is the 2027 ID of the same drug plan: CMS lists it as a renewal of S5617-158, not as a new plan. In California, HealthSpring Assurance Rx (PDP) appears as S5617-158 in the CMS 2026 Landscape file and as S5715-049 in the 2027 file, with Health Care Service Corporation as its parent organization in both, so a 2027 letter or plan comparison that shows S5715-049 is about this plan. It renews automatically on January 1 with every change listed in its Annual Notice of Change (ANOC), which can include the premium, the deductible, the pharmacies and the drug list, so read yours before December 7; our guide to the ANOC letter shows what to check first. Another HealthSpring drug plan, HealthSpring Extra Rx (PDP) S5617-382, is not offered in California in 2027, and the crosswalk does not move its members into this plan.
Comparing drug plans for 2027
If the plan still suits you after its 2027 changes, you can let it renew. If it does not, you can switch during the Annual Enrollment Period, October 15 through December 7, to another stand-alone drug plan or, if you would rather leave Original Medicare, to a Medicare Advantage plan that includes drug coverage, and the new plan starts January 1. California has 10 stand-alone drug plans in the CMS 2027 Landscape file, down from 12 in 2026. Drug plans differ in premiums, deductibles, pharmacies and which drugs they cover, so the useful comparison runs your own prescriptions through each plan. Our guide to Part D premiums in 2027 explains what drug plans cost. 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.
Check another plan ID
If you have your plan ID, which starts with H, R or S followed by seven digits, such as H5521-419, type it here to see what CMS lists for that plan in 2027. This covers every 2026 Medicare Advantage plan and stand-alone drug plan offered in 11 of the 12 states where Lara Goulson is licensed; Kansas plans are not included yet.
From the CMS CY2027 Plan Crosswalk (October 1, 2026) and the CMS CY2026 and CY2027 plan landscape files. Employer group plans are not included.
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.
- Part D premiums in 2027
- Medigap rates in Los Angeles
- Los Angeles County Medicare Advantage in 2027
- Book a time with Lara
Help in Los Angeles, in English, Spanish or Hebrew
Other 2027 plan changes in California
- SilverScript Choice (PDP)
- HealthSpring Extra Rx (PDP)
- Aetna Medicare Signature (PPO)
- Aetna Medicare Enhanced (PPO)
- Sharp Direct Advantage VIP (HMO)
- Anthem Dual Advantage 2 (PPO D-SNP)
- Wellcare Giveback (HMO)
- Central Health Embrace Care Plan (HMO C-SNP)
- Central Health Medicare Plan (HMO)
- Alignment Health Honor+ Plan (HMO)
- Sharp Direct Advantage VIP Plus (HMO)
- Central Health Classic Care Plan III (HMO)
Bring your Annual Notice of Change and your list of prescriptions
Checking a drug plan for the new year usually takes one conversation. Lara Goulson will go over your Annual Notice of Change, your prescriptions and your pharmacies, and compare the drug plans she offers at no cost. If your plan is still the right one after its changes, she will tell you so.
Is HealthSpring Assurance Rx (PDP) your drug plan? Call (818) 472-5484 and we will go over its 2027 changes with you, at no cost.
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