Newsroom · San Diego County, California

Can I Keep My Sharp Doctors If Sharp Direct Advantage Ends?

Yes, through two doors Sharp itself lists: the UnitedHealthcare Sharp-network plans that continue in San Diego County for 2027, and Original Medicare with or without a Medigap policy. The catch is that "Sharp network" is two medical groups with two contracts, and the right answer for you depends on which one your doctor bills through.

Medicare On Main Data Desk

Published October 6, 2026 · 9 min read · Reviewed by Brian Penner

The letter dated October 2 ends an insurance plan, not a relationship with a doctor. We covered the exit itself yesterday (Is Sharp Direct Advantage ending in 2027?) and the county's full list of departing plans this morning (22 plans ending in San Diego County). This post is the question we are hearing most on the phone: I chose that plan because of my Sharp doctors. How do I keep them? The answer is built from three primary sources, Sharp's own accepted-plans pages and the two CMS plan files, and from a distinction Sharp's pages make that most people miss. Carrier and provider names here are factual reporting, not endorsement.

First: which Sharp are you a patient of?

Sharp HealthCare's Medicare page links to two separate accepted-plans pages, one for each medical group. They are different organizations with different contracts, and a plan that says "Sharp" on the card can include one and not the other. Here is what each page says today.

Sources: Sharp Rees-Stealy accepted insurance plans · Sharp Community accepted insurance plans (sharp.com) · Sharp Community Medical Group, Medicare plans accepted (scmg.org), all read October 6, 2026. Quoted wording is the pages' own. Neither page is dated; Sharp's umbrella page says the plans are accepted "through the end of 2026."

The practical reading: if your doctor is Rees-Stealy, the Medicare Advantage route runs through a UnitedHealthcare HMO plan, and the PPO plans on the county shelf are not an option for a new patient there by Rees-Stealy's own statement. If your doctor is Sharp Community, the HMO route is the same, and the "most of our doctors also accept PPOs and Medicare" sentence means a wider set of plans may work, doctor by doctor. Either way, Original Medicare works at both.

Door 1: the UnitedHealthcare plans Sharp lists, 2026 versus 2027

Sharp's Medicare page names ten UnitedHealthcare individual plans. Nine of them are in the CMS 2027 file for San Diego County; the tenth, the AARP CA-0035 PPO Rees-Stealy sees for established patients only, is not in the county file for 2027. The table matches each plan by its plan number across the two files, which is how two of the "new Sharp plans" turn out to be existing plans with a new name.

Source: CMS CY2026 and CY2027 landscape files, San Diego County, contract H0543, compared by plan number on October 6, 2026. Every 2026 row carries a 4.0 overall star; 2027 stars are not yet published. Copays, the services covered out of network under the POS option, and the provider directory are not in the file; they are in each plan's Evidence of Coverage. Listing a plan is not a recommendation.

For comparison, the plan you are leaving:

Source: CMS CY2026 landscape file; all four carried a $350 Part D deductible and a 3.5 overall star. Sold only in San Diego County.

Three things the table says plainly. The Sharp-named UnitedHealthcare plans are HMO-POS: per Medicare.gov, an HMO generally requires in-network care except in emergencies, and a point-of-service option lets you get some services out of network at a higher cost. The in-network cap moved from $2,900 or $3,300 to $4,450 on all three Sharp-named plans, a $1,150 to $1,550 difference in a bad year that the matching $0 premium does not show. And the $355 drug deductible is a little higher than Sharp Direct Advantage's $350. What the file cannot tell you is whether your particular doctor is in CA-001P's directory as opposed to CA-0012's, which is the only question that matters, and that is what the five steps below are for.

Door 2: Original Medicare keeps every Sharp doctor, with or without Medigap

All three Sharp pages list Original Medicare and all Medigap plans. That is not a courtesy; it is how Original Medicare works. Per Medicare.gov, a provider who accepts Medicare assignment bills Medicare directly, and there is no network to be in or out of. A Medigap policy pays after Medicare at any such provider and has no network of its own, so the "which medical group" question disappears entirely on this door. Care Compare is Medicare.gov's directory of doctors who accept Medicare.

• The guaranteed-issue right. Per Medicare.gov, when your Medicare Advantage plan leaves Medicare or stops serving your area, you may buy Medigap Plan A, B, D, G, K or L (C or F if you were eligible for Medicare before 2020) with no health questions, applying from 60 days before to 63 days after your coverage ends: November 1, 2026 through March 4, 2027. Keep the October 2 letter; it is the proof.
• California's birthday rule is a different right. The California Department of Insurance describes it as 60 days of open enrollment following your birthday each year, for people who already have Medigap, to buy a new Medigap policy with the same or lesser benefits without medical screening. It does not move you from an Advantage plan into Medigap; the discontinuation right above does that. Once you are on Medigap, the birthday rule is how you shop it each year.
• You will need a stand-alone drug plan. California has ten for 2027. Without one, the Part D late-enrollment clock starts after 63 days.
• Or Original Medicare alone. Lowest premium, no network, no cap on your 20 percent. Sharp accepts it; your budget may not.

How to verify your own doctor for 2027, in order

Marketing date: 42 CFR § 422.2263. Sharp's current acceptance statement: sharp.com. Nothing moves you automatically; a UnitedHealthcare plan with "Sharp" in the name is a choice you make between October 15 and December 7, not a default.

One more thing about the other 11 organizations on the county's 2027 shelf. Sharp's Medicare page does not list Blue Shield, SCAN, Alignment, Humana, Aetna, Anthem, Kaiser or the others among the plans it accepts, and we are not going to guess beyond the page. If a plan from one of those companies interests you, the five steps apply to it exactly the same way, and step 3 is the one that settles it.

The calendar from here

The letter is required by 42 CFR § 422.506 at least 90 days before the plan ends. Choose between October 15 and December 7 so the new coverage starts January 1 (Medicare.gov). The Special Enrollment Period from December 8 to February 28 is a net, not a plan: a January pick starts February 1, and January would be spent in Original Medicare with no drug coverage and no cap. Your Sharp doctors would still see you in January; the bill is the problem, not the door.

What I would do this week

1. Write down your medical group, every doctor, every prescription and your pharmacy. Rees-Stealy or Community goes at the top of the page.
2. If you are Rees-Stealy, shortlist the UnitedHealthcare HMO-POS plans only, and check each doctor in the 2027 directory by plan name. If you are Sharp Community, do the same, then ask the office which other plans they take.
3. Price the Medigap door honestly against the $4,450 cap. If you were in Sharp Direct Advantage for the $2,900 ceiling, a Medigap premium may buy you a lower worst case than any 2027 Advantage plan on the shelf; if you were in it for the $0 premium, probably not.
4. Recheck Sharp's accepted-plans page in late October. The 2027 statement will land before December 7; read it before you enroll.
5. Enroll between October 15 and December 7. CMS honors the last enrollment request, so an early choice can still be changed inside the window.

How we know all this: the Medicare On Main Data Desk frames every article with public data — here, Sharp HealthCare's, Sharp Rees-Stealy's and Sharp Community Medical Group's own accepted-plans pages as read on October 6, 2026, the CMS CY2026 and CY2027 landscape files compared by plan number, Medicare.gov's pages on provider acceptance, HMO rules and Medigap guaranteed-issue rights, the California Department of Insurance's Medigap birthday-rule guidance, and the federal rules on marketing dates, non-renewal notices and enrollment periods. Mentioning a carrier, a medical group or a health system is factual reporting, not endorsement or criticism. This is education, not advice; confirm plans, networks, costs and eligibility with the plan, your doctor's office, a licensed agent or Medicare.gov. We take no payment from any carrier to feature a plan.