Co-op City, Bronx: D-SNP and default enrollment letter help

County on forms: Bronx County (Bronx)
Medicaid run by: NYC HRA, citywide
ZIP codes (approx.): 10475

ZIP codes are orientation only. Verify yours with USPS.

Who this page helps

Co-op City is one of the largest cooperative housing developments in the country, and it has aged together. Thousands of residents who moved into Sections 1 through 5 as young families are now well past 65, and it is often described as a naturally occurring retirement community. An unusual number of households here hold Medicare and Medicaid at the same time, and word of mouth in the lobbies travels faster than the facts.

This page is for Co-op City residents who received a letter from their Medicaid plan about a Medicare D-SNP, for residents with both programs who want to know what IB-Dual actually is, and for the sons, daughters, and neighbors helping them. It explains the letter and points to free, unbiased help. It does not compare plans and does not enroll anyone.

What “local” means for Medicare and Medicaid in Co-op City

Co-op City is in Bronx County, and Medicaid here is administered citywide by HRA. ZIP 10475 covers the development and the Baychester blocks around it (approximate; verify with USPS). Write “Bronx” wherever a form asks for county; “Co-op City” is not a county.

There is no subway in Co-op City. Residents rely on Bx local buses to the 5 train and on express buses to Manhattan, and most medical trips point west toward NYC Health + Hospitals / Jacobi on Pelham Parkway South or Montefiore Einstein’s Weiler Hospital on Eastchester Road. Doctors’ offices and pharmacies around Bay Plaza serve much of the community; each is either in a specific D-SNP’s Medicare network or not, and a plan covering all five boroughs can still leave out the office by the supermarket. The closest in-person HIICAP site is in Parkchester, reachable by bus.

Co-op City has large English-speaking Black and Caribbean communities, many Spanish speakers, and a great many long-time residents over 65; interpreters are available on each line listed here.

How to get free help from Co-op City

Start with HIICAP at 1-800-701-0501 and say “Bronx” for your county. Many Co-op City residents have had Medicare for years and are only now getting Medicaid; tell the counselor which came first, because the default enrollment letter is mainly for people whose Medicare is about to start while they are in a Medicaid managed care plan.
In person, R.A.I.N. Parkchester Neighborhood Senior Center, 1380 Metropolitan Avenue, Bronx 10462, 718-597-9220, Monday through Friday 8 to 4, is the closest NYC Aging HIICAP site, by appointment; Neighborhood SHOPP, 910 East 172nd Street, 718-620-4650, is the other. NYC Aging Connect, 212-244-6469, can schedule either.
Opt-out requests and Medicaid plan questions go through New York Medicaid Choice at 1-800-505-5678 (TTY 1-888-329-1541). If you get home care and your letter mentions Medicaid Advantage Plus, the long-term care line is 1-888-401-6582.
For Medicaid renewals and case problems, the HRA Medicaid Helpline is 1-888-692-6116. For help lining up long-term supports for a spouse, NY Connects is 1-800-342-9871.

What to ask, in one sentence each

HIICAP“I have Medicare and Medicaid and got a default enrollment letter. Can you compare the D-SNP with Original Medicare plus a drug plan for my prescriptions and doctors?”
New York Medicaid Choice“If I opt out of the D-SNP, what happens to my Medicaid managed care plan and my home care? How do I opt out, and by when?”
Your plan (number on the letter)“Are my doctors and my pharmacy in the D-SNP’s Medicare network, not just the Medicaid network?”
HRA Medicaid Helpline“Is my Medicaid active and is my address correct?” (Only if your case, not your plan, is the problem.)

Free public help from Bronx

These lines are run by New York State, New York City, or Medicare. None of them sells plans. When the HIICAP recording asks for your county, say “Bronx.”

Numbers checked against official sources on September 10, 2026. Hours and phone menus change; the official sites are aging.ny.gov, nyc.gov/aging, nymedicaidchoice.com, nyconnects.ny.gov, and nyc.gov/hra.

Default enrollment letter tip for Co-op City

The most common Co-op City question is “my neighbor on the same floor got a letter and I did not, so is mine lost?” Usually it is not. The letter is sent by the Medicaid plan, and not every plan sends one; some plans do not offer default enrollment at all, and some have it suspended. Two neighbors with different Medicaid plans can have completely different experiences. If nothing has arrived and your Medicare is less than 60 days away, call HIICAP rather than the management office.

If you did receive one, the effective date and the opt-out deadline are on it. Because so many Co-op City residents have been on Medicare for years, double-check that the letter is about you and not about a spouse whose Medicare is just starting.

Not sure which letter you have? Read the default enrollment letter decoder or the blog post what to do in the first 7 days.

Common mistakes in Co-op City

Comparing letters across apartments. A neighbor in Section 5 with a different Medicaid plan can get a letter, or none, and it says nothing about what your plan will do.
Assuming that with no subway there is no way to get in-person counseling. The Parkchester HIICAP site is a bus ride away, and phone appointments work just as well.
Taking the pharmacy and medical offices around Bay Plaza for granted. They are in your Medicaid plan’s network today; check the D-SNP’s Medicare and Part D directories before the effective date.

Orientation: places people in Co-op City mention

Orientation only. Listing a hospital or center here is not a recommendation and says nothing about which plans it accepts. Always check the plan’s own provider directory.

NYC Health + Hospitals / Jacobi · Pelham Parkway South; nearest public hospital by bus
Montefiore Einstein, Jack D. Weiler Hospital · Eastchester Road, Morris Park; by bus
New York Public Library, Baychester branch · near Co-op City; free computers for Medicare.gov

Want your next steps in writing?

Answer five short questions about your coverage and your letter. We will email you a plain-language summary of what to ask and who to call from Co-op City. Optional callback. This tool does not enroll you in any plan, does not decide eligibility, and is not from the government. Free HIICAP counseling is always available first.

Get dual-plan help Call HIICAP 1-800-701-0501

Prefer to talk with a person right now? HIICAP is free at 1-800-701-0501.