Plan year 2026 · coverage ends Dec. 31, 2026CMS crosswalk of Oct. 1, 2026

Wellcare Dual Access Open is not offered in 2027

H4537Contract004Plan

PPO D-SNP · served 30 counties in Oklahoma in 2026

Run by Wellcare Health Insurance Company of Oklahoma, Inc. (contract H4537), sold as Wellcare, owned by Centene Corporation

CMS crosswalk: not offered in 2027

Not offered in 2027

Wellcare Dual Access Open (H4537-004) is not offered in 2027: the CMS plan crosswalk of October 1, 2026 lists it as terminated, so its coverage ends December 31, 2026. The plan's $4,000 dental allowance, $300 eyewear allowance and $1,000 hearing aid (both ears) allowance end with it; other plans sold in its counties may offer them (each county page lists the 2027 plans). 272 people were enrolled in it in September 2026. They can choose another plan during open enrollment, October 15 to December 7, 2026, to have no gap (or by the end of February, with coverage from the first of the next month); anyone who does not join another plan before it ends moves to Original Medicare, and because its members have Medicaid, Medicare enrolls them in a drug plan.

What do members lose for 2027?

The plan's 2026 amounts; it has none for 2027 under this ID.
What you pay or get	2026	2027	Change
Monthly premium	$28.20	not offered	plan ends
In-network out-of-pocket limit	$9,250	not offered	plan ends
Comprehensive dental, yearly limit	$4,000 a year	not offered	plan ends
Eyewear, yearly limit	$300 a year	not offered	plan ends
Hearing aids, yearly limit for both ears	$1,000 a year	not offered	plan ends
Counties served	30	none	plan ends

Source: CMS plan crosswalk from 2026 to 2027 (Oct. 1, 2026); CMS monthly enrollment by plan and by county, September 2026 (CMS hides counts under 11); CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision); CMS plan benefit package files, 2027 and 2026.

What can members do, and by when?

October 15 to December 7, 2026: Open enrollment: join another Medicare Advantage plan, or Original Medicare with a drug plan. Coverage starts January 1, 2027.
December 8, 2026 to the end of February 2027: A special enrollment period because the plan is leaving: you can still join a plan, but coverage starts the first day of the month after you join, so choose by December 31 to have no gap.
If you do nothing: You are enrolled in Original Medicare when the plan ends, without a drug plan unless you join one; if you have Extra Help or full Medicaid, Medicare enrolls you in a drug plan automatically.
If you choose Original Medicare: You have a guaranteed right to buy Medigap Plan A, B, C, D, F, G, K or L sold in your state by any insurance company; if you were new to Medicare on or after January 1, 2020, Plans D and G take the place of C and F. Apply from 60 days before to 63 days after the plan ends; the policy starts once your Medicare Advantage coverage ends. Other Medigap plans are not covered by this right.
If you have Medicaid or Extra Help: You can switch to a different drug plan, or leave a Medicare Advantage plan for Original Medicare with a drug plan, once a calendar month; the change starts the first day of the next month.
Help choosing: A special needs plan member can get free one-on-one help from the State Health Insurance Assistance Program (SHIP), or from the state Medicaid office for plans that work with Medicaid.

Source: Medicare.gov, “Special enrollment periods”, “When can I buy a Medigap policy?” and “Help with drug costs” (read Oct. 7, 2026).

Where did its members live?

Where its members lived in September 2026; each county and state page lists the 2027 plans sold there.

All 30 counties, most members first; CMS hides counts under 11 per county, so the counties add up to a little less than the plan's total
County	Members, Sept. 2026
Oklahoma, OK	57
Tulsa, OK	41
Cleveland, OK	31
Comanche, OK	15
Rogers, OK	13
Adair, OK	fewer than 11
Caddo, OK	fewer than 11
Canadian, OK	fewer than 11
Cherokee, OK	fewer than 11
Creek, OK	fewer than 11
Delaware, OK	fewer than 11
Garfield, OK	fewer than 11
Garvin, OK	fewer than 11
Grady, OK	fewer than 11
Kay, OK	fewer than 11
Le Flore, OK	fewer than 11
Lincoln, OK	fewer than 11
Logan, OK	fewer than 11
Mayes, OK	fewer than 11
McClain, OK	fewer than 11
McIntosh, OK	fewer than 11
Muskogee, OK	fewer than 11
Okmulgee, OK	fewer than 11
Osage, OK	fewer than 11
Ottawa, OK	fewer than 11
Pittsburg, OK	fewer than 11
Pottawatomie, OK	fewer than 11
Seminole, OK	fewer than 11
Sequoyah, OK	fewer than 11
Wagoner, OK	fewer than 11

Source: CMS monthly enrollment by plan and by county, September 2026 (CMS hides counts under 11).

What else should you check?

2027 plans in Oklahoma, OKThe plans you can join instead
Wellcare plans for 2027Plans the same company still offers
Every plan not offered in 2027764 Medicare Advantage and drug plans