How many Medicare Advantage members in Montgomery County must pick a new plan for 2027?

3,021 of 58,369 members (5.2%): their plan is not sold in the county for 2027 according to the CMS crosswalk and Landscape. Pennsylvania as a whole: 6.9%; the nation: 10.6%.

Which plan in Montgomery County ends with the most members?

Humanachoice H5525-086 (PPO) (H5525-086, Humana Inc.): 1,305 members in September 2026, its service area reduced.

Which company ended the most plans in Montgomery County for 2027?

Humana Inc.: 1,330 of its 6,794 members in the county (19.6%), 2 of its 13 plans.

What share of Montgomery County's Medicare eligibles are in Medicare Advantage?

36.8% in September 2026: 71,241 of 193,843 eligibles, from the CMS state-county penetration file.

How are Montgomery County's members rated for 2027?

71.8% of members are in contracts rated 4 stars or more for 2027 (76.7% the year before); the member-weighted average star is 3.89 over 37 rated contracts.

How does 2027 compare with 2026 in Montgomery County?

12,847 members (22.5%) had to pick a new plan for 2026; for 2027 it is 3,021 (5.2%), a change of -9,826 members.

2027 open enrollment. 3.15 million people must pick a new Medicare Advantage plan. See every plan and county, free.3.15M must pick a new plan.

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Vlada / Medicare Advantage / Pennsylvania / Montgomery County

Medicare Advantage plan exits 2027 in Montgomery County, PA

3,021 of the 58,369 Medicare Advantage members in Montgomery County (5.2%) are in a plan that is not sold in the county for 2027: 8 of the 85 plans sold there in September 2026 end, from the CMS 2027 Landscape and crosswalk. Pennsylvania: 6.9%; the nation: 10.6%.

Period: plan year 2027 against September 2026 members · Updated 2026-10-20 · Next: CMS January 2027 enrollment (February 2027): where the members landed

members, Sept 2026: 58,369; members, Sept 2026
must pick for 2027: 3,021; must pick for 2027
share of members: 5.2%; share of members
plans end: 8 of 85; plans end

Medicare Advantage members in Montgomery County, 2015 to 2026

MA enrollment in September each year, with MA penetration (members over Medicare eligibles) at the top of each bar, from the CMS state-county penetration file. Navy: the last two years. 94 plans are listed for the county for 2027 against 91 for 2026.

The plans that end for 2027

Every plan sold in Montgomery County in September 2026 with members whose plan is not sold there for 2027: how it went (terminated, or its service area reduced so it continues elsewhere), the members the same company offers a new or renumbered plan of the same type, and the members whose company sells nothing in the county next year.

Plan	Company	Type	Members	Terminated	Service area reduced	Offered a new or renumbered plan
Humanachoice H5525-086 (PPO) H5525-086	Humana Inc.	Regular PPO	1,305	0	1,305	0
Personal Choice 65 Plus Rx (PPO) H3909-018	Independence Health Group, Inc.	Regular PPO	564	564	0	0
Jefferson Health Plans Flex Pro (PPO) H1619-003	Thomas Jefferson University	Regular PPO	449	449	0	449
Aetna Medicare Premier (HMO-POS) H3931-004	CVS Health Corporation	Regular HMO	343	343	0	343
Aetna Medicare Enhanced (PPO) H5521-122	CVS Health Corporation	Regular PPO	281	281	0	0
Jefferson Health Plans Flex Plus (PPO) H1619-002	Thomas Jefferson University	Regular PPO	42	42	0	42
Humana Gold Choice H8145-163 (PFFS) H8145-163	Humana Inc.	REGULAR OTHER	25	25	0	0
Wellcare Patriot Giveback (HMO-POS) H2915-013	Centene Corporation	Regular HMO	12	12	0	0
8 plans			3,021	1,716	1,305	834

Download this table (CSV, CC BY 4.0) · cells under 11 members are suppressed by CMS and count as zero, so every count is a floor.

By company in Montgomery County

Company	Members, Sept 2026	Plans	Plans ending	Must pick	Share of own members	Offered a new or renumbered plan
Humana Inc.	6,794	13	2	1,330	19.6%	0
CVS Health Corporation	9,884	10	2	624	6.3%	343
Independence Health Group, Inc.	26,960	12	1	564	2.1%	0
Thomas Jefferson University	2,574	9	2	491	19.1%	491
Centene Corporation	503	4	1	12	2.4%	0
UnitedHealth Group, Inc.	5,612	14	0	0	0.0%	0
Health Care Service Corporation	4,140	7	0	0	0.0%	0
Devoted Health, Inc.	1,323	8	0	0	0.0%	0
Highmark Health	336	4	0	0	0.0%	0
UPMC Health System	115	1	0	0	0.0%	0
Rifkin Managed Care Holding, LLC	95	1	0	0	0.0%	0
Risant Health, Inc.	33	2	0	0	0.0%	0

Montgomery County against Pennsylvania and the nation

Measure	County	Pennsylvania	United States
Must pick for 2027, share of members	5.2%	6.9%	10.6%
Must pick for 2026	22.5%		10.1%
Must pick for 2025, members	2,252 of 54,554
Must pick for 2026, members	12,847 of 57,117
Must pick for 2027, members	3,021 of 58,369

State and national figures: the Pennsylvania hub and the national report.

Star Ratings 2027 in Montgomery County

Measure	2027	2026	Change
Members in contracts rated 4+ stars	71.8%	76.7%	-4.9 pts
Member-weighted average star	3.89	3.95	-0.06
Rated contracts with members here	37	34

Members by star, 2027: 5.0: 436 · 4.5: 12,757 · 4.0: 37,625 · 3.5: 10,554 · 3.0: 9,375; 0 in unrated contracts. Each contract's 2027 overall star (CMS, released 2026-10-08) weighted by its 2026-09 members in the county, individual and group; 2026 by 2025-09 members.

Sources

CMS Medicare Advantage/Part D Landscape, plan year 2027: landscape_cy2027-landscape-202609-1.zip (CMS, September 2026); CMS plan crosswalk CY2027.
CMS monthly enrollment by contract, plan and county, 2026-09 (and the two Septembers before, for the series).
CMS MA state-county penetration file, September of each year (eligibles, enrollment, penetration).
CMS Star Ratings 2027, released 2026-10-08. Page object written 2026-10-20.

Receipts: athena(table=medicare_semantic.exits_cells_county_2027_v1, block=plans) 042eb472aa7d…; athena(table=medicare_semantic.exits_cells_county_2025_v1, medicare_semantic.exits_cells_county_2026_v1, medicare_semantic.exits_cells_county_2027_v1, block=series) ee9fd56a8632…; athena(table=medicare_semantic.ma_spine_county_market_v20261012b, block=market) e6c1b5ce62c0…; athena(table=medicare_semantic.ma_spine_contract_stars_v20261012b, weights=medicare_semantic.ma_spine_enroll_plan_county_v20261012a, block=stars) c39711c388e0…. Suppressed cells count as zero in every count.

Cite: Vlada Health (2026). Medicare Advantage plan exits 2027 in Montgomery County, PA. https://www.vladahealth.com/medicare-advantage/pa/montgomery. Data: CC BY 4.0.

Method

Population: members of individual Medicare Advantage plans (H and R contracts, plans 001 to 799, special needs plans included; employer group, Cost, MMP and PACE excluded) in the county in September 2026.
Must pick: the CMS crosswalk names no successor plan sold in the county for 2027; members CMS moves to a successor in the county are not counted.
Terminated: the plan is gone from every county. Service area reduced: the plan continues elsewhere but not here. Offered a new or renumbered plan: the same company sells, in this county, the same name under a new number or a new plan of the same HMO or PPO and special needs type. Company gone: no plan of any type from that company in the county.
Stars: each contract's overall star weighted by its September members in the county; unrated contracts counted apart, never as zero stars. Penetration: the CMS file's own eligibles and MA enrollment.
Suppression: CMS hides cells under 11 members; they count as zero, so every count is a floor and every share is not.

The full method and the national tables: How we counted, and how to check it.

Questions

How many Medicare Advantage members in Montgomery County must pick a new plan for 2027?: 3,021 of 58,369 members (5.2%): their plan is not sold in the county for 2027 according to the CMS crosswalk and Landscape. Pennsylvania as a whole: 6.9%; the nation: 10.6%.
Which plan in Montgomery County ends with the most members?: Humanachoice H5525-086 (PPO) (H5525-086, Humana Inc.): 1,305 members in September 2026, its service area reduced.
Which company ended the most plans in Montgomery County for 2027?: Humana Inc.: 1,330 of its 6,794 members in the county (19.6%), 2 of its 13 plans.
What share of Montgomery County's Medicare eligibles are in Medicare Advantage?: 36.8% in September 2026: 71,241 of 193,843 eligibles, from the CMS state-county penetration file.
How are Montgomery County's members rated for 2027?: 71.8% of members are in contracts rated 4 stars or more for 2027 (76.7% the year before); the member-weighted average star is 3.89 over 37 rated contracts.
How does 2027 compare with 2026 in Montgomery County?: 12,847 members (22.5%) had to pick a new plan for 2026; for 2027 it is 3,021 (5.2%), a change of -9,826 members.

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Use Vlada. In Montgomery County, Pennsylvania, which Medicare Advantage plans are not sold for 2027, how many members are in each, and what did 2026 look like? Give me a table with the source file, the data vintage and the response hash.

Behind it: get_county_view (state PA, county Montgomery) and get_landscape_exits (group_by county).