Managed Care Intelligence · CMS data
Where Medicare Advantage is winning — and where it isn't
County-level Medicare Advantage penetration overlaid on every SNF in our index. See which markets are saturated, which still skew fee-for-service, and how MA beneficiary volume, dual-eligible mix, and SNF utilization compare across states.
47.8%
National avg MA penetration
51
States + DC indexed
3,104
Counties analyzed
MI
Most penetrated state
Michigan · 63.3%
Most penetrated MA markets
Highest saturation1MichiganMI
Saturated63.3%
2AlabamaAL
Saturated60.9%
3MinnesotaMN
Saturated60.8%
4Rhode IslandRI
Saturated60.5%
5MaineME
Saturated59.1%
6WisconsinWI
Saturated58.1%
7North CarolinaNC
Saturated57.4%
8FloridaFL
Saturated57.4%
9OhioOH
Saturated57.3%
10LouisianaLA
Saturated56.9%
Highest contracting opportunity
Lowest penetration1WyomingWY
High opportunity19.4%
2MarylandMD
High opportunity25.5%
3MontanaMT
High opportunity29.9%
4VermontVT
High opportunity30.8%
5DelawareDE
High opportunity32.9%
6KansasKS
High opportunity33.3%
7NebraskaNE
High opportunity34.3%
8New HampshireNH
Moderate opportunity35.6%
9North DakotaND
Moderate opportunity35.6%
10MassachusettsMA
Moderate opportunity36.3%
Fastest MA beneficiary growth (2016–2022)
1New HampshireNH
+324.7%
2AlaskaAK
+316.8%
3VermontVT
+312.1%
4DelawareDE
+253.8%
5WyomingWY
+197.2%
6NebraskaNE
+158.3%
7New JerseyNJ
+150.8%
8MississippiMS
+144.4%
9MaineME
+139.8%
10AlabamaAL
+127%
Counties with the highest MA penetration
- 88.0%AitkinMinnesota · 4,411 of 5,011 enrolled
- 87.0%GallatinKentucky · 1,071 of 1,231 enrolled
- 83.5%HancockTennessee · 1,219 of 1,459 enrolled
- 82.7%StarrTexas · 8,540 of 10,328 enrolled
- 82.5%BullockAlabama · 1,689 of 2,046 enrolled
- 77.7%MonroeNew York · 134,509 of 173,126 enrolled
- 77.6%WillacyTexas · 2,868 of 3,698 enrolled
- 77.0%HidalgoTexas · 94,202 of 122,295 enrolled
- 77.0%OttawaMichigan · 47,460 of 61,669 enrolled
- 76.4%CambriaPennsylvania · 29,200 of 38,203 enrolled
Counties with the lowest MA penetration
≥ 1k eligibles- 0.9%FordKansas · 4,548 eligibles
- 1.3%FinneyKansas · 5,266 eligibles
- 1.5%BlaineMontana · 1,260 eligibles
- 1.7%ShermanKansas · 1,416 eligibles
- 1.7%CherryNebraska · 1,328 eligibles
- 1.8%PershingNevada · 1,202 eligibles
- 1.9%SewardKansas · 2,583 eligibles
- 1.9%LanderNevada · 1,049 eligibles
- 2.0%LakeOregon · 2,421 eligibles
- 2.3%White PineNevada · 1,963 eligibles
Source: CMS MA State/County Penetration (Aug 2025). Secondary trend metrics from CMS Medicare Advantage Geographic Variation PUF (2016–2022). Opportunity scores are computed from county/state penetration vs. the national average — lower penetration indicates higher headroom for managed-care contracting. Data is additive to existing CMS modules and does not modify provider, ownership, financial, penalty or survey records.