CMS Medicare enrollment · April 2026
Arizona Medicare Enrollment
State and county enrollment from CMS, including Original Medicare, Medicare Advantage and Other Health Plans, and Part D coverage.
Informational only. These enrollment counts do not compare plans or provide medical, financial, or enrollment advice.
Arizona enrollment figures
- Total Medicare enrollment
- 1.6M
- Original Medicare
- 754.1K
- MA & Other share
- 51.5%
- Part D coverage
- 81.1%
1,554,905
754,128 beneficiaries
CMS combined delivery-system measure
1,261,124 beneficiaries
County enrollment
16 CMS county rows for Arizona. Unavailable values remain marked as not reported rather than estimated.
| County | Total | Original Medicare | MA & Other | MA & Other share | Part D share |
|---|---|---|---|---|---|
| Apache County | 15,470 | 10,837 | 4,633 | 29.9% | 61.8% |
| Cochise County | 38,064 | 19,585 | 18,479 | 48.5% | 69.5% |
| Coconino County | 24,587 | 16,368 | 8,219 | 33.4% | 74.1% |
| Gila County | 18,279 | 10,563 | 7,716 | 42.2% | 78.7% |
| Graham County | 6,446 | 2,810 | 3,636 | 56.4% | 80.9% |
| Greenlee County | 1,327 | 603 | 724 | 54.6% | 77.6% |
| La Paz County | 6,773 | 3,550 | 3,223 | 47.6% | 72.6% |
| Maricopa County | 812,942 | 396,616 | 416,326 | 51.2% | 82.7% |
| Mohave County | 78,014 | 36,617 | 41,397 | 53.1% | 79.9% |
| Navajo County | 28,379 | 17,285 | 11,094 | 39.1% | 73.2% |
| Pima County | 262,707 | 111,535 | 151,172 | 57.5% | 82.1% |
| Pinal County | 107,359 | 45,999 | 61,360 | 57.2% | 82.7% |
| Santa Cruz County | 12,291 | 4,074 | 8,217 | 66.9% | 84.7% |
| Unknown | Not reported | Not reported | Not reported | Not reported | Not reported |
| Yavapai County | 96,008 | 55,685 | 40,323 | 42% | 78.5% |
| Yuma County | 46,259 | 22,001 | 24,258 | 52.4% | 77.8% |
Source and interpretation
CMS Medicare Monthly Enrollment, April 2026, published 2026-07-23. “MA & Other” retains the official combined CMS field label.
- CMS suppresses some small counts with an asterisk; suppressed values remain null in this snapshot.
- Medicare Advantage and Other Health Plans is the CMS-published combined measure and is not limited to Medicare Advantage alone.
- Enrollment counts describe a reporting month and do not compare plan benefits, provider networks, quality, or personal costs.