Medicare Advantage enrollment, month by month · January 2026
Medicare Advantage enrollment in January 2026
34,995,672 people were in Medicare Advantage plans in January 2026, −0.6% on the month; the fifteen largest parent organizations had 83.7%.
34,995,672
Medicare Advantage enrollment
−0.6%
change on the month
169
parent organizations
24,926,230
stand-alone drug plan enrollment
The largest organizations
| Parent organization | Medicare Advantage enrollment | Share | Change on the month | Drug plan (PDP) enrollment | Contracts |
|---|---|---|---|---|---|
| Unitedhealth Group, Inc. | 9,406,942 | 26.9% | −887,434 (−8.6%) | 3,834,782 | 68 |
| Humana Inc. | 6,831,685 | 19.5% | +1,004,705 (+17.2%) | 3,538,861 | 39 |
| Cvs Health Corporation | 4,056,152 | 11.6% | −140,439 (−3.3%) | 4,002,665 | 43 |
| Kaiser Foundation Health Plan, Inc. | 1,994,204 | 5.7% | +602 (+0.0%) | 10,584 | 12 |
| Elevance Health, Inc. | 1,926,784 | 5.5% | −308,364 (−13.8%) | 67,252 | 48 |
| Centene Corporation | 964,941 | 2.8% | +201 (+0.0%) | 8,622,853 | 68 |
| Health Care Service Corporation | 863,545 | 2.5% | −97,626 (−10.2%) | 2,751,642 | 28 |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 677,258 | 1.9% | −118,234 (−14.9%) | 25,008 | 9 |
| Devoted Health, Inc. | 444,064 | 1.3% | +232,833 (+110.2%) | 0 | 42 |
| Scan Group | 414,226 | 1.2% | +98,584 (+31.2%) | 0 | 10 |
| Highmark Health | 409,098 | 1.2% | −77,027 (−15.8%) | 21,267 | 11 |
| Mhh Healthcare, L.P. | 366,997 | 1.0% | +12,328 (+3.5%) | 0 | 2 |
| Healthfirst, Inc. | 366,060 | 1.0% | +2,906 (+0.8%) | 0 | 4 |
| Lifetime Healthcare, Inc. | 301,873 | 0.9% | +17,734 (+6.2%) | 4,886 | 6 |
| Corewell Health | 279,626 | 0.8% | +24,111 (+9.4%) | 17 | 4 |
| Aware Integrated, Inc. | 279,411 | 0.8% | +70,907 (+34.0%) | 0 | 3 |
| Alignment Healthcare USA, LLC | 265,609 | 0.8% | +30,860 (+13.1%) | 0 | 8 |
| Guidewell Mutual Holding Corporation | 261,883 | 0.7% | −11,166 (−4.1%) | 47,670 | 6 |
| Molina Healthcare, Inc. | 235,160 | 0.7% | +15,029 (+6.8%) | 0 | 21 |
| Upmc Health System | 222,067 | 0.6% | −6,924 (−3.0%) | 2,032 | 6 |
| Bluecross Blueshield of Tennessee | 213,775 | 0.6% | +3,719 (+1.8%) | 0 | 2 |
| Curacor Solutions Corp. | 177,108 | 0.5% | +8,848 (+5.3%) | 30,871 | 5 |
| Clover Health Holdings, Inc. | 147,859 | 0.4% | +34,746 (+30.7%) | 0 | 2 |
| Independence Health Group, Inc. | 146,103 | 0.4% | −8,355 (−5.4%) | 6,560 | 11 |
| Point32health, Inc. | 145,925 | 0.4% | −2,874 (−1.9%) | 0 | 6 |
Biggest movers on the month
Among organizations with 10,000 or more enrollees, the largest changes from the month before.
| Parent organization | Medicare Advantage enrollment | Share | Change on the month | Drug plan (PDP) enrollment | Contracts |
|---|---|---|---|---|---|
| Humana Inc. | 6,831,685 | 19.5% | +1,004,705 (+17.2%) | 3,538,861 | 39 |
| Unitedhealth Group, Inc. | 9,406,942 | 26.9% | −887,434 (−8.6%) | 3,834,782 | 68 |
| Elevance Health, Inc. | 1,926,784 | 5.5% | −308,364 (−13.8%) | 67,252 | 48 |
| Devoted Health, Inc. | 444,064 | 1.3% | +232,833 (+110.2%) | 0 | 42 |
| Cvs Health Corporation | 4,056,152 | 11.6% | −140,439 (−3.3%) | 4,002,665 | 43 |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 677,258 | 1.9% | −118,234 (−14.9%) | 25,008 | 9 |
| Scan Group | 414,226 | 1.2% | +98,584 (+31.2%) | 0 | 10 |
| Health Care Service Corporation | 863,545 | 2.5% | −97,626 (−10.2%) | 2,751,642 | 28 |
| Sanford Health | 89,921 | 0.3% | +79,912 (+798.4%) | 0 | 7 |
| Highmark Health | 409,098 | 1.2% | −77,027 (−15.8%) | 21,267 | 11 |
Every organization with Medicare Advantage enrollment in January 2026
All 169.
| Parent organization | Medicare Advantage enrollment | Share | Change on the month | Drug plan (PDP) enrollment | Contracts |
|---|---|---|---|---|---|
| Unitedhealth Group, Inc. | 9,406,942 | 26.9% | −887,434 (−8.6%) | 3,834,782 | 68 |
| Humana Inc. | 6,831,685 | 19.5% | +1,004,705 (+17.2%) | 3,538,861 | 39 |
| Cvs Health Corporation | 4,056,152 | 11.6% | −140,439 (−3.3%) | 4,002,665 | 43 |
| Kaiser Foundation Health Plan, Inc. | 1,994,204 | 5.7% | +602 (+0.0%) | 10,584 | 12 |
| Elevance Health, Inc. | 1,926,784 | 5.5% | −308,364 (−13.8%) | 67,252 | 48 |
| Centene Corporation | 964,941 | 2.8% | +201 (+0.0%) | 8,622,853 | 68 |
| Health Care Service Corporation | 863,545 | 2.5% | −97,626 (−10.2%) | 2,751,642 | 28 |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 677,258 | 1.9% | −118,234 (−14.9%) | 25,008 | 9 |
| Devoted Health, Inc. | 444,064 | 1.3% | +232,833 (+110.2%) | 0 | 42 |
| Scan Group | 414,226 | 1.2% | +98,584 (+31.2%) | 0 | 10 |
| Highmark Health | 409,098 | 1.2% | −77,027 (−15.8%) | 21,267 | 11 |
| Mhh Healthcare, L.P. | 366,997 | 1.0% | +12,328 (+3.5%) | 0 | 2 |
| Healthfirst, Inc. | 366,060 | 1.0% | +2,906 (+0.8%) | 0 | 4 |
| Lifetime Healthcare, Inc. | 301,873 | 0.9% | +17,734 (+6.2%) | 4,886 | 6 |
| Corewell Health | 279,626 | 0.8% | +24,111 (+9.4%) | 17 | 4 |
| Aware Integrated, Inc. | 279,411 | 0.8% | +70,907 (+34.0%) | 0 | 3 |
| Alignment Healthcare USA, LLC | 265,609 | 0.8% | +30,860 (+13.1%) | 0 | 8 |
| Guidewell Mutual Holding Corporation | 261,883 | 0.7% | −11,166 (−4.1%) | 47,670 | 6 |
| Molina Healthcare, Inc. | 235,160 | 0.7% | +15,029 (+6.8%) | 0 | 21 |
| Upmc Health System | 222,067 | 0.6% | −6,924 (−3.0%) | 2,032 | 6 |
| Bluecross Blueshield of Tennessee | 213,775 | 0.6% | +3,719 (+1.8%) | 0 | 2 |
| Curacor Solutions Corp. | 177,108 | 0.5% | +8,848 (+5.3%) | 30,871 | 5 |
| Clover Health Holdings, Inc. | 147,859 | 0.4% | +34,746 (+30.7%) | 0 | 2 |
| Independence Health Group, Inc. | 146,103 | 0.4% | −8,355 (−5.4%) | 6,560 | 11 |
| Point32health, Inc. | 145,925 | 0.4% | −2,874 (−1.9%) | 0 | 6 |
| Medica Holding Company | 127,538 | 0.4% | +42,124 (+49.3%) | 100,924 | 7 |
| California Physicians' Service | 125,515 | 0.4% | −10,522 (−7.7%) | 41,030 | 5 |
| Network Health, Inc. | 122,885 | 0.4% | +30,667 (+33.3%) | 0 | 3 |
| Henry Ford Health System | 122,274 | 0.3% | +35,142 (+40.3%) | 0 | 4 |
| Bluecross Blueshield of Alabama | 118,181 | 0.3% | +317 (+0.3%) | 31,368 | 3 |
| Risant Health, Inc. | 114,281 | 0.3% | −4,186 (−3.5%) | 0 | 6 |
| Trinity Health Corporation | 94,980 | 0.3% | +37,837 (+66.2%) | 0 | 19 |
| Sanford Health | 89,921 | 0.3% | +79,912 (+798.4%) | 0 | 7 |
| Medical Mutual of Ohio | 87,899 | 0.3% | −17,180 (−16.3%) | 0 | 4 |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 77,530 | 0.2% | −21,648 (−21.8%) | 0 | 2 |
| Blue Cross & Blue Shield of Rhode Island | 76,697 | 0.2% | −2,841 (−3.6%) | 0 | 2 |
| Horizon Mutual Holdings, Inc | 74,309 | 0.2% | −7,456 (−9.1%) | 33,612 | 3 |
| Cambia Health Solutions, Inc. | 73,416 | 0.2% | −9,925 (−11.9%) | 1,333 | 9 |
| Caresource | 73,285 | 0.2% | +46,227 (+170.8%) | 0 | 5 |
| Intermountain Health Care, Inc. | 65,404 | 0.2% | −4,499 (−6.4%) | 0 | 1 |
| Martin's Point Health Care, Inc. | 63,269 | 0.2% | −21,999 (−25.8%) | 0 | 2 |
| Providence St Joseph Health | 62,233 | 0.2% | −17,607 (−22.1%) | 0 | 1 |
| Lumeris Group Holdings Corporation | 60,485 | 0.2% | +4,750 (+8.5%) | 0 | 2 |
| Healthpartners, Inc. | 54,013 | 0.2% | +1,770 (+3.4%) | 2,745 | 5 |
| Presbyterian Healthcare Services | 53,961 | 0.2% | −2,524 (−4.5%) | 0 | 1 |
| Pacificsource | 52,910 | 0.2% | +1,128 (+2.2%) | 0 | 2 |
| Triton Health Systems, L.L.C. | 52,647 | 0.2% | +279 (+0.5%) | 0 | 1 |
| Louisiana Health Service & Indemnity Company | 52,427 | 0.1% | +3,852 (+7.9%) | 0 | 2 |
| Mvp Health Care, Inc. | 51,263 | 0.1% | −23,723 (−31.6%) | 242 | 3 |
| Allina Health and Aetna Insurance Holding Company | 50,723 | 0.1% | +20,551 (+68.1%) | 0 | 1 |
| Visiting Nurse Service of New York | 50,439 | 0.1% | +7,213 (+16.7%) | 0 | 1 |
| Blue Cross Blue Shield of Arizona | 49,949 | 0.1% | +8,131 (+19.4%) | 0 | 2 |
| Capital Blue Cross | 48,269 | 0.1% | +12,910 (+36.5%) | 1,200 | 3 |
| Carefirst, Inc. | 46,857 | 0.1% | +13,998 (+42.6%) | 555 | 3 |
| Universal Health Services, Inc. | 46,284 | 0.1% | +8,248 (+21.7%) | 0 | 3 |
| Bluecross Blueshield of South Carolina (Bcbssc) | 45,926 | 0.1% | +10,613 (+30.1%) | 14,964 | 2 |
| Baylor Scott & White Health | 45,374 | 0.1% | +5,807 (+14.7%) | 0 | 2 |
| Independent Health Association, Inc. | 42,932 | 0.1% | −27,387 (−38.9%) | 7,257 | 3 |
| Imperial Health Plan of California | 42,329 | 0.1% | +15,493 (+57.7%) | 0 | 1 |
| Clever Care Health Plan, Inc. | 41,891 | 0.1% | +11,137 (+36.2%) | 0 | 1 |
| Astiva Health Holdings Incorporated | 39,914 | 0.1% | +443 (+1.1%) | 0 | 1 |
| Lmc Family Holdings, LLC | 39,476 | 0.1% | −4 (−0.0%) | 0 | 1 |
| Hawaii Medical Service Association | 39,035 | 0.1% | −284 (−0.7%) | 1,489 | 3 |
| Inland Empire Health Plan | 38,574 | 0.1% | −354 (−0.9%) | 0 | 1 |
| Emblemhealth, Inc. | 37,735 | 0.1% | −1,803 (−4.6%) | 97,587 | 4 |
| St Francis Health System & St John Health System | 37,009 | 0.1% | +1,907 (+5.4%) | 0 | 1 |
| Zing Health Consolidator, Inc | 35,974 | 0.1% | +368 (+1.0%) | 0 | 2 |
| Health First Shared Services, Inc. | 35,854 | 0.1% | +2,373 (+7.1%) | 0 | 1 |
| Atrio Health Plans | 35,830 | 0.1% | −3,267 (−8.4%) | 0 | 4 |
| Summa Health | 33,915 | 0.1% | +7,112 (+26.5%) | 0 | 1 |
| Gemstone Holdings, Inc. | 33,203 | 0.1% | −43,964 (−57.0%) | 0 | 2 |
| Local Initiative Health Authority for La County | 31,081 | 0.1% | +106 (+0.3%) | 0 | 1 |
| Blue Cross Blue Shield of Nebraska | 28,527 | 0.1% | +7,631 (+36.5%) | 0 | 2 |
| Thomas Jefferson University | 26,433 | 0.1% | +8,383 (+46.4%) | 0 | 3 |
| Elderplan, Inc. | 25,273 | 0.1% | +1,100 (+4.6%) | 0 | 1 |
| Doctors Healthcare Plans, Inc. | 21,844 | 0.1% | +1,872 (+9.4%) | 0 | 1 |
| Renown Health | 21,677 | 0.1% | +1,690 (+8.5%) | 0 | 1 |
| Fallon Community Health Plan, Inc. | 21,422 | 0.1% | −47 (−0.2%) | 0 | 4 |
| University of Wisconsin Hospitals and Clincs Autho | 21,401 | 0.1% | −14,913 (−41.1%) | 0 | 2 |
| Baycare Health System, Inc. | 19,897 | 0.1% | +4,601 (+30.1%) | 0 | 1 |
| Sharp Healthcare | 18,622 | 0.1% | +962 (+5.4%) | 0 | 1 |
| Orange County Health Authority | 18,509 | 0.1% | +47 (+0.3%) | 0 | 2 |
| Banner Health | 18,115 | 0.1% | −6,774 (−27.2%) | 0 | 2 |
| Mass General Brigham Incorporated | 17,530 | 0.1% | +9,267 (+112.2%) | 0 | 5 |
| Ultimate Healthcare Holdings, LLC | 17,059 | 0.0% | +9,461 (+124.5%) | 0 | 1 |
| Athena Healthcare Holdings, LLC | 16,843 | 0.0% | +2,010 (+13.6%) | 0 | 1 |
| Johns Hopkins Healthcare LLC | 14,649 | 0.0% | +1,839 (+14.4%) | 0 | 3 |
| Aultman Health Foundation | 14,630 | 0.0% | +373 (+2.6%) | 0 | 1 |
| Careoregon, Inc. | 14,588 | 0.0% | −1,114 (−7.1%) | 0 | 1 |
| Memorial Hermann Health System | 14,293 | 0.0% | +1,391 (+10.8%) | 0 | 1 |
| Baystate Health, Inc. | 14,107 | 0.0% | +1,242 (+9.7%) | 0 | 2 |
| The Health Plan of West Virginia, Inc. | 13,488 | 0.0% | +2,573 (+23.6%) | 0 | 2 |
| Usable Mutual Insurance Company | 13,463 | 0.0% | −10,197 (−43.1%) | 19,583 | 4 |
| New York City Health and Hospitals Corporation | 12,687 | 0.0% | +42 (+0.3%) | 0 | 1 |
| Lifebridge Health, Inc. | 11,892 | 0.0% | +1,810 (+18.0%) | 0 | 1 |
| Santa Clara County Health Authority | 11,739 | 0.0% | +50 (+0.4%) | 0 | 1 |
| Neighborhood Health Plan of Rhode Island | 11,498 | 0.0% | +11,498 (new) | 0 | 2 |
| West Virginia United Health System, Inc. | 11,248 | 0.0% | +7,682 (+215.4%) | 0 | 1 |
| Mercy Care | 10,680 | 0.0% | −161 (−1.5%) | 0 | 1 |
| Rifkin Managed Care Holding, LLC | 10,551 | 0.0% | +796 (+8.2%) | 0 | 8 |
| The Regents of the University of California | 10,165 | 0.0% | +2,828 (+38.5%) | 0 | 1 |
| Blue Cross Blue Shield of Kansas | 10,098 | 0.0% | +2,146 (+27.0%) | 138,548 | 2 |
| Community Health Group | 9,847 | 0.0% | +82 (+0.8%) | 0 | 2 |
| Siho Holding, Inc. | 9,790 | 0.0% | +4,676 (+91.4%) | 0 | 2 |
| Sentara Health Care (Shc) | 9,731 | 0.0% | −40,703 (−80.7%) | 0 | 3 |
| Community Health Plan of Washington | 9,193 | 0.0% | −4,974 (−35.1%) | 0 | 1 |
| Village Care of New York, Inc. | 8,492 | 0.0% | +894 (+11.8%) | 0 | 1 |
| Health Plan of San Mateo | 8,484 | 0.0% | −4 (−0.0%) | 0 | 1 |
| Christus Health | 8,397 | 0.0% | +1,169 (+16.2%) | 0 | 1 |
| Montage Health | 8,287 | 0.0% | +238 (+3.0%) | 0 | 1 |
| Mitchell Family Office | 7,732 | 0.0% | +233 (+3.1%) | 0 | 12 |
| Eternal Health of Delaware, Inc. | 7,523 | 0.0% | +4,502 (+149.0%) | 0 | 3 |
| Group 1001 | 7,291 | 0.0% | −2,512 (−25.6%) | 0 | 5 |
| Longevity Health Founders, LLC | 6,830 | 0.0% | −100 (−1.4%) | 0 | 7 |
| Central Mass Health Holding LLC | 6,725 | 0.0% | +2,868 (+74.4%) | 0 | 2 |
| Chinese Hospital Association | 5,867 | 0.0% | −27 (−0.5%) | 0 | 1 |
| Aspirus, Inc. | 5,719 | 0.0% | +3,387 (+145.2%) | 0 | 1 |
| Gold Kidney Health Plan | 5,315 | 0.0% | +808 (+17.9%) | 0 | 2 |
| Denver Health and Hospital Authority | 5,117 | 0.0% | +37 (+0.7%) | 0 | 1 |
| Bmc Health System, Inc. | 4,286 | 0.0% | −6,606 (−60.7%) | 0 | 2 |
| Coxhealth | 4,228 | 0.0% | +424 (+11.1%) | 0 | 1 |
| Verda Healthcare, Inc. | 3,971 | 0.0% | +627 (+18.8%) | 0 | 2 |
| Snp Holdings, LLC | 3,961 | 0.0% | −59 (−1.5%) | 0 | 2 |
| Associated Care Ventures, Inc. | 3,635 | 0.0% | +625 (+20.8%) | 0 | 1 |
| Unico Services, Inc. | 3,501 | 0.0% | +363 (+11.6%) | 0 | 2 |
| Dlp Marquette Health Plan, LLC | 3,074 | 0.0% | new | 0 | 1 |
| Liberty Healthcare Insurance | 3,066 | 0.0% | −73 (−2.3%) | 0 | 1 |
| Champion Health Plans-USA, LLC. | 3,062 | 0.0% | +2,772 (+955.9%) | 0 | 2 |
| Curana Health Holdings, LLC | 2,785 | 0.0% | +645 (+30.1%) | 0 | 5 |
| Regency Isnp Holdings LLC | 2,725 | 0.0% | +26 (+1.0%) | 0 | 1 |
| Select Founders, LLC | 2,689 | 0.0% | +68 (+2.6%) | 0 | 1 |
| Primewest Rural Mn Health Care Access Initiative | 2,658 | 0.0% | +1 (+0.0%) | 0 | 2 |
| Mclaren Health Care Corporation | 2,585 | 0.0% | −346 (−11.8%) | 0 | 1 |
| Allcare Health, Inc. | 2,552 | 0.0% | −42 (−1.6%) | 0 | 1 |
| Alohacare | 2,440 | 0.0% | +23 (+1.0%) | 0 | 1 |
| The Schroer Group, Inc. | 2,200 | 0.0% | +3 (+0.1%) | 0 | 1 |
| Troy Holdings, Inc. | 1,736 | 0.0% | +290 (+20.1%) | 0 | 1 |
| Hamaspik of Rockland County, Inc. | 1,667 | 0.0% | +58 (+3.6%) | 0 | 1 |
| Perennial Consortium, LLC | 1,636 | 0.0% | +688 (+72.6%) | 0 | 2 |
| Samaritan Health Services, Inc. | 1,564 | 0.0% | −12,147 (−88.6%) | 0 | 1 |
| South Country Health Alliance | 1,453 | 0.0% | +1 (+0.1%) | 0 | 2 |
| El Paso County Hospital District | 1,438 | 0.0% | +447 (+45.1%) | 0 | 1 |
| Missouri Healthcare Advisors, LLC | 1,338 | 0.0% | +12 (+0.9%) | 0 | 1 |
| Independent Living Systems, LLC | 1,230 | 0.0% | +38 (+3.2%) | 0 | 1 |
| First Sacramento Capital Funding LLC | 1,115 | 0.0% | −4 (−0.4%) | 0 | 1 |
| Group Health Cooperative of Eau Claire | 986 | 0.0% | +753 (+323.2%) | 0 | 1 |
| Fenyx Health Holdings, Inc. | 985 | 0.0% | +596 (+153.2%) | 0 | 1 |
| Harris County Hospital District | 973 | 0.0% | +214 (+28.2%) | 0 | 1 |
| Brightspring Health Services, Inc. | 968 | 0.0% | +16 (+1.7%) | 0 | 1 |
| Marquis Companies I, Inc. | 891 | 0.0% | +45 (+5.3%) | 0 | 1 |
| Kansas Superior Select | 839 | 0.0% | −12 (−1.4%) | 0 | 1 |
| Aids Healthcare Foundation | 605 | 0.0% | −3 (−0.5%) | 0 | 1 |
| Visiting Nurse Association of Central New York | 583 | 0.0% | +45 (+8.4%) | 0 | 1 |
| Bexar County Hospital District | 550 | 0.0% | +46 (+9.1%) | 0 | 1 |
| Isnp Holdings, LLC | 490 | 0.0% | +1 (+0.2%) | 0 | 1 |
| Singh Holdings LLC | 467 | 0.0% | +261 (+126.7%) | 0 | 1 |
| Community Care, Inc. | 461 | 0.0% | −29 (−5.9%) | 0 | 2 |
| Kern Health Systems (Khs) | 455 | 0.0% | new | 0 | 1 |
| Itasca County | 331 | 0.0% | +5 (+1.5%) | 0 | 1 |
| Santa Cruz Monterey Merced San Benito Mariposa Man | 330 | 0.0% | new | 0 | 1 |
| San Francisco Health Authority | 283 | 0.0% | new | 0 | 1 |
| Ventura County Medi-Cal Managed Care Commission | 259 | 0.0% | new | 0 | 1 |
| Chapters Carenu Inc | 240 | 0.0% | +1 (+0.4%) | 0 | 1 |
| San Joaquin County Health Commission | 188 | 0.0% | new | 0 | 1 |
| Santa Barbara San Luis Obispo Regional Health Auth | 178 | 0.0% | new | 0 | 1 |
| Imperial County Local Health Authority | 169 | 0.0% | new | 0 | 1 |
| Alameda Alliance for Health | 157 | 0.0% | new | 0 | 1 |
| Contra Costa Health Services | 154 | 0.0% | new | 0 | 1 |
| Elite Health Systems, Inc. | 16 | 0.0% | new | 0 | 1 |
What the data can and cannot say
- Enrollment is as CMS counts it for each contract in the month, grouped by the parent organization CMS records. CMS suppresses counts under eleven in this file, so totals run slightly below its summary report.
- Medicare Advantage here is coordinated care plans (local and regional), private fee-for-service and medical savings account plans. Stand-alone prescription drug plans are shown separately; PACE, cost and HCPP plans, which are other Medicare health plans, are left out.
- Month-to-month changes are largest at the start of a plan year, when the annual enrollment period takes effect.
Sources: CMS, Monthly Enrollment by Contract. Figures are as filed; none is estimated. Not investment advice.