CMS · Medicare Advantage / Part D

Enrollment by Contract — Top Parent Organizations

Auto-aggregated from the CMS Monthly Enrollment by Contract release. Current-month enrollment with year-over-year net adds, year-over-year %, and year-to-date % alongside member-weighted Star Ratings, 24-month trend, and one-click stock lookups. Prior-month enrollment is listed as a reference column on the right. Tables sort and export to CSV.

Industry Enrollment

61,473,447

MoM +0.18% · +113,216

Year-over-Year

+4.5%

vs Jul 2025

Active CMS Contracts

968

Jul 2026

Top YoY Grower (Tracked)iRanked by absolute net adds year over year across the 16 tracked parent organizations. Both the absolute change (+ members) and % change vs the year-ago snapshot are shown. Providers must have at least 50,000 members in the prior year to qualify.

Humana

+2,899,435 · +35.7%

CMS Report: Enrollment by Contract Comparison

Trend window

	Current MonthJul 2026								Prior MonthJun 2026
Provider	EnrollmentJul 2026	YoY Net Addsvs Jul 2025	YoY % Changevs Jul 2025	YTD % Changevs Jan 2026	Trend24-mo	Overall★ 2026	Ticker	MoM Net Addsvs Jun 2026	EnrollmentJun 2026
#1UnitedHealth Group	13,069,472	-660,506	-4.8%	-1.3%		4.11★	UNH	+2,635	13,066,837
#2Humana	11,014,618	+2,899,435	+35.7%	+6.2%		3.81★	HUM	+28,501	10,986,117
#3Centene Corp.	9,784,703	+863,218	+9.7%	+2.1%		3.39★	CNC	+33,406	9,751,297
#4CVS Health (Aetna)	8,024,845	-249,798	-3.0%	-0.4%		4.20★	CVS	+1,421	8,023,424
#5Health Care Service Corp.	3,654,095	-621,091	-14.5%	+1.1%		3.63★	—	+8,304	3,645,791
#6Elevance Health (Anthem)	2,231,645	-450,307	-16.8%	-0.4%		3.90★	ELV	+3,911	2,227,734
#7Kaiser Permanente	2,110,746	+125,826	+6.3%	+5.3%		4.41★	—	+3,375	2,107,371
#8Blue Cross Blue Shield (assoc.)	890,783	-10,011	-1.1%	-2.6%		—	—	-2,949	893,732
#9Devoted Health	521,187	+308,774	+145.4%	+17.4%		4.24★	—	+8,822	512,365
#10SCAN Group	454,127	+146,475	+47.6%	+9.6%		4.01★	—	+2,681	451,446
Highmark Health	445,089	-59,454	-11.8%	+3.4%		4.38★	—	+19	445,070
Healthfirst	371,934	+15,165	+4.3%	+1.6%		4.45★	—	+1,360	370,574
Guidewell (Florida Blue)	307,784	-12,609	-3.9%	-0.6%		4.15★	—	-97	307,881
Alignment Healthcare	294,155	+70,212	+31.4%	+10.7%		4.15★	ALHC	+2,100	292,055
Molina Healthcare	223,597	-42,298	-15.9%	-4.9%		3.22★	MOH	-691	224,288
Clover Health	157,472	+50,841	+47.7%	+6.5%		3.51★	CLOV	+569	156,903
Industry total (all contracts)	61,473,447	+2,662,036	+4.5%	+2.1%				+113,216	61,360,231

How to read this: Each % Change and Net Adds column compares the enrollment column to its left against the next column to the right. The Trend column is a 24-month sparkline of the parent's total enrollment—green if today is above where they started, red if below. Star Ratings are 2026 Overall ratings, member-weighted across each parent's contracts. Use the trend window above to shorten the sparkline range. Values aggregate all CMS contracts whose Parent Organization field maps to the listed company. Contracts with enrollment ≤ 10 are masked by CMS (HIPAA) and contribute zero.