CMS Medicare Monthly Enrollment

Medicare enrollment: Advantage vs Original

People on Medicare in every county, state, and the nation, each month since 2013: Original Medicare vs Medicare Advantage, dual eligibles (Medicare + Medicaid), disability, age, and Part D drug plans.

Published by CMS Medicare Monthly Enrollment Finest detail county Tables 1

How we use this · on 1 desk

“How many people here are on Medicare Advantage?”

Where you'll see it

Region Brief: County dossier
AI & Spreadsheets: at Level 3, link it into Excel or Google Sheets, download it, or ask your AI assistant about it

What we added

Matched to the same county codes as every other source, so it lines up cleanly with all of them
Every month kept since 2013
Checked every day for a new release, and loaded when there is one

See the desks →

Enrollment by county, state, nation and month Sample of 25 rows out of about 571,756 · 19 columns

year	month	geo_level	geo	state	county_name	total	original	advantage	aged	disabled	dual_eligible	full_dual	partial_dual	partd	partd_pdp	partd_mapd	partd_full_lis	age_85plus
2013	0	county	01001	AL	Autauga County	9323	6484	2840	7088	2235	1791	695	1096	6036	3268	2767	296	684
2013	1	county	01001	AL	Autauga County	9210	6421	2789	7049	2161	1776	707	1069	5938	3224	2714	294	728
2013	2	county	01001	AL	Autauga County	9234	6440	2794	7057	2177	1774	707	1067	5956	3237	2719	294	718
2013	3	county	01001	AL	Autauga County	9256	6456	2800	7072	2184	1785	702	1083	5971	3245	2726	295	711
2013	4	county	01001	AL	Autauga County	9290	6483	2807	7087	2203	1793	696	1097	5993	3260	2733	291	708
2013	5	county	01001	AL	Autauga County	9299	6486	2813	7084	2215	1790	688	1102	5995	3255	2740	293	700
2013	6	county	01001	AL	Autauga County	9303	6471	2832	7080	2223	1794	688	1106	6024	3265	2759	296	690
2013	7	county	01001	AL	Autauga County	9318	6476	2842	7081	2237	1798	696	1102	6046	3277	2769	300	682
2013	8	county	01001	AL	Autauga County	9352	6495	2857	7095	2257	1795	691	1104	6076	3291	2785	298	672
2013	9	county	01001	AL	Autauga County	9372	6499	2873	7107	2265	1796	694	1102	6098	3297	2801	296	663
2013	10	county	01001	AL	Autauga County	9392	6513	2879	7112	2280	1800	694	1106	6107	3298	2809	296	655
2013	11	county	01001	AL	Autauga County	9413	6522	2891	7117	2296	1799	690	1109	6114	3292	2822	298	644
2013	12	county	01001	AL	Autauga County	9437	6540	2897	7118	2319	1790	690	1100	6108	3280	2828	305	633
2014	0	county	01001	AL	Autauga County	9589	6565	3024	7271	2317	1844	718	1126	6260	3311	2949	296	689
2014	1	county	01001	AL	Autauga County	9478	6486	2992	7236	2242	1811	723	1088	6220	3303	2917	308	733
2014	2	county	01001	AL	Autauga County	9496	6503	2993	7236	2260	1819	725	1094	6220	3302	2918	301	721
2014	3	county	01001	AL	Autauga County	9509	6518	2991	7234	2275	1817	724	1093	6215	3299	2916	302	714
2014	4	county	01001	AL	Autauga County	9511	6507	3004	7224	2287	1821	720	1101	6215	3285	2930	290	709
2014	5	county	01001	AL	Autauga County	9530	6516	3014	7235	2295	1831	716	1115	6230	3290	2940	287	704
2014	6	county	01001	AL	Autauga County	9556	6545	3011	7248	2308	1827	716	1111	6231	3294	2937	292	694
2014	7	county	01001	AL	Autauga County	9589	6567	3022	7264	2325	1836	715	1121	6256	3308	2948	291	684
2014	8	county	01001	AL	Autauga County	9616	6591	3025	7277	2339	1855	718	1137	6260	3309	2951	287	677
2014	9	county	01001	AL	Autauga County	9655	6612	3043	7302	2353	1874	720	1154	6296	3327	2969	296	672
2014	10	county	01001	AL	Autauga County	9684	6649	3035	7316	2368	1879	717	1162	6312	3352	2960	297	664
2014	11	county	01001	AL	Autauga County	9711	6638	3073	7335	2376	1877	710	1167	6327	3329	2998	298	658

Need the whole thing? Spreadsheet links, downloads, and AI access come with Level 3.

See pricing