Medicare Monthly Enrollment
The Medicare Monthly Enrollment data provides current monthly information on the number of Medicare beneficiaries with hospital/medical coverage and…
Part of the CMS Data Feeds Dataset › Medicare
Dataplex delivers this CMS feed as the analysis-ready table DWV.MEDICARE_MONTHLY_ENROLLMENT on Snowflake and Databricks — coverage from 2023 to 2026 in a single aligned schema, refreshed automatically whenever CMS publishes a new file. Every row carries lineage back to the exact CMS source file that produced it.
Key facts
Snowflake
DWV.MEDICARE_MONTHLY_ENROLLMENT
Databricks
cms_dwv.medicare_monthly_enrollment
Coverage
Apr 2023 – Mar 2026
Rows
17,298,819 (total across all reporting periods)
Cadence
Monthly
Update pattern
Time-partitioned — each file adds one reporting period
CMS published
2026-06-23
Loaded
2026-06-23
Columns
60 data + 6 lineage
Identifiers
FIPS codes
File versions
34
License
CMS public data — U.S. Government work
Platforms
Snowflake Marketplace · Databricks Delta Sharing
Included in the CMS Data Feeds Dataset — start a free trial on Snowflake Marketplace.
Current — CMS last published this feed on 2026-06-23. Coverage runs through 2026-03-31. Next CMS release expected ~Jul 2026.
Time-partitioned feed — each file version covers one reporting period, so history is additive. Query the full table for all periods; filter on YEAR for a single period. Do not filter to the latest file only — that would return just the 2026 reporting period.
Sample queries
About this feed
The Medicare Monthly Enrollment data provides current monthly information on the number of Medicare beneficiaries with hospital/medical coverage and prescription drug coverage, available for several geographic areas including national, state/territory, and county. The hospital/medical coverage data can be broken down further by health care delivery (Original Medicare versus Medicare Advantage and Other Health Plans) and the prescription drug coverage data can be examined by those enrolled in stand-alone Prescription Drug Plans and those enrolled in Medicare Advantage Prescription Drug plans. The dataset provides monthly and yearly enrollee trends.
— Source: CMS feed metadata
Keywords: National, States & Territories, Counties, Medicare, Original Medicare, Medicare Advantage, Medicare Prescription Drug, Beneficiary Enrollment, Health Equity Theme: Medicare
Coverage timeline
2023 🟩 · 2024 🟩 · 2025 🟩 · 2026 🟩
4 of 4 years covered — no gaps.
Release history
2026-03-01 – 2026-03-31
2026-06-23
2026-06-23
✓
2026-02-01 – 2026-02-28
2026-05-21
2026-05-21
2026-01-01 – 2026-01-31
2026-04-23
2026-04-23
2025-12-01 – 2025-12-31
2026-03-24
2026-03-24
2025-11-01 – 2025-11-30
2026-02-19
2026-02-19
2025-10-01 – 2025-10-31
2026-01-22
2026-01-22
2025-09-01 – 2025-09-30
2025-12-18
2025-12-18
2025-08-01 – 2025-08-31
2025-11-25
2025-11-25
2025-06-01 – 2025-06-30
2025-09-30
2025-09-30
2025-05-01 – 2025-05-31
2025-08-29
2025-08-29
Show 24 earlier file versions
2025-04-01 – 2025-04-30
2025-07-31
2025-07-31
2025-03-01 – 2025-03-31
2025-06-30
2025-06-30
2025-02-01 – 2025-02-28
2025-05-30
2025-05-30
2025-01-01 – 2025-01-31
2025-04-24
2025-04-24
2024-12-01 – 2024-12-31
2025-03-28
2025-03-28
2024-11-01 – 2024-11-30
2025-03-07
2025-03-07
2024-09-01 – 2024-09-30
2024-12-27
2024-12-27
2024-08-01 – 2024-08-31
2024-11-27
2024-11-27
2024-07-01 – 2024-07-31
2024-10-31
2024-10-31
2024-06-01 – 2024-06-30
2024-09-30
2024-09-30
2024-05-01 – 2024-05-31
2024-08-30
2024-08-30
2024-04-01 – 2024-04-30
2024-07-31
2024-07-31
2024-03-01 – 2024-03-31
2024-06-28
2024-06-28
2024-02-01 – 2024-02-29
2024-05-31
2024-05-31
2024-01-01 – 2024-01-31
2024-04-30
2024-04-30
2023-12-01 – 2023-12-31
2024-03-21
2024-03-21
2023-11-01 – 2023-11-30
2024-02-29
2024-03-06
2023-10-01 – 2023-10-31
2024-01-31
2024-01-31
2023-09-01 – 2023-09-30
2023-12-28
2023-12-28
2023-08-01 – 2023-08-31
2023-11-30
2023-11-30
2023-07-01 – 2023-07-31
2023-10-31
2023-11-01
2023-06-01 – 2023-06-30
2023-09-29
2023-09-30
2023-05-01 – 2023-05-31
2023-08-31
2023-09-01
2023-04-01 – 2023-04-30
2023-07-31
2023-08-29
Data dictionary
📋 60 data columns + 6 lineage columns
Column-level definitions are maintained by CMS in the official Medicare Monthly Enrollment data dictionary.
Data columns
YEAR
NUMBER
MONTH
TEXT
BENE_GEO_LVL
TEXT
BENE_STATE_ABRVTN
TEXT
BENE_STATE_DESC
TEXT
BENE_COUNTY_DESC
TEXT
BENE_FIPS_CD
TEXT
TOT_BENES
NUMBER
ORGNL_MDCR_BENES
NUMBER
MA_AND_OTH_BENES
NUMBER
AGED_TOT_BENES
NUMBER
AGED_ESRD_BENES
NUMBER
AGED_NO_ESRD_BENES
NUMBER
DSBLD_TOT_BENES
NUMBER
DSBLD_ESRD_AND_ESRD_ONLY_BENES
NUMBER
DSBLD_NO_ESRD_BENES
NUMBER
MALE_TOT_BENES
NUMBER
FEMALE_TOT_BENES
NUMBER
WHITE_TOT_BENES
NUMBER
BLACK_TOT_BENES
NUMBER
API_TOT_BENES
NUMBER
HSPNC_TOT_BENES
NUMBER
NATIND_TOT_BENES
NUMBER
OTHR_TOT_BENES
NUMBER
AGE_LT_25_BENES
NUMBER
AGE_25_TO_44_BENES
NUMBER
AGE_45_TO_64_BENES
NUMBER
AGE_65_TO_69_BENES
NUMBER
AGE_70_TO_74_BENES
NUMBER
AGE_75_TO_79_BENES
NUMBER
AGE_80_TO_84_BENES
NUMBER
AGE_85_TO_89_BENES
NUMBER
AGE_90_TO_94_BENES
NUMBER
AGE_GT_94_BENES
NUMBER
DUAL_TOT_BENES
NUMBER
FULL_DUAL_TOT_BENES
NUMBER
PART_DUAL_TOT_BENES
NUMBER
NODUAL_TOT_BENES
NUMBER
QMB_ONLY_BENES
NUMBER
QMB_PLUS_BENES
NUMBER
SLMB_ONLY_BENES
NUMBER
SLMB_PLUS_BENES
NUMBER
QDWI_QI_BENES
NUMBER
OTHR_FULL_DUAL_MDCD_BENES
NUMBER
A_B_TOT_BENES
NUMBER
A_B_ORGNL_MDCR_BENES
NUMBER
A_B_MA_AND_OTH_BENES
NUMBER
A_TOT_BENES
NUMBER
A_ORGNL_MDCR_BENES
NUMBER
A_MA_AND_OTH_BENES
NUMBER
B_TOT_BENES
NUMBER
B_ORGNL_MDCR_BENES
NUMBER
B_MA_AND_OTH_BENES
NUMBER
PRSCRPTN_DRUG_TOT_BENES
NUMBER
PRSCRPTN_DRUG_PDP_BENES
NUMBER
PRSCRPTN_DRUG_MAPD_BENES
NUMBER
PRSCRPTN_DRUG_DEEMED_ELIGIBLE_FULL_LIS_BENES
NUMBER
PRSCRPTN_DRUG_FULL_LIS_BENES
NUMBER
PRSCRPTN_DRUG_PARTIAL_LIS_BENES
NUMBER
PRSCRPTN_DRUG_NO_LIS_BENES
NUMBER
Lineage columns (present on every feed table)
ROW_ID
TEXT
Unique row ID for this table (PK)
FILE_ID
TEXT
Source file — joins to FEEDS_FILES.ID (FK)
FILE_FEED_ID
TEXT
Parent feed — joins to FEEDS.ID (FK)
FILE_NAME
TEXT
Source file name as published by CMS
ROWNUM
NUMBER
Row number within the source file
CREATED_AT
TIMESTAMP_NTZ
Timestamp when the record was loaded
Row-level lineage
Every row in this table traces to the exact CMS source file that produced it. The FILE_ID column joins to the FEEDS_FILES catalog table, and FILE_FEED_ID joins to the FEEDS master table:
Trace any row back to its source file and reporting period:
Source & provenance
Published by the Centers for Medicare & Medicaid Services (bureau 009:38).
Frequently asked questions
How often is Medicare Monthly Enrollment updated?
Monthly. CMS last published this feed on 2026-06-23, and Dataplex loaded it to the warehouse the same day. New releases are added automatically when CMS publishes them.
What years does Medicare Monthly Enrollment cover?
2023 through 2026.
How many records are in Medicare Monthly Enrollment?
17,298,819 rows across all 34 reporting periods. Because this feed is time-partitioned, the full table total is the meaningful count — no deduplication needed.
How do I get Medicare Monthly Enrollment data?
It's included in the CMS Data Feeds Dataset on the Snowflake Marketplace (free trial available) and via Databricks Delta Sharing. Once mounted, query DWV.MEDICARE_MONTHLY_ENROLLMENT directly — no pipeline setup required.
Related feeds
Medicare Geographic Variation - by National, State & CountySpecific Chronic ConditionsMedicare Part D Opioid Prescribing Rates - by GeographyMultiple Chronic ConditionsMedicare Inpatient Hospitals - by Geography and ServiceGet this feed
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Mount the share — the database and
DWVschema appear in your account immediatelyRun the sample query above — no ETL, no pipeline maintenance
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