CMS Data Research Catalog

Comprehensive catalog of CMS Data Research Dataset tables

Browse available CMS Research Data tables below. Each entry includes description and metadata.

Last Updated: 10/21/2025

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Benefits Data - Covered Services

• Description: Medicare Advantage covered services including medical benefits, supplemental benefits, preventive services, and utilization management requirements

• Table Name: benefits_data__services

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2019-01-01 to 2026-01-01

• Total Files: 338

Benefits Data - Part D Drug Coverage

• Description: Medicare Part D prescription drug coverage details including formulary tiers, cost sharing, deductibles, coverage phases, and pharmacy networks

• Table Name: benefits_data__part_d

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2019-01-01 to 2026-01-01

• Total Files: 131

Benefits Data - Plan Information

• Description: Medicare Advantage and Part D Plan Information including plan names, service areas, contact information, SNP details, and enrollment data

• Table Name: benefits_data__plan_info

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2019-01-01 to 2026-01-01

• Total Files: 19

Benefits Data - Premiums & Deductibles

• Description: Medicare Advantage and Part D premium amounts, deductibles, out-of-pocket maximums, and cost-sharing structures by plan

• Table Name: benefits_data__premiums_deductibles

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2019-01-01 to 2026-01-01

• Total Files: 114

Enrollment by Contract

• Description: Provides monthly enrollment for each contract. This report contains all organization types.

• Table Name: monthly_enrollment_by_contract

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2006-08-01 to 2025-10-01

• Total Files: 231

MA Contract Service Area

• Description: Provides contract service area by state and county for all organization types except for PDP and employer-direct PDP.

• Table Name: ma_contract_service_area_by_state_county

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2006-11-01 to 2025-10-01

• Total Files: 228

MA Enrollment by SCC

• Description: Provides monthly enrollment at the state/county/contract level for all organization types except for PDP and employer-direct PDP. Note: An abridged version is also provided that excludes rows with 10 or less enrollees.

• Table Name: monthly_ma_enrollment_by_state_county_contract

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2006-11-01 to 2025-10-01

• Total Files: 228

MA Enrollment by SCP

• Description: Provides the monthly enrollment at the state/county/plan type (Plan Benefit Package type) for all organization types except for PDP and employer-direct PDP organizations.

• Table Name: monthly_ma_enrollment_by_state_county_plan_type

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2016-11-01 to 2025-10-01

• Total Files: 105

MA State/County Penetration

• Description: Provides MA market penetration rates at the state/county level.

• Table Name: ma_state_county_penetration

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2008-07-01 to 2025-10-01

• Total Files: 208

Monthly Enrollment by CPSC (contract)

• Description: Provides monthly enrollment at the contract/plan/state/county level for all organization types.

• Table Name: monthly_enrollment_by_contract_plan_state_county

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2006-07-01 to 2025-10-01

• Total Files: 231

Monthly Enrollment by CPSC (enrollment)

• Description: Provides monthly enrollment at the contract/plan/state/county level for all organization types.

• Table Name: monthly_enrollment_by_contract_plan_state_county__enrollment

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2006-07-01 to 2025-10-01

• Total Files: 232

Monthly Enrollment by Plan

• Description: Provides monthly enrollment at the contract/plan level for all organization types.

• Table Name: monthly_enrollment_by_plan

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2007-07-01 to 2025-10-01

• Total Files: 211

Monthly Enrollment by State

• Description: Provides monthly the number of Medicare members (eligibles), MA enrolled, Other enrolled and PDP enrolled for each state.

• Table Name: monthly_enrollment_by_state

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2016-10-01 to 2025-10-01

• Total Files: 108

PDP Contract Service Area

• Description: Provides contract service area by state and county for PDP and employer-direct PDP organizations.

• Table Name: pdp_contract_service_area_by_state_county

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2007-03-01 to 2025-10-01

• Total Files: 222

PDP Enrollment by SCC

• Description: Provides monthly enrollment at the state/county/contract level for PDP and employer-direct PDP organizations. Note: An abridged version is also provided that excludes rows with 10 or less enrollees.

• Table Name: monthly_pdp_enrollment_by_state_county_contract

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2007-02-01 to 2025-10-01

• Total Files: 227

PDP Enrollment by SCP

• Description: None

• Table Name: monthly_pdp_enrollment_by_state_county_plan_type

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2016-10-01 to 2025-10-01

• Total Files: 109

PDP State/County Penetration

• Description: Provides PDP market penetration rates at the state/county level.

• Table Name: pdp_state_county_penetration

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2008-07-01 to 2025-10-01

• Total Files: 207

Part C&D Plan Crosswalk

• Description: Provides the list of annual plan crosswalks for all organization types.

• Table Name: plan_crosswalks

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2006-01-01 to 2026-01-01

• Total Files: 17

SNP Comprehensive Report

• Description: Provides monthly plan enrollment for each SNP and provides totals by SNP type.

• Table Name: special_needs_plan_snp_data

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2007-06-01 to 2025-10-01

• Total Files: 221

State Service Area

• Description: Provides the list of states covered in whole or in part by each contract. This file contains all organization types.

• Table Name: state_service_area

• Reference: CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data

• Report Period: 2006-09-01 to 2025-10-01

• Total Files: 227