# CMS Data Research Catalog Browse available CMS Research Data tables below. Each entry includes description and metadata. **Last Updated**: 10/21/2025 🔗 [Find the CMS Data Research Dataset on the Snowflake Marketplace.](https://app.snowflake.com/marketplace/listing/GZT1Z125KDP/dataplex-consulting-data-products-cms-data-research-dataset) ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/benefits-data--services) * **Report Period**: 2019-01-01 to 2026-01-01 * **Total Files**: 338 ### Benefits Data - Inpatient Hospital (Acute) * **Description**: Medicare Advantage inpatient acute hospital stay benefit details including copays, coinsurance, deductibles, and prior authorization requirements (PBP B1A) * **Table Name**: benefits\_data\_\_inpatient\_hospital\_acute * **Reference:** [CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/benefits-data--inpatient-hospital-acute) * **Report Period**: 2002-01-01 to 2026-01-01 * **Total Files**: 37 ### Benefits Data - Inpatient Hospital (Psychiatric) * **Description**: Medicare Advantage inpatient psychiatric hospital stay benefit details including copays, coinsurance, deductibles, and prior authorization requirements (PBP B1B) * **Table Name**: benefits\_data\_\_inpatient\_hospital\_psychiatric * **Reference:** [CMS Data Research - Medicare Advantage/Part D Contract and Enrollment Data](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/benefits-data--inpatient-hospital-psychiatric) * **Report Period**: 2002-01-01 to 2026-01-01 * **Total Files**: 37 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/benefits-data--part-d) * **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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/benefits-data--plan-info) * **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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/benefits-data--premiums-deductibles) * **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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-enrollment-by-contract) * **Report Period**: 2006-08-01 to 2026-05-01 * **Total Files**: 238 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/ma-contract-service-area-by-state-county) * **Report Period**: 2006-11-01 to 2026-05-01 * **Total Files**: 235 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-ma-enrollment-by-state-county-contract) * **Report Period**: 2006-11-01 to 2026-05-01 * **Total Files**: 235 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-ma-enrollment-by-state-county-plan-type) * **Report Period**: 2016-11-01 to 2026-05-01 * **Total Files**: 112 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/ma-state-county-penetration) * **Report Period**: 2008-07-01 to 2026-05-01 * **Total Files**: 215 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-enrollment-by-contract-plan-state-county) * **Report Period**: 2006-07-01 to 2026-05-01 * **Total Files**: 238 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-enrollment-by-contract-plan-state-county--enrollment) * **Report Period**: 2006-07-01 to 2026-05-01 * **Total Files**: 239 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-enrollment-by-plan) * **Report Period**: 2007-07-01 to 2026-05-01 * **Total Files**: 218 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-enrollment-by-state) * **Report Period**: 2016-10-01 to 2026-05-01 * **Total Files**: 115 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/pdp-contract-service-area-by-state-county) * **Report Period**: 2007-03-01 to 2026-05-01 * **Total Files**: 228 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-pdp-enrollment-by-state-county-contract) * **Report Period**: 2007-02-01 to 2026-05-01 * **Total Files**: 234 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/monthly-pdp-enrollment-by-state-county-plan-type) * **Report Period**: 2016-10-01 to 2026-05-01 * **Total Files**: 116 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/pdp-state-county-penetration) * **Report Period**: 2008-07-01 to 2026-05-01 * **Total Files**: 214 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/plan-crosswalks) * **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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/special-needs-plan-snp-data) * **Report Period**: 2007-06-01 to 2026-05-01 * **Total Files**: 228 ### 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](https://www.cms.gov/data-research/statistics-trends-and-reports/medicare-advantagepart-d-contract-and-enrollment-data/state-service-area) * **Report Period**: 2006-09-01 to 2026-04-01 * **Total Files**: 233 --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.dataplex-consulting.com/data-catalog/cms-data-research-dataset/cms-data-research-catalog.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.