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Collection ready · Monthly and annual

Medicare Plan Cost and Enrollment Index

A CMS-backed index for Medicare Advantage and Part D enrollment and plan-cost indicators, separated from medical advice or plan recommendations.

This is informational only and is not medical, legal, financial, or enrollment advice.

Status
Collection ready

Collection-ready from CMS public datasets; monthly enrollment files are the first target.

Metric
MA enrollment and plan premium indicators

Medicare Advantage enrollment, Part D enrollment, plan counts, and plan-year premium indicators by state or county.

Refresh
Monthly and annual

Published only after source refresh checks.

Downloads
Held

CSV downloads can be enabled after the first CMS-derived snapshot is generated.

Primary source plan

CMS monthly enrollment datasets plus annual Medicare Advantage and Part D landscape files.

CMS Medicare Advantage/Part D Contract and Enrollment Data

Format
CMS downloads and monthly report files
Cadence
Monthly; CMS targets publication by the 15th of each month
Collection
Pull Monthly Enrollment by State and county-level enrollment files, normalize state/county keys, and compute MA/PDP enrollment and penetration indicators.
Reuse / caveat
Small county enrollment rows may be suppressed or blank when CMS privacy rules apply.

CMS CY landscape files

Format
ZIP downloads with plan-year landscape files
Cadence
Annual plan-year release with periodic updates
Collection
Download the current CY landscape package and aggregate plan premiums, deductibles, and plan counts by state or service area.
Reuse / caveat
Plan availability and benefits are plan-year facts, not personalized enrollment advice.

Fields to collect

  • report periodCMS Medicare Advantage/Part D Contract and Enrollment Data
  • stateCMS Medicare Advantage/Part D Contract and Enrollment Data
  • countyCMS Medicare Advantage/Part D Contract and Enrollment Data
  • Medicare eligiblesCMS Medicare Advantage/Part D Contract and Enrollment Data
  • MA enrollmentCMS Medicare Advantage/Part D Contract and Enrollment Data
  • PDP enrollmentCMS Medicare Advantage/Part D Contract and Enrollment Data
  • penetration rateCMS Medicare Advantage/Part D Contract and Enrollment Data
  • contractCMS CY landscape files
  • planCMS CY landscape files
  • state/service areaCMS CY landscape files
  • monthly premiumCMS CY landscape files
  • deductibleCMS CY landscape files
  • plan typeCMS CY landscape files

This page is intentionally visible before every index has a production snapshot so readers and reviewers can inspect the source, cadence, and collection rule instead of finding an orphaned route later.

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