2027 open enrollment. 3.15 million people must pick a new Medicare Advantage plan. See every plan and county, free.3.15M must pick a new plan.
Look up your countyYour county →Medicare Advantage Data World
| Source | The data | Years |
|---|---|---|
| Enrollment | ||
| Plan exits and continuity, year over year | Every September member placed against next year's Landscape file: continuing, or departing in five buckets, by parent, state, county and product type, with where they went once the crosswalk lands. | 2023 to 2027 |
| MA enrollment, monthly | By plan, contract, parent organization, state, county and product type: HMO, PPO, PFFS; non-SNP, D-SNP, C-SNP, I-SNP. | 2006 to today |
| County penetration | Eligibles, enrolled and share, by county and month: MA, and stand-alone PDP. | 2008 to today |
| Enrollment as CMS totals it, by state, county and contract | CMS's own monthly totals: eligibles and MA, other and PDP enrollees by state; enrollees by contract and county; enrollees by plan type and county. Each file suppresses differently, so none adds to another. | 2006 to today |
| Low-income subsidy enrollment | LIS enrollees in every Part D plan, and by contract and county, one snapshot a year. | 2006 to 2026 |
| Where each contract sells | Service area by contract and county, monthly: MA and stand-alone PDP contracts, and every contract by state. | 2006 to today |
| Contract identity | Every contract ever seen, with its organization, parent, plan type, and first and last month. What makes "by parent" possible everywhere else. | 2006 to today |
| Plan directories and claims contacts | CMS's monthly contract roster, MA and PDP: legal entity, parent, type, enrollment and address, and each contract's claims contact. | 2007 to today |
| Online enrollment requests | Enrollment requests made through Plan Finder each month, MA and PDP. | 2014 to today |
| Benefits | ||
| Every plan's benefit design, one row per plan and year | The filed design of every MA plan segment, 2015 to 2026: 63 benefits from primary care to the OTC card, each with a status that says why the number is what it is, the D-SNP design and the dual-eligible experience side by side, product type, enrollment and the plan's predecessor. | 2015 to 2026 |
| Plan benefits, as filed | By plan and year, by benefit: dental, vision, hearing, OTC, the out-of-pocket max, copays by service, premium, giveback, Part D design, supplemental packages. | 2001 to 2026 |
| Plan design year over year, for the same members | Premiums and the $0 share, MOOP, the Part D deductible, Extra Help premium, D-SNP cost sharing and stars: this year's design against next year's for the members whose plan continues, weighted by members, by parent, state and product type. | 2023 to 2027 |
| Benefit changes year over year | The same, differenced through plan lineage: what each plan added, cut or repriced. | 2002 to 2026 |
| The Landscape | Premium, deductible, out-of-pocket max and star by plan and county for the coming year, every CMS edition. | 2006 to 2027 |
| Plan Finder benefit text | What the consumer reads on Medicare Plan Finder, by plan and service. | 2020 to 2026 |
| Plan lineage | What each plan became next year: renewed, consolidated, terminated, new. | 2006 to 2026 |
| D-SNP as two columns | The dual-eligible cost share and the design cost share side by side, never pooled. | 2008 to 2026 |
| Plan service area as filed | The counties each plan filed to serve for the plan year. | 2010 to 2026 |
| VBID participation | Which plans are in the model, with the flags and benefits filed under it. | 2017 to 2026 |
| Plan Value | Vlada's value of each plan's benefit package to the member, per month. Current method v16 (signed 2026-10-08), 2026 and 2027, by plan and by national, state and county market, the five legs, range ends, card bounds and the D-SNP full-dual column beside the filed design; the August v1 by plan, county and year 2023 to 2026. | 2023 to 2027 |
| Stars | ||
| Star ratings | The summary star by contract: Part C, Part D and overall. | 2009 to 2026 |
| Star measures | Every measure's raw score and star, by contract and year. | 2007 to 2026 |
| Cut points | By measure, star level and organization type, including next year's preview. | 2009 to 2027 |
| Star mechanics | CAI, reward factor, the methodology eras, and every contract's rating rebuilt and taken apart (raw score, CAI, reward factor, distance to the line), 99.04% exact against CMS. | 2015 to 2026 |
| Display measures | What CMS shows beside the stars but does not score: call center hold times, complaints, why members leave, access problems, and HEDIS for contracts too small to rate. | 2012 to 2026 |
| Measure identity over time | One row per Star measure identity per rating year, with that year's code, direction and cut points. CMS reuses codes; a year-over-year star joins on the identity, never the code. | 2015 to 2027 |
| HEDIS and HOS | By contract and measure, with national benchmarks. | 2019 to 2025 |
| SNP HEDIS, by plan | HEDIS rates for every Special Needs Plan, by plan and measure, with SNP type, enrollment and the counties it served. | 2019 to 2025 |
| Health Outcomes Survey, respondent level | Anonymised survey answers from MA members on health, function, falls and chronic conditions, with a two-year follow-up. | cohorts 18 to 27 |
| Corrective action plans | Every corrective action plan CMS required of an MA or Part D contract outside an audit, with the issue and the letter date. | 2014 to today |
| Warning letters | Every warning letter CMS sent an MA or Part D sponsor since September 2024, with the contracts, the issue and the date. | 2024 to today |
| The money | ||
| Plan payment | Risk score, rebate and A/B payment by plan and year, and by county. | 2006 to 2024 |
| Part D plan payment | Direct subsidy, reinsurance, low-income cost sharing and risk score, by plan and year. | 2006 to 2024 |
| County benchmarks | The ratebook by county and quality-bonus tier. | 2015 to 2027 |
| How each benchmark was built | By county and rate year: the FFS rate, applicable percentage, double bonus, caps and bonus-tier rates behind the ratebook, with the PACE, ESRD and risk score tables. | 1999 to 2027 |
| National per capita cost | The USPCC: Medicare cost per member per month by year, Part A and Part B, as each announcement restated it. | 2003 to 2027 |
| Loss ratios | MLR by contract and year. | 2014 to 2023 |
| What a plan may pay an agent | The most a plan may pay an agent or broker per enrollment each year: initial, renewal and referral caps, by state group, each cited to its CMS memo. | 2019 to 2027 |
| The risk model | HCC coefficients and the diagnosis-to-HCC map, by model version and population. | 2016 to 2027 |
| MA service use, by state | Who uses what in MA, from encounter data: users and use per 1,000 for 15 services, by state and nationally. The MA side of the FFS county file. | 2016 to 2023 |
| Part D | ||
| Formularies and prices | By plan, drug and quarter: coverage, tier, restrictions, price and cost share, insulin cost sharing, indication-only coverage. | 2019 to today |
| Formularies month by month | Every plan, formulary and cost share in every monthly edition: the change between quarters, and the first look at next year each October. | 2019 to today |
| Employers paid to keep retiree drug coverage | Every employer and union CMS paid the Retiree Drug Subsidy, with the dollars and the retirees covered, by year. | 2006 to 2024 |
| Prescribing and spending | By prescriber and drug; by drug and manufacturer. | 2013 to 2024 |
| Every prescriber, and opioid rates by place | One row per prescriber and year: claims, cost and patients, split by brand, plan type and subsidy. Opioid prescribing rates by state, county and ZIP. | 2013 to 2024 |
| Spending this year, by quarter | Preliminary Part D spending by drug for last year and this year to date, before the annual file. | 2025 to 2026 |
| Benchmarks and the low-income subsidy | The Part D national average bid and base premium, the low-income subsidy benchmark by PDP region, and the MA regional benchmarks. | 2006 to 2027 |
| From the price world | ||
| What hospitals charge MA plans | The negotiated rates hospitals filed for Medicare Advantage payers, by hospital, payer and billing code. | 3,894 hospitals |
| What is not here | ||
| Public and not yet loaded: member experience (CAHPS), low-income subsidy enrollment by plan, audits and sanctions, the ratebook before 2015. | ||
| Never public: encounter-level utilization, bid pricing, provider networks as filed. | ||
Built from 12 CMS release streams. Every table, its columns and its dates