# Medicare Advantage Enrollment API – Plans by County, Monthly

Medicare Advantage and Part D enrollment by contract, plan, state and county every month since January 2020, with organization, parent company, plan type, SNP and employer group flags, from CMS.

$0.80 per 1,000 records

[Get an API key](https://pushbuild.com/apis/app/signup?api=medicare-advantage-enrollment)

Example request

```
POST /medicare-advantage-enrollment/run
{
  "states": [
    "FL"
  ],
  "maxItems": 20
}
```

## What it returns

Medicare Advantage and Part D enrollment for every contract, plan, state and county, every month since January 2020: contract and plan ID, county and FIPS code, enrollment, organization and marketing name, parent organization, organization type, plan type, plan name, and whether the plan is a special needs plan, an employer group plan or offers Part D.

Filter by state, county, FIPS, organization, parent company, contract, plan name, plan type, SNP, employer group, Part D and month range. Or group to get total enrollment by parent organization, organization, contract, plan, plan type, state, county or month for market share and growth.

Source: CMS Monthly Enrollment by Contract/Plan/State/County, rebuilt monthly. CMS masks counts of 10 or fewer, so those county-plan rows are left out and totals run slightly below CMS's national figures.

Charged per row or group returned.

## Request

`POST https://api.pushbuild.com/medicare-advantage-enrollment/run` with a JSON body. Send your key in the `X-API-Key` header.

| Field | Type | Description |
| --- | --- | --- |
| `states` | list of strings | Two-letter state codes. |
| `county` | string | County name, e.g. Miami-Dade. |
| `fips` | list of strings | Five-digit county FIPS codes, e.g. 12086. |
| `organization` | string | Organization or marketing name contains, e.g. Humana. |
| `parentOrganization` | string | Parent company contains, e.g. UnitedHealth, CVS. |
| `contracts` | list of strings | CMS contract numbers, e.g. H1036. |
| `planName` | string | Plan name contains. |
| `planType` | string | Contains, e.g. HMO, Local PPO, PDP, PFFS. |
| `organizationType` | string | Contains, e.g. Local CCP, PDP, Employer/Union. |
| `snp` | boolean | true for SNPs only, false to exclude them. |
| `employerGroup` | boolean | true for employer/union group plans only, false to exclude them. |
| `offersPartD` | boolean | true for plans with drug coverage only. |
| `monthFrom` | string | YYYY-MM. Without a month range, the latest month is used. |
| `monthTo` | string | YYYY-MM. |
| `groupBy` | string: parentOrganization, organization, contract, plan, planType, organizationType, state, county, month | Total enrollment by parent organization, organization, contract, plan, plan type, organization type, state, county or month (market share and trends). |
| `maxItems` | integer | Maximum items to return (1-500). Default: `100`. |

### Example

```
curl -X POST https://api.pushbuild.com/medicare-advantage-enrollment/run \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"states": ["FL"], "maxItems": 20}'
```

### Response

```
{"count": 20, "truncated": false, "seconds": 1.4, "items": [ { ... } ]}
```

Each call returns up to 500 items. Records that fail validation or are not found are flagged in the items and not charged.

## Pricing

Pay only for results returned: $0.80 per 1,000 records. No charge for errors or empty searches.

## Use it from Claude, ChatGPT or Cursor

This API is also an MCP server: `https://api.pushbuild.com/mcp/medicare-advantage-enrollment`. Add it to any assistant that supports remote MCP servers, with your key in the `X-API-Key` header. Same prices. [Setup for each app](https://pushbuild.com/apis/mcp.html).

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## Tell us what you need built.

Questions about this API, higher volumes, or a data source you need that we don't cover yet.

[hello@pushbuild.com](mailto:hello@pushbuild.com?subject=API%20question)

[(617) 299-8887](tel:+16172998887)

---
As of 2026-11-05. Source: https://pushbuild.com/apis/medicare-advantage-enrollment.html