# Medicare Advantage market share by carrier

**Use case:** 

Rank Medicare Advantage carriers by enrollment and market share, with plan counts, county footprint and enrollment-weighted Star Ratings.

## Input

```json
{
  "outputMode": "carriers",
  "signalScope": "plan",
  "currentPeriod": "2026-08",
  "previousPeriod": "2026-07",
  "organizations": [
    "Humana",
    "UnitedHealth Group"
  ],
  "contractIds": [
    "H0028",
    "H4513"
  ],
  "planIds": [
    "009"
  ],
  "states": [
    "TX",
    "FL"
  ],
  "counties": [
    "48201"
  ],
  "snpOnly": false,
  "planUniverse": "medicare-advantage",
  "minEnrollmentChangePercent": 10,
  "minEnrollmentChangeAbsolute": 25,
  "minMarketShareChangePp": 0.5,
  "deltaMode": "all",
  "stateStoreName": "ma-carrier-share-monitor",
  "skipWhenNoNewCmsPeriod": true,
  "initializeStateOnly": false,
  "emitRemovedRecords": true,
  "includeStarRatings": true,
  "includeSnpDetail": true,
  "includeEmployerGroupPlans": false,
  "includeSuppressedRows": false,
  "debug": false
}
```

## Output

```json
{
  "parentOrganization": {
    "label": "Carrier",
    "format": "string"
  },
  "totalEnrollment": {
    "label": "Enrollment",
    "format": "number"
  },
  "previousTotalEnrollment": {
    "label": "Enrollment (prev)",
    "format": "number"
  },
  "enrollmentChange": {
    "label": "Change",
    "format": "number"
  },
  "enrollmentChangePercent": {
    "label": "Change %",
    "format": "number"
  },
  "nationalMarketSharePercent": {
    "label": "Observed national share %",
    "format": "number"
  },
  "previousNationalMarketSharePercent": {
    "label": "Observed national share % (prev)",
    "format": "number"
  },
  "marketShareChangePp": {
    "label": "Share change (pp)",
    "format": "number"
  },
  "contractCount": {
    "label": "Contracts",
    "format": "number"
  },
  "planCount": {
    "label": "Plans",
    "format": "number"
  },
  "previousPlanCount": {
    "label": "Plans (prev)",
    "format": "number"
  },
  "stateCount": {
    "label": "States",
    "format": "number"
  },
  "countyCount": {
    "label": "Counties",
    "format": "number"
  },
  "previousCountyCount": {
    "label": "Counties (prev)",
    "format": "number"
  },
  "newCountyCount": {
    "label": "Counties added",
    "format": "number"
  },
  "exitedCountyCount": {
    "label": "Counties dropped",
    "format": "number"
  },
  "averageStarRating": {
    "label": "Avg Star Rating",
    "format": "number"
  },
  "weightedStarRating": {
    "label": "Weighted Star Rating",
    "format": "number"
  },
  "ratedContractCount": {
    "label": "Rated contracts",
    "format": "number"
  },
  "states": {
    "label": "States",
    "format": "text"
  },
  "organizationNames": {
    "label": "Organizations",
    "format": "text"
  },
  "signals": {
    "label": "Signals",
    "format": "array"
  },
  "signalScore": {
    "label": "Score",
    "format": "number"
  },
  "dataPeriod": {
    "label": "CMS period",
    "format": "string"
  },
  "previousDataPeriod": {
    "label": "Compared with",
    "format": "string"
  },
  "monitoringChangeType": {
    "label": "Since last run",
    "format": "string"
  },
  "recordId": {
    "label": "Record ID",
    "format": "string"
  }
}
```

## About this Actor

This example demonstrates how to use [Medicare Advantage Competitive Intelligence Monitor](https://apify.com/huykenny/medicare-advantage-competitive-intelligence.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/huykenny/medicare-advantage-competitive-intelligence.md) to learn more, explore other use cases, and run it yourself.


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For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/huykenny/medicare-advantage-competitive-intelligence.md

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).