Centers for Medicare and Medicaid Services Bulk Data API
Information about the bulk data json files maintained by Marketplace API.
This API exposes 6 operations across 6 paths, and defines 17 schemas. It is described by OpenAPI 3.2.0, at version 1.
Requests are made against a single base URL, https://marketplace.api.healthcare.gov/api/v1.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Centers for Medicare and Medicaid Services Bulk Data API declares
1 security scheme
for authenticating requests.
An API key is passed in the query as apikey (API_Key).
By default, every request must be authenticated.
API_Key— Your API key should be included as a query parameter with the request. You can [fill out this form](https://cms.gov1.qualtrics.com/jfe/form/SV4N2GHCJfNuX7n8x)…
Paths & Operations 6
Across 6 paths, the API surfaces 6 operations — 6 GET. Each is listed below with its method, path, parameters, and response codes.
Information about the bulk data json files maintained by Marketplace API.
Schemas 17
The contract defines 17 schemas that model the data the API accepts and returns. The most detailed are StateMedicaid (12 properties), DecileUtilizationAgeMap (7 properties), CrosswalkData (7 properties), CountyZips (3 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
This is an independent, third-party profile of Centers for Medicare and Medicaid Services Bulk Data API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
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