Optum

Optum Fields API

The Fields API from Optum — 1 operation(s) for fields.

GitHub OpenAPI

Operations 1

GET /medicalnetwork/payerlist/v1/fields Get available payer list fields #

Documentation

📖
APIReference
https://developer.optum.com/eligibilityandclaims/reference/api-overview
📖
GettingStarted
https://developer.optum.com/eligibilityandclaims/docs/get-started-with-optum-api
📖
Authentication
https://developer.optum.com/eligibilityandclaims/docs/optum-security-and-authorization
📖
APIReference
https://developer.optum.com/optumreal-dental/reference/overview-real-dental
📖
GettingStarted
https://developer.optum.com/optumreal-dental/reference/get-started
📖
APIReference
https://developer.optum.com/pharmacysolutions/reference
📖
APIReference
https://developer.optum.com/paymentandreimbursement/reference
📖
APIReference
https://developer.optum.com/platformandinteroperability/reference
📖
APIReference
https://developer.optum.com/analyticsandinsights/reference
📖
APIReference
https://developer.optum.com/apitools/reference/security-and-authorization-v2-overview
📖
Documentation
https://developer.optum.com/apitools/docs/getting-started

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/optum/refs/heads/main/openapi/optum-fields-api-openapi.yml

Other Resources

🔗
ChangeLog
https://developer.optum.com/eligibilityandclaims/docs/eligibility-release-notes

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/optum-fields-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

optum-fields-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Payer List API V1 Fields API
  version: 1.0.0
  description: PayerList API empowers providers to programmatically access and integrate accurate, up-to-date payer list data into your systems to eliminate manual processes and enable smarter transaction workflows.
servers:
- url: https://sandbox-apigw.optum.com
  description: Sandbox
security:
- bearerAuth: []
tags:
- name: Fields
paths:
  /medicalnetwork/payerlist/v1/fields:
    get:
      tags:
      - Fields
      summary: Get available payer list fields
      operationId: getPayerListFields
      parameters:
      - name: skipBusinessNames
        in: query
        required: false
        schema:
          type: boolean
        description: Skip business names in fields response.
      - name: skipAliases
        in: query
        required: false
        schema:
          type: boolean
        description: Skip aliases in fields response.
      responses:
        '200':
          description: Successful fields response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FieldsResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  responses:
    Unauthorized:
      description: Unauthorized
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    InternalServerError:
      description: Internal server error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    ErrorResponse:
      type: object
      properties:
        code:
          type: string
        message:
          type: string
        details:
          type: array
          items:
            type: string
    FieldsResponse:
      type: object
      additionalProperties: true
      description: Fields response placeholder. Exact response schema was not provided in the source collection.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT