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About Wellmark

Patient Access API

Wellmark's Patient Access API provides software developers with a data interface to power an iOS, Android or Web app. Once a Wellmark ACA member (members who purchased their health insurance through the Health Insurance Marketplace) provides proper consent, your app can be used by the member — or their personal representative — to view their Wellmark health information including: health care provider visits and clinical data collected in the process of providing case management, care coordination, or other services to the member, etc. This REST External Site API provides access to the data via the HL7 FHIR External Site standard in JSON External Site form.

Once you register your organization, you and your developers can use the Wellmark developer portal to:

  • Read technical documentation on the Patient Access API
  • Register your app
  • Retrieve API keys
  • Test with Wellmark test data
  • Go live with your app

Enroll Now

What you need to enroll

Individual developer

If you are an individual developer, you can enroll in a Wellmark developer account after you receive an email from your organization admin. Click through the email to begin registration. You'll need basic personal information, including your legal name and address.


Organization's admin

As the person enrolling your organization, you must have the legal authority to bind your organization to legal agreements. You must be the organization's owner/founder, executive team member, senior project lead, or an employee with legal authority granted to you by a senior employee. Here's what you'll need:

  • A Taxpayer Identification Number (TIN) or D-U-N-S® Number – Your organization must have a TIN or D-U-N-S Number so we can identify and verify your organization. If you're not sure of your D-U-N-S number, you can do a D-U-N-S number lookup External Site.
  • An email address
  • Organization address
  • A domain name
  • A website

Begin Enrollment

Developer roles

Admin-onlyDeveloper / All users
  • Add or deactivate users
  • View contact information of all users
  • Edit others' user information
  • Register and deactivate apps
  • Edit app information
  • Edit security roles for any user on the account
  • Receive notifications for all apps by default
  • View all user IDs
  • Edit app information
  • Receive notifications about specific apps
  • View all users
  • View all apps
  • View all documentation
  • Edit app information
  • Test in Sandbox