How to Open an ABA Clinic in Washington

Opening an ABA clinic in Washington follows the same backbone as anywhere — entity, NPI, credentialing, Medicaid enrollment — with Washington's own Medicaid program and rules layered on top. Here's the path.

The steps to open in Washington

1Form your entity & get an EIN. Register your business in Washington, obtain an IRS EIN, and prepare a W-9.

2Get your NPIs. A Type 1 NPI for each BCBA and a Type 2 NPI for the organization, free from NPPES.

3Secure liability insurance for the practice and rendering providers.

4Build & attest CAQH profiles for every provider — most commercial payers pull from CAQH.

5Enroll in Washington Medicaid. Enroll with Washington HCA (Apple Health) and any managed-care plans that administer behavior analysis benefits in Washington.

6Credential commercial payers and confirm each contract's effective date before billing.

Washington Medicaid

Medicaid is central to ABA access in most states. In Washington, behavior analysis benefits are administered through the state Medicaid program. Confirm current provider-enrollment steps, covered codes, authorization rules, and whether services run through managed-care plans directly with the agency below.

The universal pieces

Whatever the state, these national guides cover the details:

• How to start an ABA clinic — the full launch checklist.
• Insurance credentialing — NPI, CAQH, applications, timelines.
• Authorization & reauthorization — units, treatment plans, avoiding lapses.
• ABA billing — CPT codes, modifiers, clean claims.

This guide is general information, not legal, billing, or regulatory advice, and reflects publicly available information as of June 2026. Washington Medicaid, managed-care, and licensure rules vary and change — always confirm current requirements with Washington HCA (Apple Health) and qualified professionals before acting.