Washington Insurance Credentialing: CAQH, Apple Health and Premera in the Right Order
Washington insurance credentialing runs through one shared database, CAQH, and then through each payer’s own approval. You still have to grant access to every plan and keep the profile alive. Apple Health (Washington Medicaid) adds a separate state agreement on top.
What is Washington insurance credentialing?
Credentialing is a payer’s check of your license, education and history before it lets you join its network. In Washington, the health plans retrieve your application from a shared database. Our credentialing page and credentialing terms glossary define the terms.
Which database does Washington use for credentialing?
CAQH. OneHealthPort, the state’s lead organization for administrative simplification, reports that a working group recommended CAQH as the vendor for Washington credentialing starting in 2024. ProviderSource access through OneHealthPort ended December 31, 2023, and CAQH became the credentialing database on January 1, 2024. OneHealthPort adds that your OneHealthPort login will not work for CAQH (OneHealthPort, CAQH transition FAQ; OneHealthPort advisory, November 15, 2023).
CAQH has since rebranded as DataSpring. Its clinician FAQ says no action is needed: portal access, account information and provider profiles stay the same (DataSpring clinician FAQs, June 2026). Access is the step people miss most in Washington insurance credentialing.
How do I let plans see my application?
Complete your CAQH application, then grant access to every health plan that needs it. OneHealthPort states that if you have not granted access to a health plan, it cannot retrieve your application. If you are not sure you already have a CAQH account, contact CAQH first to avoid duplicates.
Commercial rules: what Premera does (one example)
This section covers one commercial payer. Other payers differ.
Premera Blue Cross requires its own steps after CAQH. Its behavioral health page says Premera does not credential associate-level providers, associates must be billed as the rendering provider, and re-credentialing occurs every three years (Premera behavioral health). Premera says the contract is not effective until it is counter-signed by Premera.
A new Premera provider agreement also takes effect for most providers in November 2026. Our planned post on Premera behavioral health billing (/premera-blue-cross-behavioral-health-billing-wa/, link after publish) explains it. For a broader view of Blue plans, use the Washington Blue Cross guide. Medicaid and commercial payers each add their own step to Washington insurance credentialing.
Medicaid rules: what Apple Health requires
This section covers Apple Health only.
To bill Apple Health outpatient mental health services, HCA says a professional must be independently licensed by the Department of Health, in good standing without restriction, and hold a current core provider agreement with HCA and an NPI (HCA mental health services billing guide). That guide is the July 1, 2024 version; confirm the latest on HCA’s site.
The core provider agreement does not put you in a managed care plan’s network. The HCA guide says managed care clients must see providers in their MCO’s network unless prior authorized or urgent, and non-contracted providers need approval from both the MCO and the client’s primary care provider. So you contract with each plan you want. Our post on Apple Health behavioral health billing (/washington-apple-health-behavioral-health-billing/, planned, link after publish) covers the five plans. The in-network versus out-of-network guide helps you decide.
What differs for psychiatrists and group practices?
Prescribers should keep every license and prescriber credential on the profile current before attesting. Groups should list every clinician’s status by payer, because rules for associates differ by plan. For the group-level view, see the network management glossary and our who we serve page.
Why a shared database does not end the work
CAQH holds your information, but each plan still decides whether to approve you, what its contract says and when your participation begins. Treat CAQH as the first step on every application, not the last. Keep your license, malpractice coverage details and practice locations consistent across CAQH and every payer form, because mismatches slow reviews. Use this checklist to keep Washington insurance credentialing on track.
A simple checklist
- Active Washington license and NPI.
- CAQH (DataSpring) profile complete and attested.
- Access granted to each plan.
- HCA core provider agreement, if you will see Apple Health patients.
- Contracts with each Apple Health plan and each commercial payer you choose.
- Written confirmation of your participation date before you bill.
- Calendar reminders for re-attestation and re-credentialing.
Confirm benefits and eligibility on every visit; see our insurance verification page. The Washington Office of the Insurance Commissioner regulates insurers and lists a complaint page for medical providers (Washington OIC).
Common Washington credentialing mistakes
- Completing the CAQH application but never granting a plan access.
- Creating a second CAQH account because you could not find the first one.
- Keeping a OneHealthPort login and expecting it to open CAQH.
- Assuming an associate-level clinician can hold a payer contract. Premera says it does not credential associates.
Avoiding these mistakes saves time in Washington insurance credentialing.
Frequently asked questions
Does Washington use CAQH for credentialing?
Yes. OneHealthPort reports CAQH became the credentialing database on January 1, 2024.
Do I need to give each plan access to my CAQH profile?
Yes. Without access, a plan cannot retrieve your application.
Can an associate-level clinician hold a Premera contract?
No. Premera says it does not credential associate-level providers.
Does an HCA core provider agreement put me in an Apple Health plan’s network?
No. It lets you bill Apple Health, but managed care plans have their own networks.
Where MCM South Medical Billing Service Works
MCM South Medical Billing Service, LLC works exclusively with mental and behavioral health practices, including psychotherapists and psychiatrists, and bills out-of-network claims. We offer our services to practices in Washington State, and we also work with practices in Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois. If you want to talk through your own billing, you can request a free consultation.
If you practice in Washington State, you can request a free consultation. Our Washington insurance contact guide, private insurance guides and mental health billing FAQ offer more.
