How to Enroll in Apple Health and Contract with WA MCOs

Short answer. As of October 2026, a Washington behavioral health agency gets paid by Apple Health in two steps: it holds a Department of Health (DOH) behavioral health agency license and enrolls with the Health Care Authority (HCA) in ProviderOne under a Core Provider Agreement, then it credentials and contracts with each managed care organization (MCO) that serves its clients. Five MCOs operate in Washington's integrated managed care regions: Coordinated Care, Community Health Plan of Washington, Molina, Wellpoint, and UnitedHealthcare Community Plan, and UnitedHealthcare serves six of the ten regions. Because most Medicaid clients are enrolled in an MCO, the MCO contract is where the revenue actually flows.

What do you need before you can enroll in Apple Health?

Apple Health enrollment starts with a license, not an application. HCA's mental health services billing guide (effective July 1, 2026) defines a behavioral health agency as an entity licensed by DOH under chapters 71.05, 71.24, or 71.34 RCW. Licensure and service-specific certification are governed by WAC 246-341. If you have not finished that step, start with our Washington BHA licensing guide.

Gather these items before opening the application:

• NPI. Register a National Provider Identifier for the organization through NPPES and keep the taxonomy codes consistent with the services you will bill.
• Taxonomy codes. ProviderOne asks for provider type and specialty derived from the taxonomy code, so choose them deliberately rather than copying a template.
• Licenses for every location. HCA's enrollment manual requires the applicable business and professional credentials for each physical location where a specialization is added.
• W-9. HCA requires a W-9 for all providers.
• Certified services list. Your DOH certifications determine which service lines you can bill, so match your enrollment specializations to them.

How do you enroll as a provider in ProviderOne?

Organizations enroll through HCA's provider enrollment application following the HCA group enrollment manual. The manual is specific about a few traps. The system assigns an application ID when you start, and an application is purged if it is not completed within 180 days. The relationship between HCA and the provider is governed by the Core Provider Agreement. Individual clinicians are then linked to the group through the "Add Servicing Provider" step, and the agency chosen for each servicing provider must match the agency noted for the group, or ProviderOne returns an error.

Federal rules sit underneath this process. State Medicaid programs must screen and enroll providers under 42 CFR Part 455, Subpart E, and managed care plans must follow provider selection standards at 42 CFR 438.214. That is why plans ask for HCA enrollment and why clean ownership and disclosure information matters.

Which MCOs do Washington behavioral health providers contract with?

HCA's January 2026 service area map shows five MCOs under integrated managed care, which combines physical and behavioral health in one plan:

The six western regions UnitedHealthcare serves have five plans each, so a Seattle, Tacoma or Olympia program should expect to pursue all five. In Spokane, Greater Columbia, North Central and Southwest Washington, plan around the four statewide plans. Apple Health clients who are American Indian or Alaska Native may choose coverage without a managed care plan (fee-for-service), so a small share of volume still routes through HCA directly. Clients who receive only behavioral health benefits are covered through an MCO's behavioral health services only (BHSO) program, so that volume also runs through your MCO contracts. Crisis services are administered separately through behavioral health administrative services organizations (BH-ASOs).

How does MCO credentialing and contracting actually work?

Each MCO credentials and contracts on its own timeline, and HCA's published MCO onboarding material describes the sequence plainly. In HCA's MCO onboarding resource, written for community-based settings but showing the same general flow, credentialing is the first step and can take up to 90 days. Submissions include current Washington licenses, liability insurance, the most recent facility survey, a W-9, and a roster of locations. After credentialing, the MCO drafts a contract, you sign it, and the MCO countersigns. Only once the contract is fully executed are you loaded into the MCO's systems for portal access and billing. HCA notes contracting can take as little as 30 days or much longer, and that each licensed location is credentialed separately.

Plan for these realities:

• Run MCOs in parallel. Start all applicable MCOs within the same two weeks so the slowest plan does not set your launch date.
• Credential every site. A new location is a new credentialing event, so add it to your roster the day the license issues.
• Align the survey. The "most recent facility survey" is the document plans read first. A recent accreditation or DOH survey with clean results speeds review, which is one reason to sequence CARF or Joint Commission accreditation deliberately.
• Negotiate before you sign. The first contract sets rate and billing terms for years, so review fee schedules and denial language rather than accepting a template.

How long does the full path take?

Timelines vary by plan and by how complete your file is. A realistic planning view, based on the published pieces above, looks like this:

For a founder, the practical point is that licensing, enrollment, and contracting overlap but do not collapse. Opening day without a loaded MCO contract means a facility that can admit patients but cannot get paid. Our Washington PHP guide, IOP guide, and residential treatment facility guide show how level of care changes the certification you carry into this process.

What causes Apple Health enrollment and contracting to fail?

The same handful of errors show up repeatedly in our work with Washington operators:

• Mismatched taxonomy. A taxonomy that does not match certified services produces rejected claims after months of waiting.
• Missing location documents. One location without a current license or insurance certificate stalls the whole application.
• Servicing provider errors. Clinicians linked to the wrong agency cannot bill under your group.
• Stale rosters. Added sites and staff that never reach the MCO roster get denied as out of network.
• No denial tracking. Authorization and eligibility denials hide contract problems, so monitor them from day one with the practices in our behavioral health denials guide.

Commercial insurance credentialing follows a different path, covered in our credentialing and payer contracting guide and payer contracting overview.

Frequently asked questions

Do I need a BHA license before enrolling in Apple Health?

For behavioral health agency billing, yes. HCA's billing guide defines the agency as one licensed by DOH under chapters 71.05, 71.24, or 71.34 RCW, so licensure comes first.

Is ProviderOne enrollment the same as being in an MCO network?

No. ProviderOne enrollment with a Core Provider Agreement establishes your relationship with HCA. MCO-enrolled clients must be served through the MCO's contracted network, so you also need credentialing and a contract with each plan.

Which MCOs serve Washington Apple Health?

Per HCA's January 2026 service area map, Coordinated Care, CHPW, Molina, and Wellpoint operate in all regions, and UnitedHealthcare Community Plan operates in North Sound, King, Pierce, Thurston-Mason, Salish, and Great Rivers.

How long does MCO credentialing take?

HCA's MCO onboarding material says credentialing can take up to 90 days, and contracting can take as little as 30 days or much longer.

What happens if I do not finish my ProviderOne application?

Per the HCA enrollment manual, an application is purged if it is not completed within 180 days of when it was started.

Own the whole path with one partner

Saint Health Group does not stop at a plan on paper. We prepare the BHA license and certification file, write the policies and procedures, build the ProviderOne and MCO credentialing packets for every location, negotiate contract terms, train your billing team, and run a full mock survey so you walk into DOH and payer review ready. Start with our payer contracting services, see how we support Washington behavioral health operators, or talk to our team about getting enrolled and contracted before your opening date.