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NEMT billing · WA

NEMT billing in Washington

Short answer

NEMT billing in Washington runs through the six regional brokers that the Health Care Authority contracts to arrange Apple Health rides, not through ProviderOne. A transportation provider is paid by the broker only under a subcontract with it, every non-ambulance trip is authorized by the broker before the client travels, and the broker's subcontract, trip verification and audit terms decide whether a trip is paid.

A dedicated Remitwright biller keeps each broker's authorization, mileage and submission rules straight and works the trips a broker questions, serving Washington transportation providers remotely. Rules for other states are on the NEMT billing by state page.

Last reviewed by the Remitwright billing team. Editorial policy

  • Facts verified October 30, 2026

Key facts for Washington NEMT billing

Key facts for Washington NEMT, each with its source
FactIn WashingtonSource
How NEMT is deliveredRegional broker model2
Who you billNorthwest Regional Council; Hopelink; Paratransit Services; Community in Motion (formerly Human Services Council); People for People; Special Mobility Services3
Medicaid enrollment portalProviderOne8

How Washington delivers NEMT

Regional broker model. Washington established a brokerage for Medicaid non-emergency medical transportation in 1989, and HCA contracts with six transportation brokers that serve 13 geographic regions and cover all 39 counties, each one arranging rides for Apple Health clients in its own counties.2 WAC 182-546-5300 covers managed care enrollees through the same brokers as fee-for-service clients, and WAC 182-546-5200 requires each broker to hold subcontracts with transportation providers in order for the providers to be paid, to select the lowest-cost available mode that is both accessible to the client and appropriate to the client's condition, and to set the level of assistance for each authorized trip, from curb-to-curb to hand-to-hand. HCA's program page says the brokers are held to performance-based contracts.

Who you bill3

  • Northwest Regional CouncilRegionsIsland, San Juan, Skagit and Whatcom countiesHCA's May 2025 broker list says the brokers are the first point of contact for any transportation-related complaint.
  • HopelinkRegionsKing and Snohomish counties
  • Paratransit ServicesRegionsPierce, Clallam, Jefferson, Kitsap, Mason, Pacific, Grays Harbor, Thurston and Lewis counties
  • Community in Motion (formerly Human Services Council)RegionsClark, Cowlitz, Klickitat, Skamania and Wahkiakum counties
  • People for PeopleRegionsChelan, Douglas, Okanogan, Benton, Columbia, Franklin, Kittitas, Yakima and Walla Walla counties
  • Special Mobility ServicesRegionsFerry, Stevens, Pend Oreille, Lincoln, Grant, Adams, Spokane, Whitman, Garfield and Asotin counties

Getting enrolled as a NEMT provider in Washington

Medicaid provider enrollment in Washington runs through ProviderOne8. HCA's NEMT brokers contract directly with transportation service providers, so a Washington operator contracts with the regional broker for the counties it wants to serve and is paid by that broker rather than billing HCA for the trip2.

Contract with the broker for your counties. HCA's NEMT 101 says the brokers contract directly with transportation service providers and tells a prospective provider to contact the regional broker responsible for the counties where it wants to do business. Under WAC 182-546-5200 the broker and its subcontracted transportation providers must be licensed, equipped and operated in accordance with federal, state and local law and the terms of their contracts, the broker screens its subcontracted providers and their employees against the federal exclusion lists before contracting and on an ongoing basis afterwards, and a provider is paid by the broker only under a subcontract with it.2 HCA's sample broker contract sets the floor for every subcontract: drivers hold a valid driver's license, an abstract of driving record and insurance before serving clients; a new driver or volunteer clears a fingerprint-based Washington State Patrol criminal history check, repeated every three years with a WATCH report in the intermediate years, qualifying them for unsupervised access to children and vulnerable adults; the broker keeps records on each subcontractor's business licenses, certifications, insurance, driver verifications and vehicle inspections; and the subcontract gives the broker access to the provider's records for six years after it ends.

What every trip record needs4

  • The broker's authorization for the trip, obtained before the client travels, or the retroactive authorization requested within two business days of an after-hours urgent care or hospital discharge transportWAC 182-546-6000 makes every non-ambulance trip subject to prior authorization by the broker, and WAC 182-546-5200 tells the provider to follow the broker's after-hours instructions when the broker is closed; the broker then documents the reason for a retroactive authorization in the client's trip record.
  • The client's name and ProviderOne services card number, the pickup point and drop-off point the broker authorized, and the date and time of each one-way tripCMS states that at a minimum all states require the beneficiary's name and Medicaid identifier, the pickup and drop-off locations, the date and time the service was furnished, and the number of miles traveled with the beneficiary in the vehicle. A trip under WAC 182-546-5100 is one-way transportation from the pickup point to the drop-off point.
  • Loaded miles between the authorized points only, because the agency pays nothing for intermediate stops or delays that are not directly related to the approved trip
  • The mode and the level of assistance the broker set for the trip, curb-to-curb, door-to-door, door-through-door or hand-to-hand
  • A note for every no-show and cancellation, since brokers report no-shows where the provider attempted the pickup to HCA each month and verify a sample of completed trips after the factThe sample broker contract requires a documented post-trip verification review on at least one trip in ten, and a biennial desk audit of ten randomly selected trips per subcontractor covering documentation, timeliness, coding and medical justification, with a site visit every other year to confirm the security of client files and manifests.
  • Driver and vehicle files the broker can produce at that audit: license, driving record abstract, insurance, background check dates and vehicle inspection records

Codes and claim format

No HCPCS claim goes to HCA for a brokered trip. A transportation provider is paid by its broker under the subcontract, which sets the rates and the submission format, and the sample broker contract bars a subcontractor from seeking payment from HCA, from the client or from any other contract service provider for a subcontracted trip. The unit the rule and the contract recognize is the trip, one-way from the pickup point to the drop-off point, with meals, lodging, parking, tolls and ferry fees as separate units the broker authorizes.5 HCA publishes separate billing guides and fee schedules for ambulance transportation on its provider billing guides page, for ambulance providers that bill ProviderOne directly; the rule lets a broker subcontract with licensed ambulance providers for non-emergency ground ambulance trips, which are then paid by the broker too. Plain-language explanations of the transport codes and the origin and destination modifiers are on the NEMT billing codes page.

Filing windows

The broker's subcontract sets the deadline for submitting a trip for payment, and HCA's sample broker contract requires the broker to pay its subcontractors within ten calendar days of receiving HCA's reimbursement for allowed trips. HCA's own limit in WAC 182-502-0150, 365 calendar days from the date of service for a claim to reach the agency and be assigned a transaction control number, governs claims billed to the agency, which brokered trips are not.5 A client's own request for reimbursement of a preauthorized trip, meal or lodging must reach the broker within 30 calendar days after the appointment, and after delayed certification or retroactive eligibility a request must be made within 60 calendar days of the eligibility notice and no later than eight months after the date of service.

Common rejections in Washington, and the fix

  • Trip taken without the broker's authorization

    The fixWAC 182-546-6000 requires prior authorization by the broker for every non-ambulance trip, and the broker mails a written denial to a client it turns down. For an urgent care appointment or a hospital discharge when the broker is closed, the provider follows the broker's after-hours instructions and requests retroactive authorization within two business days, or declines the trip. The biller checks each trip for its authorization before it goes on the broker invoice, so an unauthorized trip is caught before it is billed rather than after it is denied.

  • Trip inside three-quarters of a mile, or where a fixed-route bus was available

    The fixWAC 182-546-6200 says the brokers do not pay when the covered service is within three-quarters of a mile of the pickup point, or when fixed-route public transportation is available within three-quarters of a mile walking distance, unless the client's documented and verifiable condition, an inaccessible or unsafe area, or a documented need for specialized transportation such as a portable ventilator or a walker supports an exception. The exception is the broker's to grant, so the biller keeps the broker's exception note with the trip.

  • Second round trip billed on the same day

    The fixCoverage under WAC 182-546-5500 is one round trip per day, except for multiple medical appointments that cannot be reached in one round trip. The biller matches every extra leg to the broker's authorization for it before the trip is submitted.

  • Pharmacy detour or extra stop added to the trip

    The fixThe agency pays no cost of an intermediate stop or delay that is not directly related to the approved trip, and only the broker may authorize a stop, for an immediate subsequent referral or a pharmacy within a reasonable distance of the usual route. A standalone pharmacy trip is limited to one a week per household unless a medical professional documents an urgent need. The biller bills the authorized legs only and flags the rest for the broker.

  • Trip to a provider outside the client's local community

    The fixWAC 182-546-5700 limits clients to a local provider unless the broker authorizes an exception: the service is not available locally, continuity of care for a listed condition, a third-party payer that requires a specific network provider, or a lower total cost to the agency. The broker decides on documentation from the client's providers, so the biller files the broker's exception authorization with the trip.

  • Driver or vehicle file short at the broker's desk audit

    The fixThe sample broker contract has the broker review ten random trips per subcontractor every two years and visit the subcontractor's office in alternate years, and it requires the license, driving record abstract and insurance of every driver, a Washington State Patrol fingerprint check for new drivers repeated every three years, and documentation of vehicle inspections. The biller keeps those dates on the roster and flags a driver whose file is short before that driver's trips are submitted.

  • Subcontractor billed the client, HCA or another contract provider

    The fixEvery subcontract carries HCA's prohibition on seeking payment from HCA, from any of its clients or from any other contract service provider for services performed under the subcontract. A trip the broker denies is corrected and resubmitted or disputed with the broker; it is never billed to the rider.

Remitwright serves Washington transportation providers remotely, inside the dispatch and billing software you already run, with a dedicated NEMT biller. If you are weighing a dedicated biller against billing from dispatch yourself, outsourced NEMT billing, explained sets the two side by side.

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How a dedicated NEMT biller handles broker portals, Medicaid claims, trip reconciliation and denial rework.

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FAQ

Questions from Washington transportation providers

Do we bill HCA or the broker for an Apple Health trip?

The broker. HCA's NEMT brokers contract directly with transportation service providers, and under WAC 182-546-6200 both ambulance and non-ambulance providers must be subcontracted with the broker to be paid by it for non-emergency transportation. HCA pays the broker, and the sample broker contract has the broker pay its subcontractors within ten calendar days of receiving HCA's reimbursement for allowed trips. Nothing about a brokered trip is billed in ProviderOne.

Which broker covers our counties?

HCA's May 2025 list assigns Island, San Juan, Skagit and Whatcom to Northwest Regional Council; King and Snohomish to Hopelink; Pierce, Clallam, Jefferson, Kitsap, Mason, Pacific, Grays Harbor, Thurston and Lewis to Paratransit Services; Clark, Cowlitz, Klickitat, Skamania and Wahkiakum to Community in Motion; Chelan, Douglas, Okanogan, Benton, Columbia, Franklin, Kittitas, Yakima and Walla Walla to People for People; and Ferry, Stevens, Pend Oreille, Lincoln, Grant, Adams, Spokane, Whitman, Garfield and Asotin to Special Mobility Services. A provider that runs across a broker boundary holds a subcontract with each broker.

How do we become a transportation provider in Washington?

Contact the regional broker for the counties you want to serve and sign its subcontract. The rule requires you to be licensed, equipped and operated under federal, state and local law and the terms of the subcontract, and the broker screens you and your drivers against the federal exclusion lists before contracting and on an ongoing basis. Expect the sample contract's driver standards in the subcontract: a valid license, an abstract of driving record and insurance for every driver, a fingerprint-based Washington State Patrol background check for new drivers repeated every three years, and documented vehicle inspections. The broker also gets access to your records for six years after the subcontract ends.

What does a trip record need in Washington?

The broker's authorization and the pickup and drop-off points it approved, the client's name and services card number, the date and time of each one-way leg, the loaded miles between the authorized points, the mode and level of assistance the broker set, and a note for any no-show or cancellation. CMS lists the name, Medicaid identifier, locations, date, time and loaded miles as the minimum every state requires. The broker verifies at least one completed trip in ten after the fact and reviews ten random trips per subcontractor at its desk audit, so the record is what gets a trip through that review.

Can we bill a no-show, a wait, or an extra stop?

WAC 182-546 pays for trips, meals, lodging and the ancillary units a broker authorizes, and nothing in the rule pays for a no-show, so whether your broker pays a no-show or cancellation fee is a term of your subcontract. CMS's provider booklet says claiming loaded mileage for a no-show is billing for services not rendered. A stop the broker did not authorize is not paid at all; a related stop, such as a pharmacy on the usual route or an immediate follow-on referral, is paid only when the broker authorizes it. Your biller bills what the authorization covers and raises the rest with the broker.

How long do we have to submit a trip to the broker?

Your subcontract sets the deadline, and each broker's deadline is tracked separately on the aging list. HCA's 365-day limit in WAC 182-502-0150 applies to claims billed to the agency, which a brokered trip is not. Two other clocks belong to the client rather than to you: a client's own reimbursement request must reach the broker within 30 calendar days after the appointment, and after delayed certification or retroactive eligibility within 60 calendar days of the eligibility notice and no more than eight months after the date of service.

Which codes go on a Washington NEMT claim?

None to HCA. The broker's subcontract sets the rates and the submission format, and the unit is the one-way trip from the pickup point to the drop-off point, with meals, lodging, parking, tolls and ferry fees as separate units the broker authorizes. The subcontract bars billing HCA, the client or any other contract provider for a subcontracted trip. Ambulance providers that bill ProviderOne directly follow HCA's ambulance billing guide and fee schedule, which is a different program from brokered NEMT.

What do you need from us to start billing Washington NEMT?

A signed BAA. Then each broker subcontract with its rate terms and submission rules, a login to each broker's provider portal or invoice process, access to your dispatch and GPS records, your driver roster with license, driving record abstract, insurance and Washington State Patrol check dates, your vehicle inspection dates, and a count of trips per month by broker. Trips already past a broker's deadline go on the first aging list so you know what is recoverable and what is not.

Next step

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Step 1 of 3

What do you bill for?

A little about your volume
How many providers? (Medical practice)

Trips per month? (NEMT)

Active clients? (Home care / home health)

Orders per month? (DME)

How many clinicians? (Behavioral health / therapy)

Claims per month, roughly? (Something else)

What's the biggest problem right now?

Where should we send the review?

Add details (optional)

We work inside your system; this tells us which login to ask for.

Please don't include patient information in this form.

  • No patient data requested
  • No obligation
  • Reply in writing

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