How to become a Medicaid provider in Maine
To bill Maine Medicaid, enroll through MIHMS Health PAS Online Portal — Provider Enrollment Application (PEA) via Trading Partner Account (moving to the new 'MaineCare Partner Portal' in late September 2026), run by Gainwell Technologies. The process has 6 steps, listed below with the documents the state asks for.
- Enrollment portal
- MIHMS Health PAS Online Portal — Provider Enrollment Application (PEA) via Trading Partner Account (moving to the new 'MaineCare Partner Portal' in late September 2026)
- Steps
- 6
- Documents
- 6
- Plans listed
- —
On this page
Maine Medicaid enrollment at a glance
To bill Maine Medicaid, enroll through MIHMS Health PAS Online Portal — Provider Enrollment Application (PEA) via Trading Partner Account (moving to the new 'MaineCare Partner Portal' in late September 2026), run by Gainwell Technologies. The process has 6 steps, listed below with the documents the state asks for.
- Program
- MaineCare (Office of MaineCare Services, Maine DHHS)
- Fiscal agent
- Gainwell Technologies (MaineCare provider enrollment vendor/MIHMS)
- Application fee
- MaineCare charges the fee to providers that are newly enrolling, revalidating or adding a practice location, unless exempt, paid by debit or credit card in the Trading Partner Account; its fee spreadsheet lists the provider types that pay. Home health agencies and DME suppliers must also post a surety bond at enrollment, revalidation and new locations. Federal rule (42 CFR 455.460): the state must collect the CMS application fee from institutional providers that are newly enrolling or re-enrolling; individual physicians and non-physician practitioners are exempt, as are providers already enrolled in (or that already paid the fee to) Medicare or another state's Medicaid/CHIP. CMS set the fee at $750 for calendar year 2026.
- Fingerprinting
- MaineCare runs automated criminal history checks on all providers and on 5%+ owners, board members, managing employees and rendering providers. Federal rule (42 CFR 455.434, 455.450(c)): providers the state places in the 'high' categorical risk level, and anyone owning 5% or more of such a provider, must submit fingerprints for a criminal background check.
- Site visit
- MaineCare does site visits on revalidating provider locations assigned moderate or high risk; risk is set by provider type and service-location specialty (Risk Category Assignments, May 2024). Federal rule (42 CFR 455.432, 455.450(b)-(c)): the state must do site visits before and after enrollment for providers in the 'moderate' or 'high' risk levels, and any enrolled provider must allow unannounced on-site inspections.
- Revalidation
- MaineCare revalidates at least every five years (every three years for DME providers) or whenever it asks; it has a federally required 2026-2028 off-cycle revalidation plan. Federal rule (42 CFR 455.414): every enrolled provider must be revalidated at least once every 5 years.
- Provider manual
- Provider manual
Steps
- Read MaineCare's Overview of the Steps to Enroll and the Enrollment Checklist
- Create a Trading Partner Account on the Health PAS Online Portal
- Complete the online Provider Enrollment Application (PEA) in MIHMS
- Disclose SSNs and dates of birth for 5%+ owners, board members, managing employees and rendering providers
- Pay the application fee by card and post a surety bond (HHA/DME) if required
- Complete a site visit if moderate/high risk
Documents the state asks for
Joining managed-care plan networks
- Credentialing
- MaineCare's provider pages describe no capitated Medicaid MCO program or plan networks. Its value-based programs (such as Accountable Communities, groups of providers that share savings or losses) sit on top of MaineCare's own provider enrollment, so providers enroll once with MaineCare. Centralized credentialing: not applicable (no MCO networks described).
Frequently asked questions
How do I become a Medicaid provider in Maine?
To bill Maine Medicaid, enroll through MIHMS Health PAS Online Portal — Provider Enrollment Application (PEA) via Trading Partner Account (moving to the new 'MaineCare Partner Portal' in late September 2026), run by Gainwell Technologies. The process has 6 steps, listed below with the documents the state asks for.
Is there an application fee to enroll in Maine Medicaid?
MaineCare charges the fee to providers that are newly enrolling, revalidating or adding a practice location, unless exempt, paid by debit or credit card in the Trading Partner Account; its fee spreadsheet lists the provider types that pay. Home health agencies and DME suppliers must also post a surety bond at enrollment, revalidation and new locations. Federal rule (42 CFR 455.460): the state must collect the CMS application fee from institutional providers that are newly enrolling or re-enrolling; individual physicians and non-physician practitioners are exempt, as are providers already enrolled in (or that already paid the fee to) Medicare or another state's Medicaid/CHIP. CMS set the fee at $750 for calendar year 2026.
How often must Maine Medicaid providers revalidate?
MaineCare revalidates at least every five years (every three years for DME providers) or whenever it asks; it has a federally required 2026-2028 off-cycle revalidation plan. Federal rule (42 CFR 455.414): every enrolled provider must be revalidated at least once every 5 years.