Medicaid Provider NPI Lookup

Medicaid credentialing and billing verification requires understanding both the federal NPI system and your state's specific Medicaid enrollment requirements. Unlike Medicare, which uses a centralized enrollment system (PECOS), Medicaid enrollment is managed by each of the 50 states and DC individually. This tool helps you identify providers through NPPES and guides you through state-specific Medicaid verification.

How Medicaid Provider Enrollment Works

Medicaid is jointly funded by federal and state governments but administered by each state independently. Every state has its own provider enrollment system, application forms, eligibility criteria, and fee schedules. Providers who want to bill Medicaid must apply to and be approved by the specific state Medicaid agency in each state where they practice. In states with managed Medicaid (where beneficiaries enroll in Medicaid HMOs), providers may also need to credential separately with each managed care organization in addition to enrolling with the state Medicaid program. This decentralized structure means there is no single lookup database that covers all Medicaid enrollment.

Using NPI to Start Medicaid Verification

The NPI number is the universal provider identifier used in all Medicaid billing transactions nationwide, even though enrollment is state-administered. Every state Medicaid system accepts NPI as the primary provider identifier. Use this tool to confirm a provider's NPPES data — their full legal name, specialty (taxonomy code), current address, and license information — and then cross-reference with the specific state Medicaid portal. Most state Medicaid portals allow lookup of enrolled providers by NPI number and can confirm enrollment status, effective dates, and billing restrictions.

State Medicaid Provider Lookup Resources

Each state operates its own Medicaid provider directory. Examples include: Medi-Cal (California) at medi-cal.ca.gov, Texas Medicaid at tmhp.com, Florida Medicaid at myflorida.com, New York Medicaid at emedny.org, and Illinois Medicaid at HFS.illinois.gov. Most states publish searchable provider directories on their Medicaid agency websites. Some states have contracted with managed care organizations that operate their own provider networks — in those cases, the MCO's provider directory is the relevant lookup resource for credentialing and network verification purposes.

Medicaid vs Medicare Provider Enrollment

Medicare uses PECOS for centralized enrollment — one application, one system. Medicaid uses 51 separate systems (50 states plus DC). This means a provider who practices in multiple states must enroll in each state's Medicaid program separately. Some states participate in interstate compacts or have reciprocity arrangements, but these cover licensing, not Medicaid enrollment. Providers billing dual-eligible patients (those covered by both Medicare and Medicaid) must maintain active enrollment in both PECOS and their state Medicaid system — both will be checked by payers when claims are submitted.

Medicaid Managed Care and Network Credentialing

As of 2024, over 70% of Medicaid beneficiaries are enrolled in managed care plans (Medicaid MCOs). This means that for most Medicaid billing, providers must be credentialed not only by the state Medicaid agency but also by the specific MCOs operating in their area. MCO credentialing typically follows NCQA or URAC standards and may use CAQH for centralized credentialing data. Providers should maintain their CAQH profile and ensure it is current, as MCOs routinely pull CAQH data during network credentialing. NPI verification through NPPES is always the starting point.

Medicaid Provider Types and Enrollment Requirements

Medicaid enrolls various provider types with different requirements: physicians (MDs, DOs), non-physician practitioners (NPs, PAs, CNMs, CRNAs), dentists, pharmacies, hospitals, nursing facilities, home health agencies, behavioral health providers, and medical transportation companies. Each provider type has specific enrollment criteria, background check requirements, and site inspection requirements that vary by state. Some states use risk-based enrollment screening under the Affordable Care Act, classifying providers as limited, moderate, or high risk with proportionate screening requirements.

Medicaid Re-enrollment and Revalidation

Federal regulations require states to revalidate Medicaid provider enrollment at least every five years, or every three years for high-risk providers. Many states conduct more frequent revalidation cycles. During revalidation, states verify that providers continue to meet enrollment requirements — active licensure, no exclusions from federal healthcare programs, valid practice locations, and current background checks. Providers who fail to complete revalidation on time risk disenrollment, which prevents them from billing Medicaid and may affect their ability to serve existing Medicaid patients.

Federal Medicaid Exclusions and LEIE

The Office of Inspector General (OIG) maintains the List of Excluded Individuals and Entities (LEIE), a federal exclusion database that applies to both Medicare and Medicaid. Providers on the LEIE cannot receive payment from any federally-funded healthcare program, including Medicaid. States are required to check the LEIE during enrollment and revalidation, and many check it monthly. Providers should monitor their own LEIE status and ensure their employees are not excluded. The LEIE is searchable by NPI, name, or SSN/EIN at oig.hhs.gov/exclusions.

Frequently Asked Questions

Other Lookup Tools