Credentialing is the process by which health plans and organizations verify a provider's qualifications before granting network participation or billing privileges, and a complete document file is the foundation of that review. This checklist groups the materials a credentialing file generally contains — identity and licensure, education and training, work history, liability coverage, and attestations — and notes where an authoritative source such as CAQH, NCQA, or CMS governs a requirement. Because exact document lists, verification standards, expiration windows, and enrollment steps differ by payer, plan, state Medicaid program, and application type, each item flags the variation rather than stating a universal rule and defers to the controlling source and the relevant enrollment application.
Provider identity and NPI Confirm the file contains current government identification consistent with legal name, date of birth, and the National Provider Identifier (NPI). The NPI is issued through the CMS National Plan and Provider Enumeration System, and payers generally require the individual (Type 1) NPI and, for groups, the organizational (Type 2) NPI. Whether additional identity documents are required varies by payer and by state Medicaid program; verify against the specific enrollment application. See the glossary entry for NPI at /resources/glossary/npi. State licensure and certifications Include current state professional license(s), DEA registration where the provider prescribes controlled substances, and any state-controlled-substance registration. Licenses and registrations carry expiration dates and are subject to primary source verification against the issuing authority. Required credentials and which states apply depend on where the provider practices and on each payer's policy, so confirm scope against the payer's requirements rather than assuming a single standard. Education, training, and board status Document medical or professional school completion, internship, residency, fellowship as applicable, and board certification status. These qualifications are typically confirmed through primary source verification with the issuing institution or board. Board certification requirements differ by specialty and by payer; NCQA-accredited plans follow defined verification standards. See primary source verification at /resources/glossary/primary-source-verification and the sibling article at /knowledge-base/credentialing/primary-source-verification-explained. Work history and explanation of gaps Provide a chronological work history covering the period each payer or accrediting standard requires, with written explanation of any gaps. The length of history reviewed and how gaps must be documented vary by payer and by accreditation framework such as NCQA. Enrollment-related coverage gaps are a distinct billing concern covered at /knowledge-base/credentialing/credentialing-and-enrollment-gaps. Malpractice and liability coverage Include the current professional liability (malpractice) insurance certificate showing carrier, policy period, and coverage limits, plus claims history where required. Minimum coverage amounts and the claims-history lookback are set by individual payers, states, and facilities and are not universal, so verify the applicable threshold against the specific application rather than quoting a figure. CAQH profile and attestation Many commercial payers draw credentialing data from a CAQH ProView profile that the provider must keep complete and re-attest on the schedule CAQH sets. Confirm the profile is populated, authorized for the relevant payers, and attested, with supporting documents uploaded. See the CAQH glossary entry at /resources/glossary/caqh and the sibling articles /knowledge-base/credentialing/the-caqh-profile and /knowledge-base/credentialing/maintaining-caqh-and-attestation. Attestation frequency and required fields are governed by CAQH. Medicare enrollment through PECOS and the CMS-855 family For Medicare participation, enrollment is completed through PECOS, the CMS Medicare enrollment system, using the applicable CMS-855 application (for example, the CMS-855I for an individual physician or non-physician practitioner and the CMS-855B for a group or organization). Confirm the correct application type and supporting documentation for the provider's situation. See /resources/glossary/pecos, the sibling article /knowledge-base/credentialing/the-cms-855-application-family, and the CMS-855 application types lookup at /tools/lookup/medicare-enrollment-application-types. Medicaid and commercial payer enrollment materials Assemble the enrollment application and supporting documents for each payer network the provider is joining. Medicaid is jointly funded by federal and state governments and administered by states, so enrollment forms, required documents, and screening steps differ by state; commercial contracting requirements differ by payer. Confirm each payer's or state's current requirements. See sibling articles /knowledge-base/credentialing/medicaid-provider-enrollment and /knowledge-base/credentialing/commercial-payer-contracting, and the payer enrollment readiness checklist at /tools/checklists/payer-enrollment-readiness-checklist. Practice location and group information Include practice location addresses, group tax identification, ownership or managing-control details, and, where enrolling as part of a group, the group's identifiers and reassignment of benefits information. Distinctions between individual and group enrollment affect which documents are needed; see /knowledge-base/credentialing/individual-vs-group-enrollment. The specific data elements required depend on the payer and application type. Revalidation and recredentialing tracking Record effective dates and the next revalidation or recredentialing due date for each network, since credentialing is periodic rather than one-time. Medicare enrollment revalidation cycles and payer recredentialing intervals are set by CMS and by each plan and are not uniform, so track each on its own schedule. See /resources/glossary/revalidation, the sibling article /knowledge-base/credentialing/revalidation-and-recredentialing, and the guide at /resources/guides/manage-recredentialing-and-revalidation.
