What is Credentialing?
Also called: provider credentialing · payer enrollment · provider enrollment
The financial exposure is front-loaded and easy to underestimate. A provider seeing patients while enrollment is pending is generating receivables that may never be collectible, depending on whether the payer permits retroactive effective dates.
Most commercial credentialing runs through CAQH ProView, where a lapsed attestation silently stalls applications. Medicare enrollment runs through PECOS and carries its own revalidation cycle.
Where Vizora handles this
Primary sources
Where "Credentialing" is defined by the bodies that set the rules, rather than by us.
- PECOS Medicare enrollment (opens in a new tab)
Centers for Medicare & Medicaid Services — Where Medicare provider enrollment is filed and maintained. Revalidation deadlines missed here stop payment outright.
- CAQH ProView (opens in a new tab)
CAQH — The credentialing profile most commercial payers pull from. Attestation lapses here are the most frequent cause of stalled commercial credentialing.
- NPI Registry (NPPES) (opens in a new tab)
Centers for Medicare & Medicaid Services — Public lookup and management for National Provider Identifiers. A stale NPPES record is a quietly common cause of enrollment and claim rejections.
Last reviewed August 20, 2026
Related terms
Timely Filing
Timely filing is the deadline by which a payer must receive a claim. Limits commonly range from 90 days to one year from the date of service, vary by payer and contract, and are shorter for secondary claims. A claim denied for timely filing is generally unappealable and unbillable to the patient.
NPI
A National Provider Identifier is the 10-digit identifier required on all HIPAA standard transactions. Type 1 identifies an individual provider; Type 2 identifies an organization. Both usually appear on a claim — the rendering provider as Type 1, the billing entity as Type 2.
Out-of-Network
Out-of-network describes a provider with no contract with a patient's payer. Without a contracted allowed amount the payer applies its own reimbursement methodology, patient cost-sharing is higher, and federal No Surprises Act protections restrict what may be balance-billed in emergency and certain facility-based situations.
More in Compliance
Find out what your denials are costing you
A free billing audit reviews your denial rate, AR aging and clean claim rate against industry benchmarks. Takes about two minutes to request. No sales pitch.
No setup fees · You pay when we collect · Pricing from 3% of net collections