A newly hired physician or a practice adding a service line usually asks the same question: how long until we can bill this payer? The honest answer is that provider credentialing timelines are not uniform across Aetna, Cigna, UnitedHealthcare/Optum, and Medicare — each runs its own internal review cycle, on its own clock, against its own completeness standard. Understanding where those clocks diverge, and where CAQH ProView and NCQA standards actually help, keeps a practice from budgeting the wrong number of weeks against a new provider’s start date.
Why Credentialing Timelines Vary by Payer
Every commercial payer runs the same broad sequence — application intake, primary source verification of licensure and education, malpractice and sanctions review, committee approval, then contracting and effective-date assignment — but each plan sets its own internal service-level targets on top of that sequence. A complete, error-free application submitted through an up-to-date CAQH ProView profile moves through this sequence far faster than one with a lapsed license verification or a missing malpractice face sheet, which is the single biggest variable practices control directly.
Aetna, Cigna, and UnitedHealthcare/Optum Side by Side
Reported timelines vary by source and by specialty, but the ranges below reflect what practices commonly see once a credentialing packet is complete and a contract is in place.
| Payer | Typical Credentialing Window | Recredentialing Cycle |
|---|---|---|
| Aetna | 60–90 days from a complete packet; the full path from initial request to effective date commonly runs 90–120 days once panel review and contracting are included | Every 3 years, with CAQH re-attestation required every 120 days |
| Cigna | 60–90 days typical, though completeness and document turnaround can push some files to 30–45 days on the fast end or closer to 90 on the slow end | Every 3 years, with CAQH re-attestation similarly expected around every 120 days |
| UnitedHealthcare / Optum | Generally 90–120 days; UnitedHealthcare’s own published target is up to 45 calendar days for a clean file, while OptumCare has cited a 3–6 month range for its network | Auto-initiated as a provider approaches the 3-year mark; a current CAQH attestation maintained every 90 days can reduce additional back-and-forth |
The spread inside each row matters more than the headline number. A payer’s fastest published figure assumes a CAQH profile that is fully attested, a malpractice history with no gaps, and no specialty-specific supplemental forms outstanding — conditions that describe a minority of first submissions, not the average one.
Where Medicare Enrollment Diverges from Commercial Payers
Medicare enrollment does not run through CAQH ProView at all. It is a separate federal process handled through its own enrollment system, governed by its own documentation and revalidation requirements rather than the payer-specific re-attestation cycles that apply to Aetna, Cigna, and UnitedHealthcare. Practices that treat Medicare as "just another payer" on the same CAQH-driven timeline are the ones most likely to be surprised when the Medicare file is still open after the commercial payers have already loaded the provider.
How CAQH ProView and NCQA Standards Shape the Clock
CAQH ProView is the mechanism that lets a provider enter licensure, education, work history, and malpractice data once and authorize multiple health plans to pull from that single, standardized profile instead of re-collecting it plan by plan. That does not shorten a payer’s committee review cycle, but it removes the most common source of delay: incomplete or inconsistent source data. NCQA credentialing standards, which most commercial payers align to, require primary source verification to be completed within 120 days for full accreditation review and 90 days for certification, and require recredentialing at least once every three years. Those NCQA windows are the ceiling payers design their internal targets against — a plan advertising a 45-day turnaround is beating the NCQA standard, not just meeting it.
What Keeps a File Moving
- Attest on schedule, not on reminder. A CAQH profile left un-attested past its 120-day window reverts to an inactive status that payers cannot pull from, restarting delays that have nothing to do with the payer itself.
- Match every credential to every application. A license number, NPI, or malpractice carrier that does not match exactly across the CAQH profile and the payer-specific application is a common trigger for a returned, incomplete file.
- Track contracting separately from credentialing. A provider can be fully credentialed and still not billable if the underlying contract or fee schedule addendum has not been executed — the two processes run in parallel, not in sequence, at most payers.
- Confirm the Medicare and CAQH timelines independently. Because Medicare enrollment does not draw from CAQH, a practice tracking only its CAQH attestation status can miss a stalled Medicare file entirely.
None of this replaces legal or compliance advice specific to a practice’s payer contracts — the ranges above are general industry timelines, not a guarantee from any specific plan. What a practice can control is the completeness and consistency of its own submitted data, which remains the single largest lever over how long any provider credentialing timeline actually runs, regardless of which payer is on the other end of the file.