Credentialing in Colorado

A carrier "may not deny a claim for a medically necessary covered service provided to a covered person" where the service is a covered benefit and was delivered by a participating physician in the network. Directory upkeep runs both ways: the carrier must correct directory discrepancies "within thirty calendar days after receiving a report of the discrepancy," while the physician must report any change of name, address, telephone number, business structure or tax identification number "within fifteen business days after making the change." That 15-day duty is easy to miss during a practice move or a TIN change.

Colorado General Assembly, Senate Bill 21-126 as enacted (C.R.S. 10-16-705.7) · checked Jul 2026

Colorado gives carriers 60 days and counts them in calendar days, not business days. A carrier "shall conclude the process of credentialing an applicant within sixty calendar days after the carrier receives the applicant's completed application," and must then give written or electronic notice of the outcome "within ten calendar days after the conclusion of the credentialing process." Read the scope before relying on it: the section applies to physicians, defined as those licensed under Article 240 of Title 12, so it does not carry over to behavioral health or allied clinicians.

Colorado General Assembly, Senate Bill 21-126 as enacted (C.R.S. 10-16-705.7) · checked Jul 2026

This is the provision worth knowing in Colorado, and it has no real equivalent elsewhere. A carrier must issue a written or electronic receipt within seven calendar days of getting an application. If it takes a completed application and misses that receipt, the carrier "shall consider the applicant a participating physician, effective no later than fifty-three calendar days following the carrier's receipt of the application." Participation is the penalty for the carrier's own administrative silence, so keep dated proof of what you sent and when.

Colorado General Assembly, Senate Bill 21-126 as enacted (C.R.S. 10-16-705.7) · checked Jul 2026

A carrier must "promptly determine whether the application is complete," and where it is not, must notify the applicant in writing or electronically "within ten calendar days after the date the carrier received the application." The notice "must describe the items that are required to complete the application," so a bare rejection without an itemised list does not satisfy the statute.

Colorado General Assembly, Senate Bill 21-126 as enacted (C.R.S. 10-16-705.7) · checked Jul 2026

For dual-eligible members, behavioral health services delivered by a pre-licensed or unlicensed practitioner under a Medicare-enrolled Rendering Provider skip Medicare and go straight to the MCE (RAE), carrying the HO modifier in the first available position to flag that the performing practitioner is not Medicare-eligible. Caution: the same HCPF page says LPCs, LMFTs and LACs serving Medicare members must enroll as Medicare providers 'effective April 1' with NO year stated, verify the year before relying on it.

HCPF Behavioral Health Policies page via kb/states/co.md · checked Jul 2026

Colorado's FFS Behavioral Health Billing Manual requires CMS-1500 field 24J to carry the NPI of the individual who actually performed the service. It cannot be a group or clinic NPI. Since candidates cannot enroll, the licensed supervisor-as-rendering pattern holds on the FFS side too.

HCPF FFS Behavioral Health Benefit Billing Manual (May 2026) via kb/states/co.md · checked Jul 2026

HCPF's supervision policy caps a licensed clinician at 8 supervisees at any one time with at least 1 hour per week available per supervisee; oversight minimums run 1 hour of rendering-provider oversight per 40 hours of billable service by a pre-licensed clinician (1 per 20 for unlicensed professionals), with annual attestation to each RAE and the organization running monthly OIG+SAM exclusion checks. A separate bridge rule lets an already-licensed, Medicaid-enrolled clinician awaiting RAE credentialing bill under a supervising provider for up to 90 days.

HCPF Supervision Policy for Medicaid Billable BH Services via kb/states/co.md · checked Jul 2026

Colorado's pre-licensed clinicians and unlicensed professionals cannot independently deliver Medicaid-reimbursable behavioral health services, their work must be billed under a Rendering Provider: a licensed, Colorado-enrolled practitioner (licensed psychologist, LBHC, physician, osteopath, PA, or NP). HCPF's RPO FAQs close the door: only a Medicaid-enrolled provider can submit a claim, and services by unlicensed or pre-licensed staff must be billed under the overseeing Rendering Provider's NPI. Colorado has no Washington-style associate license, DORA candidates (LPCC, SWC, LSW, MFTC, PSYC, ADDC) cannot enroll. The exact opposite of Washington.

HCPF BH Rendering Provider Oversight Policy via kb/states/co.md · checked Jul 2026