Colorado’s Medicaid program (Health First Colorado) operates through the Accountable Care Collaborative (ACC), a unique model that separates behavioral health coordination from physical health managed care — requiring providers to navigate two distinct credentialing layers.
What Is the interChange Provider Web Portal?
The interChange Provider Web Portal is Colorado’s centralized platform for all Health First Colorado (Medicaid) provider enrollment, operated by the state’s fiscal agent. All initial enrollments, re-enrollments, and revalidations flow through interChange.
Step-by-Step Colorado Medicaid Enrollment
Colorado enrollment requires interChange registration followed by separate credentialing with both RAEs (behavioral health) and physical health MCOs.
Create an interChange Portal Account
Register at the interChange portal with your NPI, Tax ID, and contact information. Colorado uses a standard provider type classification that must match your NPI taxonomy code.
Complete Application Sections
Enter demographics, Colorado license information, specialty designations, practice locations, ownership disclosures, and billing details. The portal validates each section sequentially.
Upload Required Documents
Upload Colorado state license, NPI confirmation, W-9, IRS EIN documentation, professional liability insurance, DEA (if prescribing), voided check for EFT, and ownership disclosure forms.
Sign Provider Agreement and Submit
Sign the Health First Colorado provider agreement electronically. Save your confirmation number. Clean applications process in 30–45 days.
Credential with RAEs and/or Physical Health MCOs
After interChange approval, credential separately with the Regional Accountable Entity (RAE) and physical health MCO in your service area. These are independent processes — initiate them simultaneously to save time.
The Accountable Care Collaborative (ACC): Two Layers Explained
Colorado’s ACC separates behavioral health coordination from physical health managed care, creating two distinct credentialing requirements that most out-of-state providers miss.
| Layer | Entities | Function | Credentialing Impact |
|---|---|---|---|
| Regional Accountable Entities (RAEs) | 7 regional entities statewide | Manage behavioral health services, care coordination, and referral networks | Must credential to provide behavioral health services or receive care coordination referrals |
| Physical Health MCOs | 2 statewide MCOs | Handle physical health managed care claims and authorizations | Must credential for physical health managed care member panels |
A provider who only enrolls through interChange without credentialing with both layers will experience claim denials for behavioral health services and potentially delayed payments for physical health services.
✔ Parallel Strategy: Initiate your RAE credentialing on the same day you submit your interChange enrollment. The RAE process runs 45–60 days independently and can be parallelized to avoid sequential delays.
2026 Pharmacy Vendor Transition: MedImpact
In 2026, Colorado transitioned Fee-for-Service pharmacy claims processing and prior authorizations from the legacy system to MedImpact Healthcare Systems.
Impact on pharmacy providers:
- All pharmacy billing configurations must be updated for MedImpact’s processing system
- Prior authorization workflows now route through MedImpact instead of the legacy fiscal agent
- Pharmacy providers who did not update their enrollment records are experiencing systematic claim rejections
- Verify your MedImpact registration status immediately after receiving interChange approval
⚠ Pharmacy Alert: If you are a pharmacy provider enrolling in Colorado in 2026–2026, you must verify MedImpact registration after interChange approval. Claims submitted through the legacy system are no longer processed.
Frequently Asked Questions
What is the difference between RAEs and MCOs in Colorado?
RAEs manage behavioral health and care coordination regionally. Physical health MCOs manage medical claims statewide. They are separate entities requiring separate credentialing.
How long does Colorado Medicaid enrollment take?
interChange processing takes 30–45 days. RAE credentialing runs 45–60 days (can be parallelized). Total: 45–90 days with parallel applications.
Does the MedImpact transition affect non-pharmacy providers?
No. The MedImpact transition only affects pharmacy providers submitting FFS pharmacy claims and prior authorizations. Medical providers are not impacted.
Need Help With Colorado Medicaid Enrollment?
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