How to apply for Colorado Medicaid

Last verified: June 2026

How to apply for Health First Colorado

The Colorado Department of Health Care Policy and Financing (HCPF) and county departments of human services share responsibility for Health First Colorado applications. Per HCPF, there are four ways to apply:

What you need to apply

Per HCPF's application guidance, Colorado verifies identity, residency, income, and citizenship or immigration status. Gather the following before starting:

• Full legal name, date of birth, and Social Security number for each applicant
• Proof of Colorado residency — utility bill, lease, bank statement, or official mail at your current address
• Income documentation — pay stubs from the past 30 days, employer letter, or most recent tax return if self-employed
• Immigration documents for non-citizen applicants (green card, visa, I-94, or work authorization)
• Current health insurance information for household members already covered
• For long-term services and supports applications: physician documentation of functional need, plus financial records

How long Health First Colorado takes to process

Under federal regulations (42 CFR 435.912), Colorado must decide most Health First Colorado applications within 45 days. Disability-based applications can take up to 90 days. Check your application status anytime at peak.colorado.gov or in the PEAK app.

If approved, coverage begins the first day of the month you applied. Pregnant applicants may qualify for retroactive coverage going back three calendar months. After approval, HCPF assigns you to a Regional Accountable Entity (RAE) for care coordination. You can change your primary care provider through PEAK or by calling the Member Contact Center.

What documents you'll need

Gather these before starting your application. Having them ready prevents delays caused by missing information requests, which can add weeks to the review.

• Proof of identity — driver's license, state ID, passport, or birth certificate
• Proof of residency in Colorado — utility bill, lease, or official mail with your address
• Social Security numbers for all household members applying
• Proof of income for the past 30 days — pay stubs, employer letter, or benefit award letters
• Tax filing information if self-employed — prior year return is typically acceptable
• Immigration documents if applicable — green card, visa, or I-94 arrival/departure record
• Health insurance information if you currently have coverage through an employer or other source

Not every document is required for every applicant. The application will specify what Health First Colorado (Colorado Medicaid) needs based on your household composition.

The application process, step by step

1. 1

   Gather your documents

   Collect proof of identity, residency, income, and household composition before you start. Having everything ready means you can complete the application in one sitting.

2. 2

   Submit the application

   Apply through your preferred method — online is fastest. The application asks about income, household size, citizenship status, and whether anyone in the household has other insurance. Answer completely to avoid requests for more information.

3. 3

   Respond to any follow-up requests

   Health First Colorado (Colorado Medicaid) may request additional documents or clarification. Respond promptly — delays in providing information can pause or restart the review clock.

4. 4

   Receive your eligibility notice

   The agency will send a written notice of approval or denial. If approved, the notice will state your coverage start date and what benefits you're eligible for.

What to expect after you apply

Under 42 CFR 435.912, states must process most Medicaid applications within 45 days of receipt. Applications based on disability take up to 90 days. If Colorado hasn't issued a decision by those deadlines, the agency must notify you in writing with the reason for delay.

Medicaid coverage typically starts on the first day of the month in which you applied, assuming you're determined eligible. In some cases — particularly for pregnant women — retroactive coverage going back up to three months may apply if you received qualifying medical services during that period.

Keep your contact information updated while your application is pending. A notice sent to an old address counts as received.

If your application is denied

A denial notice must state the specific reason and your right to appeal. You have the right to request a fair hearing — typically within 90 days of the denial notice — where you can present evidence and contest the decision before an impartial hearing officer.

Common denial reasons include income above the limit, failure to verify documents within the required timeframe, or a missing signature. Many denials can be resolved by reapplying with the correct documentation.