Colorado has roughly a million Medicare enrollees, with Medicare Advantage penetration around 45–50%, roughly in line with the US average.1 The practical Medicare experience depends sharply on where in Colorado your parent lives: Denver metro has dozens of MA plans competing; rural Western Slope communities may have only a handful or operate effectively as Original Medicare markets.
What Medicare covers, and what it doesn’t
Medicare is health insurance. It is not long-term-care insurance.
What Medicare does cover:
- Part A (Hospital). Inpatient stays, skilled nursing rehab for up to 100 days after a qualifying hospital admission, hospice, and limited home health.
- Part B (Medical). Doctor visits, outpatient procedures, durable medical equipment, mental health, preventive care, ambulance.
- Part D (Drugs). Prescription drug coverage.
What Medicare does not cover:
- Assisted living (any state, any setting)
- Memory care
- Custodial nursing-home care beyond the 100-day rehab window
- Long-term in-home aide hours
- Routine dental, vision, or hearing in Original Medicare
Original Medicare vs. Medicare Advantage in Colorado
Roughly half of Colorado Medicare-eligibles are on Medicare Advantage, with penetration highest in Denver, Aurora, Lakewood, and the inner suburbs. Mountain and Western Slope communities skew toward Original Medicare because MA network density is lower.2
When Original Medicare + Medigap usually beats Advantage
- Your parent lives in a mountain or Western Slope community where MA networks are thin. In-network specialist access may require travel to Denver.
- Your parent travels or spends part of the year out of state. Original Medicare works nationally; MA plans are network-bound.
- Your parent has a complex condition and wants unrestricted specialist access.
- Your parent can afford the Medigap premium — Plan G in Colorado typically runs $140–$280/month.
When Advantage usually beats Original Medicare
- Your parent lives year-round in Denver, Boulder, Colorado Springs, or another Front Range metro with broad MA network density.
- The total of (Part B premium + Medigap + Part D) exceeds your parent’s budget, and a $0-premium Advantage plan is available.
- Your parent values the extras — dental, vision, hearing, OTC allowances — that many MA plans bundle in.
Medigap in Colorado
If your parent chooses Original Medicare, they will almost certainly also want a Medigap policy. Medigap plans are federally standardized. Colorado-specific wrinkles:
- Colorado is an age-rated state. Premiums rise as your parent ages.
- Guaranteed issue applies during the 6-month Medigap Open Enrollment Period, beginning when your parent turns 65 and is enrolled in Part B. Outside that window, insurers may use medical underwriting.
- Colorado does not have an annual Medigap switching window. Once chosen, switching can require medical underwriting.3
Medicare Savings Programs in Colorado
Low-income seniors may qualify for federal MSPs, administered in Colorado through Health First Colorado:
- QMB (Qualified Medicare Beneficiary). Pays Part A and Part B premiums, deductibles, and coinsurance.
- SLMB (Specified Low-Income Beneficiary). Pays Part B premium only.
- QI (Qualifying Individual). Pays Part B premium. First-come first-served annual funding.
Annual Enrollment Period
Medicare AEP runs from October 15 through December 7each year. Use Medicare.gov’s Plan Finder to compare options by ZIP code, prescriptions, and preferred providers.4
Where to get free help in Colorado
Colorado SHIP is administered by the Colorado Division of Insurance with support from the Colorado Gerontological Society and other partners. Counselors statewide provide free, unbiased Medicare counseling. Call 1-888-696-7213.
For Medicaid-related questions where Medicaid and Medicare interact, see our Colorado Medicaid guide.