Medicare Advantage vs Medicare Supplement in Colorado

A Medicare Supplement (Medigap) works alongside Original Medicare: you can see any doctor in the country who accepts Medicare, pay a higher monthly premium, and have low, predictable costs when you get care. You add a separate Part D plan for drugs. A Medicare Advantage plan replaces Original Medicare with a private plan that usually includes drug coverage and often extras like dental, has lower or $0 plan premiums, and uses networks, copays and a yearly out-of-pocket maximum. In Colorado, a Medigap policy bought outside your first six-month window can require health questions, so the order you choose in matters.

Side by side

When a Medicare Supplement tends to fit

• You want to keep a specific specialist or hospital system and not worry about networks.
• You travel, or split the year between Colorado and another state.
• You have a health condition and want costs you can predict to the dollar.
• You would rather pay more each month than face large bills in a hard year.

When Medicare Advantage tends to fit

• Your doctors are in a local plan network and you are comfortable staying in it.
• You want a lower monthly premium and drug coverage in one card.
• Dental, vision, hearing or fitness benefits matter to you.
• You are generally healthy and comfortable with copays up to a yearly maximum.

What the 2027 market looks like near Brighton

According to the CY2027 CMS Landscape file, Adams County has 36 Medicare Advantage plans from 10 organizations, not counting Special Needs Plans. 33 of them have a $0 Part C premium and 30 have no monthly premium for Parts C and D combined, and in-network out-of-pocket maximums range from $3,300 to $9,850. Weld County has 25 plans from 8 organizations, with maximums from $4,300 to $9,850.

For Medigap, the Colorado Division of Insurance publishes premium charts by company each year. Its guide notes that the same plan letter can vary widely in price; its own example is a Plan G at $150 a month from one company and $250 from another. Pairing a supplement with one of Colorado's 8 standalone Part D plans for 2027 completes that path.

Why the order matters in Colorado

Colorado has no Medigap birthday rule (NAIC chart, as of May 11, 2026). Outside your six-month Medigap Open Enrollment Period and a few guaranteed issue situations, a company can ask health questions and turn you down. Moving from a supplement to Medicare Advantage is easy each fall. Moving from Medicare Advantage back to a supplement may not be.

There are protections. If you join a Medicare Advantage plan when you are first eligible at 65 and leave within 12 months, the federal trial right lets you buy a Medigap policy without health questions. If you dropped a Medigap policy to try Medicare Advantage for the first time and leave within 12 months, you can often get your old policy back. Colorado also guarantees issue if you had Medicaid when you first got Medicare and later lose it.

A worked comparison using 2026 federal figures

Here is an illustration, not a quote. Say you need a knee replacement. On Original Medicare with Plan G, you pay the $283 Part B deductible for the year and nothing else for Medicare-covered care: Plan G pays the $1,736 Part A deductible and your 20 percent Part B coinsurance. You have paid twelve months of premiums whether or not you needed care.

On a Medicare Advantage plan, you pay the plan's hospital copays (often a daily amount for the first several days), surgeon and therapy copays, and you may need prior authorization. Your total for medical care stops at the plan's out-of-pocket maximum, which near Brighton ranges from $3,300 to $9,850 in 2027. In a year with no major care, you may pay very little beyond your Part B premium.

Totaling both paths for one hypothetical 65 year old

To compare the two paths in full, add every piece. This hypothetical is a 65 year old woman who does not smoke. The Medigap premiums come from the Colorado Division of Insurance 2026 to 2027 premium charts, which price Denver ZIP code 80202 (Brighton prices can differ, so ask each company for your ZIP). Plan figures are 2027 Adams County plans from the CMS CY2027 Landscape file. The Part B premium is the 2026 standard amount, because CMS announces 2027 in November.

Travel, snowbirds and second homes

If you spend winters in Arizona or summers with family out of state, the paths behave differently. Original Medicare with a supplement works with any provider in the country that accepts Medicare, so routine care away from Colorado is covered the same way it is at home. Plans G and N also pay 80 percent of emergency care during the first 60 days of a trip outside the U.S., up to the plan limits in the standardized benefit chart.

A Medicare Advantage plan covers emergencies and urgent care anywhere in the U.S., but routine care away from home depends on the plan. An HMO generally will not pay for a routine visit outside its network; a PPO pays out of network at a higher cost. If you will be away for months, ask each plan in writing how it handles routine care, prescriptions by mail and refills in another state.

Questions to answer before you choose

• Are all of my doctors and my hospital in the 2027 network of this exact plan, and do they accept Original Medicare?
• What would a hard year cost me on each path, including premiums, the medical maximum and my drugs?
• Could I afford the Medigap premium at 75 and 80, given the pricing method? (The Colorado charts show Plan G at 75 from $159 to $522 a month for women.)
• How often am I out of state, and for how long?
• Do the dental, vision and hearing extras in a plan replace a cost I would otherwise pay, or are they nice to have?
• If I choose Medicare Advantage now, do I still have a federal trial right if I change my mind in the first 12 months?

A Colorado scenario: changing your mind at 70

Here is a hypothetical that shows why the order matters. Someone joins a $0 premium Medicare Advantage plan at 65 in 2027, likes it for five years, and at 70 develops a condition that needs a specialist outside the network. They can leave Medicare Advantage during the fall window. But they are past the 12-month trial right and past their Medigap window, and Colorado has no birthday rule, so a Medigap company can ask health questions and decline them or apply a pre-existing condition waiting period. If approved, the Colorado chart shows Plan G at 70 from $134 to $382 a month for women and $152 to $428 for men in ZIP 80202.

Run it the other way. Someone buys Plan G at 65 and at 70 decides a Medicare Advantage plan suits them better. They can switch in any fall window without health questions. The asymmetry is the reason I ask people to make the supplement decision deliberately at 65, even if they end up choosing Medicare Advantage.

How I help people decide

I take a commonsense approach. I ask about your doctors, prescriptions, travel and budget, listen to what matters most to you, and only then recommend the type of coverage that fits. I will show you both paths with real numbers, and if a supplement is the right long-term choice I will tell you to lock it in during your window, even if the monthly premium is higher.

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The bottom line

Choose a Medicare Supplement if you value freedom to see any doctor and predictable costs, and can budget a higher monthly premium. Choose Medicare Advantage if your doctors are in network and you prefer a lower premium with extras. In Colorado, make the supplement decision during your first six-month window, because switching back later can involve health questions. Call our Brighton office if you would like both options priced for your doctors and drugs.