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Casper, WYO

A private guide. Not a government website: not connected with or endorsed by the State of Wyoming, the U.S. government or the federal Medicare program.

CASPER, WYOMING

What is a Medicare supplement plan, and how does someone in Casper get one?

By Jacob Silver. Reviewed November 10, 2026.

A Medicare supplement policy, also called Medigap, is private insurance that pays part of what Original Medicare leaves to you, such as deductibles and coinsurance.[18] Buy it in the six months that begin when you are 65 or older and enrolled in Part B; in that stretch no insurer may refuse you or raise the price over your health.[1]

Why it matters in Wyoming

Nearly half of the people on Medicare in Wyoming hold a supplement, the highest share of any state.[21] In Natrona County, where Medicare Advantage drops to 3 plans from one insurer for 2027, many people will weigh a supplement instead.[5]

What a supplement does and does not do

Plans have letters, and the letters are the same everywhere

A Plan G from one company has the same benefits as a Plan G from another. The price is the only difference.[18] Plans C and F are closed to anyone new to Medicare since January 1, 2020; Plan G has the same benefits except the Part B deductible.[18][19]

After the first six months

An insurer may ask health questions and can say no. The exception is a guaranteed-issue right, for example because your Medicare Advantage plan is ending.[1][11] Wyoming adds a yearly window on your birthday for people who already have a supplement. See how the birthday window works.

Ready to look at plans?

Written by Jacob Silver for July Blue Sky LLC, a planned insurance agency that is not yet licensed. Nothing on this page enrolls anyone, and this page does not recommend a plan. We do not offer every plan in your area.

Not connected with or endorsed by the U.S. government or the federal Medicare program.

Sources

  1. Medicare.gov: Medigap, get ready to buy
  2. Medicare.gov: Understanding Medicare Advantage plans
  3. CMS: CY2027 Landscape file (202611, data updated November 1, 2026), Downloads on Prescription Drug Coverage
  4. Wyoming Senior Citizens, Inc.: WSHIIP offices
  5. Medicare.gov: Medigap, your right to buy a policy when coverage ends
  6. Medicare.gov: Medicare Supplement Insurance, an overview (publication 11575)
  7. Medicare.gov: Compare Medigap plan benefits
  8. CSG Actuarial: Medicare Supplement share of Medicare lives by state, from NAIC data