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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

8 Medicare dates people in Casper should know for 2027

By Jacob Silver. Reviewed November 10, 2026.

These are the dates that decide when you can join or change a Medicare plan in Natrona County, each with its source.

  1. Mid-October to early December (October 15 through December 7). The yearly open season: pick up, trade or leave a plan, effective New Year's Day.[2]
  2. December 31, 2026. UnitedHealthcare's Medicare Advantage plans end in Natrona County.[5]
  3. December 8 through February's final day. Extra time if your plan was dropped for 2027.[3]
  4. New Year's Day through March 31. Medicare Advantage members may change once more.[2]
  5. Seven months around your 65th birthday. Three months before the month, the month, and three after.[9]
  6. Eight months after a job or its insurance ends. Your time to sign up for Part B without a penalty.[10]
  7. Two full months after a move. Your time to switch plans if you leave your plan's area.[3]
  8. 63 days after coverage ends. The limit to apply for a Medigap policy when you have a right to one.[11]

Ready to look at plans?

Medicare in Casper: the full guide

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: Joining a health or drug plan
  2. Medicare.gov: Special Enrollment Periods
  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: When does Medicare coverage start?
  6. Medicare.gov: Working past 65
  7. Medicare.gov: Medigap, your right to buy a policy when coverage ends