Medicare in Southeast Idaho: Idaho Falls, Pocatello, Rexburg and the Border Valleys

Why state lines matter here

Southeast Idaho borders both Utah and Wyoming, and care moves across both lines. Franklin County sits just north of Utah's Cache Valley, so some Preston-area residents see doctors in Logan. Bear Lake County touches both Utah and Wyoming. And people from Wyoming's Star Valley regularly come the other way, to Idaho Falls and Pocatello, for specialists.

For Medicare, that cross-border pattern is the single most important thing to plan around. The right coverage for someone who sees every doctor in Idaho Falls can be the wrong coverage for someone whose cardiologist is in Logan.

Original Medicare with Medigap vs. Medicare Advantage

Original Medicare works with any doctor or hospital in the country that accepts Medicare. Pair it with a Medicare Supplement (Medigap) policy and a Part D drug plan, and your coverage works the same in Idaho Falls, Logan, Jackson or anywhere else, with no network and no referrals. The trade-off is a higher monthly premium.

Medicare Advantage plans bundle hospital, medical and usually drug coverage, often with lower premiums and a yearly out-of-pocket cap. But they're built on networks, and they're approved county by county. A plan available in Bonneville County may not be offered in Bear Lake County, and a plan that includes Idaho Falls providers may treat a Logan or Salt Lake City specialist as out of network. Some PPO plans pay part of out-of-network care; many HMO plans cover little beyond emergencies and urgent care outside the network.

Neither structure is right for everyone. What matters is matching the structure to where you actually get care. Our Medicare Supplement guide explains the trade-offs in more depth.

A checklist before you choose

Before you compare any plan, write down the facts it has to fit. Plan finders and agents can only check what you tell them.

• Every doctor and specialist you see, with the city and state where you see them.
• Your hospital of choice, and the one you'd likely go to for surgery or a specialist stay.
• Your prescriptions, doses and preferred pharmacy (including mail order).
• Any regular travel, such as winters in Arizona or visits to family out of state.
• Whether a doctor across the Utah or Wyoming line is someone you'd keep no matter what.

Idaho rules that help

Idaho has two Medigap rules worth knowing. First, the birthday rule: if you already have a Medigap policy, you get 63 days each year, starting on your birthday, to switch to similar or lesser coverage with no health questions. Our birthday-rule guide walks through it. Second, Medigap policies sold in Idaho after February 28, 2022 are community-rated, so the premium doesn't depend on your age.

If you're on Medicare before 65 because of a disability, Idaho also requires companies to offer Medigap during your Initial Enrollment Period or a guaranteed-issue period, at up to 150% of the age-65 premium. See our under-65 guide.

Working past 65 in Idaho Falls or Pocatello

Plenty of people in the region keep working past 65, including at large employers such as Idaho National Laboratory in Idaho Falls. If you or your spouse are still working and covered by a group health plan from an employer with 20 or more employees, you can usually delay Part B without a penalty. When the job or the coverage ends, you get an eight-month Special Enrollment Period to sign up for Part B.

One timing detail catches people out. Your one-time, six-month Medigap Open Enrollment Period starts the first month you have Part B and are 65 or older. If you start Part B while you're still on your employer's plan, that Medigap window can open and close before you need it. If you plan to keep working, talk with your benefits office about how its plan works with Medicare before you sign up for Part B. Smaller employers (under 20 employees) are different: Medicare usually pays first, so you generally need Parts A and B at 65.

The enrollment calendar

Medicare's dates are federal, so they're the same in Idaho as everywhere: a seven-month Initial Enrollment Period around your 65th birthday; Open Enrollment from October 15 to December 7 to change Medicare Advantage or Part D plans for January 1; and the Medicare Advantage Open Enrollment Period from January 1 to March 31, when people already in an Advantage plan can make one change. Plan lists change every year, so it's worth reviewing your Annual Notice of Change each fall, especially if your doctors are near a state line.

Free and no-cost help

SHIBA, the Idaho Department of Insurance's Senior Health Insurance Benefits Advisors program, offers free, unbiased Medicare counseling at 1-800-247-4422. Medicare.gov and 1-800-MEDICARE (TTY 1-877-486-2048) are the official federal resources.

For Idaho residents, Eric Jenkins is licensed in Idaho and meets by phone or video, at no cost to you: (702) 249-0514. If you live in Wyoming or Utah and get care in Idaho, Jordan Jenkins is licensed in your state and can check how plans treat your Idaho doctors; see our Afton page for Star Valley. Start with our Idaho Medicare page or the Idaho FAQ.