Medicare Advantage

Medicare in Watertown: 9 Plan Options for 2026

Watertown, S.D. — If you're turning 65 in Watertown, or you already have Medicare and want a fresh look for 2026, the first question is usually the simplest: how many choices do I actually have?

Here's the short answer for people living in and around Watertown: Codington County has 9 Medicare Advantage plans available for 2026, offered by 3 carriers. That's the local menu — and it's the starting point for making a good decision.

What "9 plans" really means

Watertown is in Codington County, and Medicare plan availability is set at the county level. So every person on Medicare living in Codington County — whether in Watertown, Kranzburg, or out on a farm road — sees the same 9 Medicare Advantage plans when they shop.

Those 9 plans come from just 3 different insurance companies. That's useful to know, because carriers often offer more than one plan with different structures (for example, an HMO and a PPO). When you compare, you're really choosing among 3 companies and the plan designs they've put on the shelf.

What about stand-alone drug plans?

This is where Codington County looks a little different from many parts of the country. According to CMS Landscape data, there are 0 stand-alone Part D prescription drug plans listed as available in the county for 2026 in the usual local file.

That almost certainly reflects how the data is grouped in South Dakota (stand-alone Part D plans are sold by region, not county), so if you have Original Medicare and want drug coverage, you'll still have Part D options — you just may need to look them up directly on medicare.gov by entering your ZIP code. A local SHIP counselor can also pull the full list for you.

The other numbers worth knowing for 2026

Beyond the local count, a few program-wide 2026 figures will shape your decision no matter which plan you choose:

• $2,100 — the new out-of-pocket cap on Part D prescription costs. Once your covered drug spending hits that amount, you pay $0 for covered drugs the rest of the year.
• $615 — the maximum Part D deductible a plan can charge.
• The coverage gap ("donut hole") is gone. As of 2025, Part D has three phases instead of four.
• Medicare Prescription Payment Plan — an optional program that lets you spread your drug costs into monthly payments instead of paying at the pharmacy counter.
• IRMAA — higher-income surcharges on Part B and Part D begin above $109,000 for a single filer in 2026.

How Codington County residents can narrow 9 down to 1

Nine plans can feel like a lot, but the decision usually comes down to a short checklist:

1. Your doctors and the Watertown-area hospitals you use. Check each plan's provider network before anything else. 2. Your prescriptions. Enter them into medicare.gov's Plan Finder to see how each plan treats your specific drugs. 3. How you like to get care. HMO plans usually require you to stay in-network; PPOs give more flexibility, often at a higher cost. 4. Extras that matter to you. Dental, vision, hearing, and fitness benefits vary widely. 5. Star Ratings. CMS rates Medicare contracts from 1 to 5 stars on quality and service. For 2026, no contracts serving the Codington County area carry a 4-star-or-higher rating, so ratings alone won't do the sorting for you — the other four items above will matter more.

Key dates to circle

• October 15 – December 7: Medicare Annual Enrollment Period. This is when most people compare and switch plans for the following year.
• January 1 – March 31: Medicare Advantage Open Enrollment. If you're already in a Medicare Advantage plan, you get one chance to switch to another MA plan or go back to Original Medicare.