Medicare Advantage

Turning 65 in Watertown? Your Medicare Enrollment Guide

WATERTOWN, S.D. — Turning 65 is a milestone, and it comes with one of the most important deadlines you'll ever meet: your Initial Enrollment Period for Medicare. Miss it, and you could face lifelong late penalties. Handle it on time, and you set yourself up for smoother coverage from day one.

Turning 65 in Watertown? Your first Medicare decisions, step by step

Here's what Watertown residents need to know before that birthday arrives.

What the Initial Enrollment Period actually is

Your Initial Enrollment Period (IEP) is a seven-month window built around the month you turn 65. It starts three months before your birthday month, includes your birthday month, and runs for three months after.

If you sign up in the three months before your birthday month, your coverage generally starts the first day of your birthday month. Sign up later in the window, and coverage starts the month after you enroll. That's a detail worth planning around if you need care right away.

You can find the official rules at Medicare.gov.

The Medicare "parts" in plain English

Before you enroll, it helps to know what you're signing up for:

• Part A covers hospital stays, skilled nursing, hospice, and some home health. Most people pay no premium if they or a spouse worked and paid Medicare taxes long enough.
• Part B covers doctor visits, outpatient care, preventive services, and some durable medical equipment. It has a monthly premium.
• Part D covers prescription drugs. It's optional — but if you don't have other creditable drug coverage and skip it, you can be charged a lifetime late penalty later.
• Medicare Advantage (Part C) is an all-in-one alternative offered by private insurers, usually bundling Parts A, B, and often D.
• Medigap (Medicare Supplement) is separate private insurance that helps pay some of Original Medicare's out-of-pocket costs.

If you're still working — or your spouse is

Not everyone should enroll in Part B right at 65. If you have creditable health coverage through a current employer (yours or your spouse's), you may be able to delay Part B without penalty and use a Special Enrollment Period later.

But retiree coverage, COBRA, and marketplace plans don't count as "current employer" coverage for this rule. If you're unsure, call your benefits administrator — and confirm with Medicare — before your IEP ends. Getting this wrong is one of the most common (and expensive) mistakes new enrollees make.

What's new for 2027 you should know about

A few program-level facts to keep in mind as you compare your options:

• Part D out-of-pocket cap: $2,100 in 2026 and $2,400 in 2027. Once your out-of-pocket drug spending hits that amount, you pay nothing more for covered drugs the rest of the year.
• Part D maximum deductible: $615 in 2026 and $700 in 2027.
• The coverage gap ("donut hole") is gone as of 2025. Part D now has three phases instead of four.
• Medicare Prescription Payment Plan: an optional program that lets you spread your drug costs across the calendar year in monthly payments instead of paying all at once at the pharmacy.
• IRMAA: higher-income enrollees pay an income-related surcharge on Parts B and D. For single filers in 2026, IRMAA kicks in above $109,000 in income (based on your tax return from two years earlier).

What's available in the Watertown area

Watertown is in Codington County, where plan availability — Medicare Advantage plans, standalone Part D drug plans, and Medigap options — is set at the county level by the Centers for Medicare & Medicaid Services. That means two neighbors in different counties may see different plan menus.

You can see the exact plans available in Codington County by using the Plan Finder at Medicare.gov/plan-compare and entering your ZIP code.

Key dates after your IEP

Once you're enrolled, mark these on your calendar every year:

• Annual Enrollment Period: October 15 – December 7. This is when anyone with Medicare can change Part D or Medicare Advantage plans for the following year.
• Medicare Advantage Open Enrollment: January 1 – March 31. If you're already in a Medicare Advantage plan, you get one chance to switch to another Advantage plan or return to Original Medicare.