Direct answer: You may be able to delay Part B if you have group health insurance based on current employment, as Medicare.gov describes. That is not automatic. Ask the employer whether you must enroll in Part B for the group plan to pay correctly. COBRA, retiree coverage, and Marketplace plans are not the current-employment test. Delaying without a qualifying Special Enrollment Period can create a late enrollment penalty.
What question should I ask human resources?
Ask whether the plan is a group health plan based on current employment, whether it is a large-group plan if you have a disability, and whether claims will be denied or reduced if you are Medicare-eligible but not enrolled in Part B. Medicare.gov's working past 65 page tells you to ask the employer that provides the insurance. Get the answer in writing.
When is the answer usually to enroll in Part B now?
Retiree coverage, COBRA, Marketplace coverage, and many small or individual policies are not reasons to delay. Medicare.gov says if you have insurance that is not from a job, rules vary and some private coverage pays less, or does not pay, once you are eligible for Medicare. If you are already retired and on COBRA, sign up for Medicare when you first qualify rather than waiting for COBRA to end.
How does this interact with Part D and Medigap?
Creditable employer drug coverage can delay Part D without a penalty if you do not have a 63-day gap. Keep the annual creditable-coverage notice. Medigap federal Open Enrollment is tied to Part B enrollment at 65 or older, and it is not part of Medicare Annual Enrollment. If you delay Part B for years, you also delay that Medigap window. See Advantage versus Supplement.
Where else is this covered on the site?
Use Working past 65 in Lakeland for the local employer-coordination checklist and when to sign up if you are still working for the clock. This page isolates the Part B yes-or-no question.
What happens to dependents if I enroll in Medicare?
Your Medicare decision can change who remains on the employer plan. Some employers drop the employee from the group plan once Medicare is primary, which can affect a younger spouse. Ask whether dependents can stay and what they pay. That answer belongs in the same written request as the Part B question.
If a spouse will need Marketplace coverage after leaving the group plan, that spouse may have a Special Enrollment Period. See coverage outside Open Enrollment. Do not leave that person uninsured while you complete Medicare paperwork.
Lakeland and Polk County employers vary. There is no single local rule. Confirm with the administrator, then with Social Security.
How do I ask the employer the right question?
Ask, in writing: Is this a group health plan based on current employment? Does the plan require Medicare Part A or Part B at 65? How does claims payment change if I enroll in Medicare? Can dependents remain if I enroll or if I delay? Request the creditable coverage notice for drugs.
Take that letter to Social Security if you delay Part B. Verbal hallway advice is hard to use later. See Medicare.gov working past 65.
If the employer is unsure, that is a reason not to delay. You can enroll during the Initial Enrollment Period and revisit Advantage or Medigap later. Those later choices still follow their own windows.
What to do next
Call the employer benefits administrator, then confirm Medicare sign-up steps with Social Security. David Huff, a licensed Florida health agent, can help you interpret how a plan may work with Medicare. He cannot decide the employer's coordination rule. Call (863) 640-3102 or use Get Help.
Confirm Part B with the employer before you delay
Bring the group plan booklet or a benefits contact. An agent review does not enroll you in Part B.
Request a Plan Review Call (863) 640-3102We do not offer every plan available in your area. Currently we represent 10 organizations which offer 73 products in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.
Sources
Coordination of benefits is controlled by the employer plan and Medicare. Confirm with the administrator and Medicare.gov. This page is not connected with or endorsed by the U.S. government or the federal Medicare program.
We do not offer every plan available in your area. Currently we represent 10 organizations which offer 73 products in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.
Company inventory note: The 10 organizations and 73 products referenced above reflect the plans available for the 2026 plan year in the Lakeland/Polk County service area as of August 17, 2026. They are not CMS counts or statewide Florida totals. Counts and available products vary by ZIP code, service area, plan year, and current company authorization. Confirm the ZIP code and current approved platform inventory before relying on these figures. Plan availability, benefits, networks, formularies, pharmacies, and costs are subject to the applicable plan documents and service area.