Open Enrollment Health Insurance 2025 Dates And Times. Open enrollment starts — first day you can enroll in, renew, or change marketplace plans. Open enrollment started, and you have less than a month to enroll in or change plans that begin january 1, 2025.

 — when is open enrollment in 2025?  — the open enrollment period (oep) is a specific time when you can enroll in a new health plan or modify your existing health policy for 2025.