Retired members who received and paid for health insurance coverage from another source 2025 recently received a mailing outlining how to apply for the health insurance premium subsidy. Applicants must complete and return a Rebate Application (Form 355) along with all required supporting documentation. If you were enrolled in a group plan, you must also submit a Group Health Insurance Premium Verification (Form 354). Form 355 must accompany Form 354 or already be on file for it to be accepted.