I don't claim to be an expert but our research on Medicare supplemental medical coverage (Medigap/Advantage/Supplement, whatever name an insurance company calls it) resulted in our learning that our coverage includes "normal medical care" that is available in SXM (broken bones, strains, sprains, dental and optical problems). It also offers cost support for life threatening medical conditions that cannot be provided by facilities in SXM. This includes medical evacuation to a facility that can provide such services. Our plan covers all of these via reimbursement after expenses are paid.
Look, my intent was to suggest that others look into their personal coverage so that they avoid getting something they already have. We were about to spend $600 for 2 weeks medical coverage in SXM because we were uninformed. Sometimes trying to help others goes unappreciated.