I just thought I'd post a few random thoughts about medical care and insurance in Mexico for us Yankees.
There is a move afoot to get a trial program in the State of Jalisco (Guadalajara) which would offer Medicare coverage in that state only but it has been under discussion for some time and appears to be no closer to happening than it ever was.
If you are a veteran with a service connected disability the VA will extend benefits for treatment in Mexico and probably most other countries. If you are a US veteran and belong to the American Legion you will probably also qualify for treatment in Mexican Military hospitals. The treatment there is generally viewed as excellent and the cost is less than my deductibles at a VA facility in the US. As an example, a private room costs less than $25 per day and a Specialist consultation costs a little over $7.
If you are retired and/or retired in Mexico on an FM3 (a resident visa) you may qualify for membership in the IMSS system, the Mexican Social Security medical plan, for about $260 per year. The first year of membership provides primarily for emergency treatment, mostly broken bones, etc. The second year provides greater coverage and the third and subsequent years provide quite comprehensive coverage. The quality of coverage also varies considerably depending on where you are. We have found coverage quite good in Guadalajara, mediocre or worse in Oaxaca. Also, you will not believe the things you will encounter; for example, plan to take your own toilet paper. Nevertheless, medical treatment will probably still be quite good
If you have some types of Blue Cross coverage in the US you may have reombursement available for Mexican treatment. You pay and they reimburse several months later.
We just returned from living in Mexico and plan to return as soon as possible, depending on the family situation which brought us back.
Feel free to email if there are specific questions.