Oaxaca probably does not have very good providers. Your best bet would be Médica Sur or Hospital Angeles in CDMX, or maybe some place in Monterrey.

All you need now is sn urologist twice a year who can order a two-digit PSA test. The problems arise if you hapoen to have a recurrence. Do you still have a health insurance in the US? If yes, you would want to come here for radiation. If no, you may want to look cast the web wider and not only look in Mexico for a radiologist but also consider, e.g. Europe.

The real problem starts if you have a recurrence after having had salvage. If you don’t have health insurance you would either not get state-of-the-art care or treatment would be very expensive. Mexico has very affordable health care services, but latest generation drugs are either not available or almost as costly as in the US.