people don't get denied entry for spending 60 days previously in Thailand. It's when they try and live in Thailand on tourist visas/exemptions. People that encounter issues have normally spent 6+ months here especially back to back entries and they'll often receive warnings from immigration that they'll be denied next time.
Siriraj is a highly regarded public hospital that tends to deal with complex cases. They have a private hospital connected called Siriraj Piyamaharajkarun Hospital, might be worth consideration.