@lany82
If you get free treatment in USA, you probably need to think very carefully before giving it up.
Spain's a great country, and if you already speak Spanish the transition is pretty easy. It's a very popular retirement destination (neighboring Portugal too) at a lower cost than USA. There's an easy residence option (NLV in Spain and D7 in Portugal) for retirees.
In general, health care in Spain is pretty good. Valencia is a lovely city, and pretty big, so it would have pretty much anything you need. (There are quite a few larger cities, so somewhere near Barcelona, Alicante, Malaga, Murcia, Bilbao, Granada would all be very acceptable. We're in Elche next to Alicante, and it is great place with easy access to the big city and lovely Costa Blanca beaches.)
There is a public health system in Spain (SNS), which is very nice to have. There are restrictions for non-EU foreigners, so, in the short term, you will require private insurance. This is very good, but, like everywhere, pre-existing conditions will bump up the premiums substantially. You might want to get a quote.
After a certain period of legal residence (1 year, I think), you can get on the Convenio Especial (affiliated with SNS). The cost is 157 euros per month for older folks (1,884 euros per person). Not cheap, but without exclusions, deductibles, or age limits.
https://www.sanidad.gob.es/en/servCiuda … pecial.htm
If 4k for your Convenio Especial is a tiny part of your retirement income, then you're all set. But, just in case, I will mention that although I have my Spanish residence permit (and Cyprus too), I mostly hang out in Bulgaria. It's cheaper for property (to buy and to own) and cheaper to live (and has cheap Wizzair and Ryanair flights to both). Getting into the public healthcare system takes longer (5 years, unless you do some work beforehand) but is cheaper. We pay 500 euros per year for the two of us (and they give us an EHIC for cover in the rest of the EU). There's an unexpected bonus here too, as most of the private hospitals are affiliated with the public system (NHIF) and get reimbursed by it. So you can get immediate, VIP treatment (as per private insurance) for a ludicrously small surcharge. Bulgaria is surprisingly great and we are very happy here, so it's not just about saving a few bucks. :-)