Hi Lynn,
As far as Manuel Antonio Estates, I don’t know anybody who could speak on this development. Your best bet will be to seek out people living there and try to contact them, perhaps if you visit in person.
There is a public hospital in Quepos, as well as doctors and private medical clinics. San Jose, the capital of the country and where the best and biggest public and private hospitals and the most specialists are located, is about a two hour drive away.