BaronO,
I live and was treated in NYC, and in my opinion, it’s the best, besides having a number of options, all take Medicare, which I have.
I’ve been treated at four hospitals in Manhattan, that’s where to you go if you decide. You have such places such as Memorial Sloan Kettering, NY Presbyterian, Columbia University, Lenox Hill Hospital, NYU, Beth Israel Union Square which is part of Mt Sinai, but seperare places, and New York Eye and Ear Infirmary to name a few.
There is a ACS Hope Lodge on West 33rd Street, where I stayed for free for 6 weeks in 2013, and it’s the best!
I hope this helps, and good luck.