I highly recommend Dr. Nusly Pocha in Mumbai for an FAA Class I if needed. I have been going to him since 2007. He has been an FAA AME for 27 years. He knows his stuff. He will examine you and do all the tests required per the FAA.
He charges Rs 5000 for a class I. He is located in Tardeo, which is about 1 hr taxi ride from the airport.