I dont know any Gyn in Manhattan, but know from experience the doctors associated with LIJ(in Long Island) are the best. Dr. Joan Altman-Neumann used to be my GYN, and i assure you that she was one of the best GYNs ever. I am just sharing my experience, but am not sure which insurances she accepts.
good luck,
By the way, you can use this link to see the reviews for doctors that you choose.
http://www.ratemds.com/social/?q=node/11
Hi Lily, thanx a ton for this link. It really helped me.