Welcome to the Upper East Side OB/GYN section containing OB/GYN doctors in 10022, 10065, 10021, 10075, 10028 and 10128 zip codes. Obstetricians & Gynecologists specialize in women's reproductive organs. Obstetricians care for women during pregnancy, delivery and post-childbirth. Gynecologists treat disorders of the female genital tract and endocrine and reproductive system. OB/GYNs can practice in both areas or limit their work to just one of them. This specialty has the following subspecialties: Gynecological Oncology; Maternal and Fetal Medicine; Critical Care Medicine; Reproductive Endocrinology. Be sure to hold your mouse over any bold-italicized listings for a special pop-up description.