Dr. Halfen graduated from the Caracas Univ Sch of Med,Universidad Central De Venezuela Escuela De Medicina Luis Razetti in 1970. He works in Stony Brook, NY and 1 other location and specializes in Reproductive Endocrinology, Endocrinology, Diabetes & Metabolism and Obstetrics & Gynecology. Dr. Halfen is affiliated with Good Samaritan Hospital.
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