Jill Feffer, MD, FACP, FACE

Dr. Jill Feffer is a board-certified endocrinologist and also board certified in internal medicine and endocrinology and diabetes & metabolism. Her areas of expertise include:

• • Adrenal and pituitary disorders
  • Osteoporosis and interpretation of bone densitometry, metabolic bone diseases and calcium disorders including hyperparathyroidism
  • Benign and malignant thyroid diseases
  • Diabetes mellitus including continuous glucose monitoring and insulin pump management
  • Polycystic ovarian syndrome (PCOS) and menstrual disorders
  • Transgender medicine
  • Obesity management

Dr. Feffer earned an A.B. in molecular biology from Princeton University, then attended New York University School of Medicine. She completed internship and residency in Internal Medicine at the Zucker School of Medicine at Hofstra/Northwell and fellowship in Endocrinology, Diabetes and Metabolism at the Icahn School of Medicine at Mount Sinai Beth Israel, Mount Sinai St. Luke's and Mount Sinai West. Dr. Feffer has presented and published thought-provoking case reports at professional society meetings and in peer-reviewed journals, and she was selected to attend the Harvard Macy Institute's Program for Post-Graduate Trainees: Future Academic Clinician-Educators in 2017. Dr. Feffer is a Fellow of the American College of Physicians and a member of the American Association of Clinical Endocrinologists and the Endocrine Society. She is conversant in medical Spanish and derives immense satisfaction from partnering with her patients to develop individualized treatment plans.