
Topsham.
Prior to joining the Brunswick- Topsham area medical community, Ferstenberg practiced for nearly 20 years in Freeport, N.Y. He was a member of the medical staff at South Nassau Communities Hospital in Oceanside, N.Y.
A graduate of Columbia University in New York City, he earned his medical degree at Faculte Libre de Medecine in Lille, France. He completed internal medicine residency training through McGill University in Montreal and the Cleveland Clinic Foundation in Cleveland. He served a gastroenterology residency and a two-year gastroenterology fellowship at the University of Miami School of Medicine Division of Gastroenterology in Miami.
In addition, he served an endoscopy fellowship with University Hospital of Hamburg in Hamburg, West Germany, and a biliarytherapeutic endoscopy fellowship at the St. Luke’s Hospital Digestive Diseases Center in Racine, Wis.
He is certified in internal medicine and gastroenterology by the American Board of Internal Medicine.
He lives in Brunswick.
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