www.centerforgimed.com

College: B.A., Magna Cum Laude, Phi Beta Kappa, Barnard College, Columbia University, New York, N.Y., 1976

Medical School: M.D., Alpha Omega Alpha, Columbia University College of Physicians and Surgeons, New York, N.Y., 1980

Internship: Internal Medicine, Columbia Presbyterian Hospital, New York, N.Y., 1980-1981

Residency: Internal Medicine, Columbia Presbyterian Hospital, New York, N.Y., 1981-1983

Fellowship: Clinical Fellow in Gastroenterology, Beth Israel Hospital, Harvard Medical School, Boston, Mass., 1983-1984
Research Fellow in Gastroenterology, Beth Israel Hospital, Harvard Medical School, Boston, Mass., 1984-1985

Board Certification: American Board of Internal Medicine, 1973
American Board of Internal Medicine (Gastroenterology), 1975

Licensure: Connecticut, 1988-present
Massachusetts, 1984-present
New York, 1985-present

Hospital Appointments:
Assistant Attending Physician, Department of Internal Medicine, The Long Island College Hospital, 1985-1988
Attending Physician, Greenwich Hospital, Greenwich, Conn., 1988-present
Section Head, Department of Gastroenterology, Greenwich Hospital, Greenwich, Conn., 2012-present

Academic Affiliations:
Instructor in Medicine, State University of New York, Downstate Medical Center, Brooklyn, N.Y., 1985-1988
Clinical Instructor in Internal Medicine, Yale University School of Medicine, New Haven, Conn., 1993-1996
Assistant Clinical Professor, Yale University School of Medicine, New Haven, Conn., 1996 – present

Professional Affiliations:
Fellow, American College of Gastroenterology
Fellow, American Society for Laser Medicine and Surgery
American Gastroenterological Association
American Public Health Association
Connecticut State Medical Society
Fairfield County Medical Association
Greenwich Medical Society
Brooklyn Gastroenterology Association

Dr. Zwas has privileges at Greenwich Hospital.