Educational Background:

• College: B.A., Magna Cum Laude, Phi Beta Kappa, Barnard College, Columbia University, New York, NY, 1976
• Medical School: M.D., Alpha Omega Alpha, Columbia University College of Physicians and Surgeons, New York, NY, 1980

Postgraduate Training:

• Internship: Internal Medicine, Columbia Presbyterian Hospital, New York, NY, 1980-1981
• Residency: Internal Medicine, Columbia Presbyterian Hospital, New York, NY, 1981-1983
• Fellowship: Clinical Fellow in Gastroenterology, Beth Israel Hospital, Harvard Medical School, Boston, MA, 1983-1984; Research Fellow in Gastroenterology, Beth Israel Hospital, Harvard Medical School, Boston, MA, 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, CT, 1988-present
• Section Head, Department of Gastroenterology, Greenwich Hospital, Greenwich, CT, 2012-present

Academic Affiliations:

• Instructor in Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, 1985-1988
• Clinical Instructor in Internal Medicine, Yale University School of Medicine, New Haven, CT, 1993-1996
• Assistant Clinical Professor, Yale University School of Medicine, New Haven, CT, 1996-present

Professional Affiliations:

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

Privileges: Dr. Zwas has privileges at Greenwich Hospital.

Practice Website:  www.connecticutgi.org

To request an appointment with Dr. Zwas, complete the form below or call (203) 489-6900.