Browse Health
Gastroenterologist (digestive)
42 years of experience
Accepting new patients
Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Nelson Bonheim:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (7)

The overall average patient rating of Dr. Nelson Bonheim is Average. Dr. Bonheim has been reviewed by 17 patients who have provided 7 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 3.5
Promptness 3.5
Courteous Staff 4.0
Accurate Diagnosis 3.3
Bedside Manner 2.4
Spends Time with Me 2.6
Follows Up After Visit 2.8

Specialties & Research

Dr. Nelson Bonheim, MD is board certified in Gastroenterology.

  • He has special expertise in 27 areas:
  • AIDS/HIV (Acquired Immunodeficiency Syndrome)
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Autoimmune Diseases
  • Barrett Esophagus
  • Biliary Tract Diseases
  • Biliary Tract Surgical Procedures
  • Celiac Disease
  • Chronic Hepatitis B
  • Chronic Hepatitis C
  • Colon Cancer
  • Colonoscopy
  • Constipation
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Endoscopic Ultrasound (Fetoscopy)
  • Fibrosis
  • Hemorrhoids
  • Hepatitis
  • Hepatitis C
  • Inflammatory Bowel Diseases (IBD)
  • Irritable Bowel Syndrome (IBS)
  • > Show all expertise

Education & Awards

Dr. Bonheim graduated from Rosalind Franklin University, North Chicago. He has 1 awards.

Castle Connolly Top Doctors: New York Metro Area™ (2002 - 2008, 2010 - 2015)


Dr. Bonheim has 3 hospital affiliations:

  • Greenwich Hospital Association 
  • Greenwich Hospital, Greenwich CT 
  • Greenwich Hospital 


  • French
  • Yiddish

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Additional Information
Dr. Nelson Alfred Bonheim MD is a male Internist, has 42 years of experience and practices in Gastroenterology.
Where does Dr. Nelson A. Bonheim practice?
Dr. Nelson Bonheim has 1 office location.
Dr. Nelson Bonheim practices Gastroenterology near Greenwich, CT.
See Greenwich Gastroenterologists.