Browse Health
Gastroenterologist (digestive)
37 years of experience
Accepting new patients
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).

Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Peter Ells is Excellent. Dr. Ells has been reviewed by 4 patients who have provided 0 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.1
Promptness 4.3
Courteous Staff 4.1
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Peter Ells, MD is board certified in Gastroenterology.

  • He has special expertise in 10 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Biliary Tract Diseases
  • Cancer
  • Colorectal Cancer
  • Constipation
  • Hemochromatosis
  • Hepatitis
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Ells graduated from Tufts University, Boston. He has 1 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)


Dr. Ells has 6 hospital affiliations:

  • Albany Medical Center Hospital 
  • Stony Brook University Hospital 


  • Spanish

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Additional Information
Dr. Peter Francis Ells MD is a male Internist, has 37 years of experience and practices in Gastroenterology.
Where does Dr. Peter F. Ells practice?
Dr. Peter Ells has 3 office locations.
Dr. Peter Ells practices Gastroenterology near East Setauket, NY.
Additional practice locations include: Clifton Park, NY and Albany, NY.
See East Setauket Gastroenterologists.