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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 (9)

The overall average patient rating of Dr. Jay Fenster is Excellent. Dr. Fenster has been reviewed by 24 patients who have provided 9 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.3
Promptness 4.4
Courteous Staff 4.3
Accurate Diagnosis 4.6
Bedside Manner 4.5
Spends Time with Me 4.5
Follows Up After Visit 4.3

Specialties & Research

Dr. Jay Fenster, MD is board certified in Gastroenterology.

  • He has special expertise in 5 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Fenster graduated from State University of New York Downstate, Brooklyn. He has 2 awards.

Patients' Choice Award (2011 - 2013)
Compassionate Doctor Recognition (2011 - 2014)


Dr. Fenster has 5 hospital affiliations:

  • St John's Episcopal Hospital 
  • St Catherine Of Siena Medical Center 


  • Yiddish
  • Spanish
  • Hebrew
  • Russian

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Additional Information
Dr. Jay Samuel Fenster MD is a male Internist, has 25 years of experience and practices in Gastroenterology.
Where does Dr. Jay S. Fenster practice?
Dr. Jay Fenster has 1 office location.
Dr. Jay Fenster practices Gastroenterology near Cedarhurst, NY.
See Cedarhurst Gastroenterologists.