Internist, Gastroenterologist (digestive)
18 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 (4)

The overall average patient rating of Dr. Sergey Rybalov is Excellent. Dr. Rybalov has been reviewed by 14 patients who have provided 4 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.2
Promptness 3.8
Courteous Staff 4.3
Accurate Diagnosis 3.8
Bedside Manner 4.2
Spends Time with Me 4.2
Follows Up After Visit 4.2

Specialties & Research

Dr. Sergey Rybalov, 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. Rybalov graduated from Odessa State Medical University.


Dr. Rybalov has 7 hospital affiliations:

  • St. Clare's Hospital-Denville 
  • St. Clare's Hospital-Sussex 


  • Spanish
  • Russian
  • Ukrainian

> > > > Dr. Sergey Rybalov, MD

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Additional Information
Dr. Sergey Rybalov MD is a male Internist, has 18 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Sergey Rybalov practice?
Dr. Sergey Rybalov has 2 office locations.
Dr. Sergey Rybalov practices Internal Medicine and Gastroenterology near Denville, NJ.
Additional practice locations include: Dover, NJ.
See Denville Internists and Denville Gastroenterologists.