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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).

Learn more about Dr. Joseph Belladonna:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Joseph Belladonna is Excellent. Dr. Belladonna has been reviewed by 1 patients who have provided 0 comments. The rating is 5 out of 5 stars.

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

Specialties & Research

Dr. Joseph Belladonna, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 7 areas:
  • Abdominal Hernia
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Inflammatory Bowel Diseases (IBD)
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Belladonna graduated from Cornell University, New York.


Dr. Belladonna has 3 hospital affiliations:

  • St Barnabas Medical Center 
  • Overlook Hospital 
  • Overlook Medical Center 


  • English

> > > > Dr. Joseph Belladonna, MD

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Additional Information
Dr. Joseph A Belladonna MD is a male Internist, has 43 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Joseph A. Belladonna practice?
Dr. Joseph Belladonna has 1 office location.
Dr. Joseph Belladonna practices Internal Medicine and Gastroenterology near Berkeley Heights, NJ.
See Berkeley Heights Internists and Berkeley Heights Gastroenterologists.