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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 (4)

The overall average patient rating of Dr. Joshua Korzenik is Good. Dr. Korzenik has been reviewed by 14 patients who have provided 4 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 3.8
Promptness 3.3
Courteous Staff 4.0
Accurate Diagnosis 4.0
Bedside Manner 4.5
Spends Time with Me 4.5
Follows Up After Visit 3.8

Specialties & Research

Dr. Joshua Korzenik, MD is board certified in Gastroenterology.

  • He has special expertise in 5 areas:
  • Crohn's Disease
  • Hereditary Hemorrhagic Telangiectasia
  • Inflammatory Bowel Diseases (IBD)
  • Microscopic Colitis
  • Ulcerative Colitis

Education & Awards

Dr. Korzenik graduated from Yeshiva University, Bronx. He has 3 awards.

Patients' Choice Award (2011 - 2012)
Compassionate Doctor Recognition (2011 - 2013)
Top 10 Doctor - City (2014)
Boston, MA


Dr. Korzenik has 5 hospital affiliations:

  • Massachusetts General Hospital 
  • Brigham and Women's Hospital 


  • French
  • Creole

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Additional Information
Dr. Joshua Raphael Korzenik MD is a male Internist, has 24 years of experience and practices in Gastroenterology.
Where does Dr. Joshua R. Korzenik practice?
Dr. Joshua Korzenik has 4 office locations.
Dr. Joshua Korzenik practices Gastroenterology near Boston, MA.
Additional practice locations include: Saint Louis, MO.
See Boston Gastroenterologists.