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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. Christopher O'Brien is Good. Dr. O'Brien has been reviewed by 33 patients who have provided 9 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 4.0
Promptness 3.7
Courteous Staff 4.3
Accurate Diagnosis 4.3
Bedside Manner 3.8
Spends Time with Me 3.9
Follows Up After Visit 3.9

Specialties & Research

Dr. Christopher O'Brien, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 8 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Chronic Hepatitis C
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Liver Diseases
  • Liver Transplantation
  • Ulcerative Colitis

Education & Awards

Dr. O'Brien graduated from Johns Hopkins University, Baltimore. He has 4 awards.

Excellence in community public service american liver foundation
Researcher of the year american liver foundation
Patients' Choice Award (2014)
Top 10 Doctor - Neighborhood (2014)


Dr. O'Brien has 7 hospital affiliations:

  • University Hospital & Med Cen 
  • Jackson Memorial Hospital 


  • Spanish
  • English

> > > > Dr. Christopher O'Brien, MD

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Additional Information
Dr. Christopher B O'Brien MD is a male Internist, has 32 years of experience and practices in Internal Medicine, Gastroenterology, and Hepatology.
Where does Dr. Christopher B. O'Brien practice?
Dr. Christopher O'Brien has 4 office locations.
Dr. Christopher O'Brien practices Internal Medicine, Gastroenterology, and Hepatology near Miami, FL.
Additional practice locations include: Philadelphia, PA.
See Miami Internists, Miami Gastroenterologists, and Miami Hepatologists.