Browse Health
Gastroenterologist (digestive)
31 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 (8)

The overall average patient rating of Dr. Douglas Rex is Excellent. Dr. Rex has been reviewed by 27 patients who have provided 8 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.5
Promptness 4.1
Courteous Staff 3.7
Accurate Diagnosis 4.5
Bedside Manner 4.2
Spends Time with Me 4.1
Follows Up After Visit 4.1

Specialties & Research

Dr. Douglas Rex, MD is board certified in Gastroenterology.

  • He has special expertise in 25 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Colectomy
  • Colon Cancer
  • Colon Tumor (Adenomatous Polyps)
  • Colonic Diseases
  • Colonic Polyps
  • Colonoscopy
  • Colorectal Cancer
  • Constipation
  • Digestive System Endoscopy (EGD)
  • Endoscopy (Endoscopic Surgery)
  • Esophagoscopy
  • Gastrointestinal Endoscopy
  • Gastroscopy
  • Hepatitis C
  • Inflammatory Bowel Diseases (IBD)
  • Intestinal Diseases
  • Irritable Bowel Syndrome (IBS)
  • Polyps
  • Rectal Diseases
  • > Show all expertise

Education & Awards

Dr. Rex graduated from Indiana University , Indianapolis. He has 14 awards.

One of America's Leading Experts on:
Colon Cancer (Colonic Neoplasm)
Colon Tumor (Adenomatous Polyps)
Colonic Diseases
Colonic Polyps
Colorectal Cancer (Colorectal Neoplasm)
Gastrointestinal Endoscopy
Castle Connolly America's Top Doctors® (2002 - 2008, 2010 - 2015)
Castle Connolly America's Top Doctors® for Cancer (2009 - 2012, 2014 - 2015)
Castle Connolly's Top Doctors™ (2012 - 2013)
Compassionate Doctor Recognition (2014)
Top 10 Doctor - City (2014)
Indianapolis, IN
Top 10 Doctor - Metro Area (2014)
Greater Indianapolis


Dr. Rex has 14 hospital affiliations:

  • Clarian Health Partners, Incorporated 
  • Wishard Health Services 

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Additional Information
Dr. Douglas K Rex MD is a male Internist, has 31 years of experience and practices in Gastroenterology.
Where does Dr. Douglas K. Rex practice?
Dr. Douglas Rex has 1 office location.
Dr. Douglas Rex practices Gastroenterology near Indianapolis, IN.
See Indianapolis Gastroenterologists.