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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 (1)

The overall average patient rating of Dr. Bryan Feyen is Excellent. Dr. Feyen has been reviewed by 4 patients who have provided 1 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Accurate Diagnosis 5.0

Specialties & Research

Dr. Bryan Feyen, DO is board certified in Internal Medicine and 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. Feyen graduated from Des Moines University.


Dr. Feyen has 5 hospital affiliations:

  • Mercy Medical Center 
  • Mercy Medical Center-Dubuque 

> > > > Dr. Bryan Feyen, DO

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Additional Information
Dr. Bryan John Feyen DO is a male Internist, has 13 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Bryan J. Feyen practice?
Dr. Bryan Feyen has 3 office locations.
Dr. Bryan Feyen practices Internal Medicine and Gastroenterology near Dubuque, IA.
Additional practice locations include: Platteville, WI.
See Dubuque Internists and Dubuque Gastroenterologists.