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Internist, Gastroenterologist (digestive)
35 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 (0)

The overall average patient rating of Dr. Peter Mavrelis is Good. Dr. Mavrelis has been reviewed by 7 patients who have provided 0 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 3.2
Promptness 5.0
Courteous Staff 3.7
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Peter Mavrelis, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 8 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Colonoscopy
  • Constipation
  • Esophagoscopy
  • Gastroscopy
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Mavrelis graduated from Washington University at St. Louis, Saint Louis.


Dr. Mavrelis has 14 hospital affiliations:

  • St Anthony Memorial Health Centers 
  • St. Catherine Hospital 


  • English
  • Greek

> > > > Dr. Peter Mavrelis, MD

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Additional Information
Dr. Peter George Mavrelis MD is a male Internist, has 35 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Peter G. Mavrelis practice?
Dr. Peter Mavrelis has 4 office locations.
Dr. Peter Mavrelis practices Internal Medicine and Gastroenterology near Valparaiso, IN.
Additional practice locations include: Merrillville, IN and Portage, IN.
See Valparaiso Internists and Valparaiso Gastroenterologists.