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Office
8761 E Bell Rd
Suite 105
Scottsdale, AZ 85260Phone+1 480-219-6662Fax+1 480-219-6596
Summary
- President, Arizona Gastrointestinal Associates, a growing group practice of Gastroenterologists and Hepatologists 2012 - 2014.
Colon & Digestive Health Specialists is a division of Arizona Gastrointestinal Associates.
Medical Director, Arizona Digestive Center in Scottsdale, AZ - An Ambulatory Surgery Center.
Principal Investigator: Digestive Health Research Unit. We focus on phase II, III and IV clinical trials of drugs used in the treatment of gastrointestinal and liver disorders.
Previously on faculty at Mayo Clinic Arizona and Mayo Medical College.
Hospitals served: Scottsdale Healthcare Shea and Osborn hospitals.
Specialties: Gastroenterology and Hepatology.
Clinical Research.
Education.
Education & Training
- Carnegie Mellon UniversityMMM, medical management, 2013
- Carnegie Mellon UniversityMMM, 2015
- Mayo Clinic College of Medicine and Science (Rochester)Fellowship, Gastroenterology, 1993 - 1996
- University at BuffaloResidency, Internal Medicine, 1990 - 1993
- Dow University of Health SciencesClass of 1988
Certifications & Licensure
- TX State Medical License 2024 - 2026
- AZ State Medical License 1996 - 2025
- GA State Medical License 1996 - 2005
- MN State Medical License 1993 - 2003
- IA State Medical License 1994 - 1998
- American Board of Internal Medicine Internal Medicine
- American Board of Internal Medicine Gastroenterology
- Certified Physician ExecutiveCertifying Commission in Medical Management (CCMM)
Awards, Honors, & Recognition
- Fellow (AGAF) American Gastroenterological Association, 2012
- CMS Meaningful Use Stage 1 Certification Practice Fusion EHR, Practice Fusion, Inc., 2012
- Top MD Consumers Checkbook
Publications & Presentations
PubMed
- 97 citationsThe diagnostic yield of stool pathogen studies during relapses of inflammatory bowel disease.Angela M. Meyer, Nizar N. Ramzan, Edward V. Loftus, Russell I. Heigh, Jonathan A. Leighton
Journal of Clinical Gastroenterology. 2004-10-01 - 54 citationsClinical significance of granuloma in Crohn's diseaseNizar N. Ramzan, Jonathan A. Leighton, Russell I. Heigh, Michael S. Shapiro
Inflammatory Bowel Diseases. 2002-05-01 - 51 citationsRelapse of inflammatory bowel disease associated with use of nonsteroidal anti-inflammatory drugs.Angela M. Meyer, Nizar N. Ramzan, Russell I. Heigh, Jonathan A. Leighton
Digestive Diseases and Sciences. 2006-01-01
Press Mentions
- Colon and Digestive Health Specialist, Gastroenterologist in Scottsdale, AZ - IsDocInSeptember 30th, 2016
Professional Memberships
- Fellow
External Links
- Digestive Health Research Unithttp://www.gastrotrials.com
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