Medical Advisors

Richard Boles, MD
Medical Geneticist in private practice Pasadena, CA
Dr. Boles’ Website
CNNH NeuroHealth
E-mail Dr. Boles

David Fleisher, MD (Retired)
Associate Professor, Child Health-GI
University of Missouri Hospital and Clinics
1 Hospital Drive
Columbia, MO 65212

Amy Gelfand, MD
Director of Pediatric Headache, Associate Professor of Neurology & Pediatrics
UCSF Benioff Children’s Hospital
UCSF Ron Conway Family
Gateway Medical Building
San Francisco, CA 94143
Appointment scheduling: 415-502-1914

Charles Horn, PhD
Associate Professor of Medicine & Anesthesiology
University of Pittsburgh
5117 Centre Avenue
Pittsburgh, PA 15213
P: 412-623-1417
Dr. Horn’s Website

Robert Issenman, MD
Professor of Pediatrics, McMaster University-Peds GI & Nutrition
McMaster Children’s Hospital
1280 Main St. W.,
Hamilton, Ontario, Canada LXS 4K1
P: 905-521–2100, Ext. 75637
F: 905-521–2655


Katja Kovacic, MD
Assistant Professor of Pediatric Gastroenterology
Director of Motility and Cyclic Vomiting Syndrome Programs
Children’s Hospital of Wisconsin
Medical College of Wisconsin
P: 414-266-3690

David J. Levinthal, MD, PhD
Assistant Professor Director, Neurogastroenterology and Motility Center
Department of Medicine
Division of Gastroenterology, Hepatology, and Nutrition
University of Pittsburgh Medical Center
P: 412-232-8888
F: 412-232-8887

B U. K. Li, MD
Clinical Professor of Pediatrics
Medical College of Wisconsin,
Children’s Hospital Wisconsin,
8701 Watertown Plank Rd.
Milwaukee, WI 53226

Sally Tarbell, PhD
Retired Professor of Psychiatry and Behavioral Sciences
Northwestern University Feinberg School of Medicine
Neurointestinal & Motility Program

Thangam Venkatesan, MD
Professor of Medicine
Director, Division of Neurogastroenterology and Motility
Department of Internal Medicine
The Ohio State University College of Medicine
395 W 12th Avenue, Columbus, OH 43210
For scheduling – please call GHN Office: Phone: 614-293-6255