Meet the Team
Marc E. Rothenberg, MD, PhD
Director, Division of Allergy and Immunology
marc.rothenberg@cchmc.org 
J. Pablo Abonia, MD
Professor, UC Department of Pediatrics
pablo.abonia@cchmc.org 
Scott M. Bolton, MD
Attending Physician, Division of Gastroenterology, Hepatology and Nutrition
scott.bolton@cchmc.org 
Margaret H. Collins, MD
Staff Pathologist, Division of Pathology
margaret.collins@cchmc.org 
Erinn S. Kellner, MD
Assistant Professor, UC Department of Pediatrics
erinn.kellner@cchmc.org 
Leah C. Kottyan, PhD
Associate Professor, UC Department of Pediatrics
leah.kottyan@cchmc.org 
Vincent A. Mukkada, MD
Medical Director, Lumen Inpatient Unit
vincent.mukkada@cchmc.org 
Philip E. Putnam, MD
Director, Endoscopy Services
philip.putnam@cchmc.org 
Kimberly A. Risma, MD, PhD
Professor, UC Department of Pediatrics
kimberly.risma@cchmc.org 
Justin T. Schwartz, MD, PhD
Assistant Professor, UC Department of Pediatrics
justin.schwartz@cchmc.org 
Nicole E. Zahka, PhD
Staff Psychologist III, Division of Behavioral Medicine and Clinical Psychology
nicole.zahka@cchmc.org Additional Team Members
3333 Burnet Avenue, Cincinnati, Ohio 45229-3026
© 1999-2024 Cincinnati Children's Hospital Medical Center. All rights reserved.
