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Course Instructors

We are a team of physicians and researchers at the Barbara Davis Center for Diabetes at the University of Colorado School of Medicine. Our team has over 25 years’ experience working to understand childhood autoimmune disease. During that time, we have screened thousands of children and adults for early stage (presymptomatic) type 1 diabetes and helped hundreds of patients and their families understand the disease process and monitor for progression to symptomatic type 1 diabetes.

Marian Rewers
Marian Rewers MD, PhD

Professor of Pediatrics & Medicine

Richard S. Abrams Endowed Chair

Executive Director,
Barbara Davis Center for Diabetes

Holly O'Donnell
Holly O'Donnell PhD

Licensed Clinical Psychologist

Assistant Professor of Pediatrics

Brigitte Frohnert
Brigitte Frohnert MD, PhD

Associate Professor of Pediatrics

Kimber Simmons
Kimber Simmons MD, MS

Associate Professor of Pediatrics


Cristy Geno
Cristy Geno Rasmussen

Assistant Professor of Pediatrics  ASK Program Manager


Andrea Steck
Andrea Steck MD

Professor of Pediatrics 

Research Director, Pediatric
Diabetes Division

Director, Prevention Research Team

Kimberly Bautista
Kimberly Bautista MPH

Research Instructor 
ASK Follow Up Coordinator
Ask the Experts Study Coordinator 

Patricia Gesualdo
Patricia Gesualdo RN, MSPH

Senior Research Instructor
TEDDY Study Coordinator

Iman Taki
Iman Taki 

DAISY and ASK Studies
Celiac Disease Coordinator



Hali Broncucia
Hali Broncucia 

Research Instructor
Manager, Prevention Team

Rachel Karban
Rachel Karban

TEDDY and DAISY Retention Coordinator


Kathy Waugh
Kathleen Waugh MS

Senior Research Instructor

BDC Clinical Research Laboratory Manager


Danny Felipe-Morales
Daniel Felipe-Morales

Senior IT Data Manager


Flor Sepulveda
Flor Sepulveda 

The Early Start Study (TESS)
Study Coordinator
Early Stage T1D Education and Support (ESTES) Study Coordinator

Joey Wong
Joey Wong

Database and Web Application Developer




The Barbara Davis Center for Diabetes (BDC) specializes in Type 1 Diabetes (T1D) research and care for children and adults. It is one of the largest diabetes institutes in the world. The Center is part of the University of Colorado School of Medicine and has its dedicated building on the Anschutz Medical Campus in Aurora, Colorado.


The Center was funded by Marvin and Barbara Davis, in 1978, and is generously supported by the Children’s Diabetes Foundation (CDF)​.

Clinicians, clinical researchers, and basic biomedical scientists work at the BDC to find the most effective treatment, prevention, and cure for T1D. The Center provides state-of-the-art diabetes care to 4,600 children and 2,900 adults with diabetes from the Rocky Mountain Region as well as receiving national and international referrals. We also provide inpatient care to patients who are seen at the Children’s Hospital Colorado with any type of diabetes.

The Center’s faculty teach the medical, physician assistant, nursing, and dental students on campus. Residents and endocrinology fellows train at the Center on elective rotations. Basic science faculty members provide mentorship to pre-doctoral students and post-doctoral fellows from around the world.

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