Our Practice

W. Patrick Zeller

Dr. W. Patrick Zeller, MD
Dr. W. Patrick Zeller is a retired professor of Pediatrics and Physiology at Loyola University Stritch School of Medicine since 1997. He is an author of over 200 publications. Dr. Zeller lectures extensively and has multiple funded studies that are still in progress.

Stephen Skjei, MD

Stephen D. Skjei, MD
Dr. Stephen Skjei attended medical school at Washington University in St. Louis. He completed his residency in Internal Medicine and fellowship in Endocrinology and Metabolism at the University of Chicago. In between his residency and fellowship, he worked for two years as a hospitalist at the Greater Baltimore Medical Center in Baltimore, Maryland. He and his wife are happy to have returned to the Chicago area.

Daesman Suri, MD

Daesman Suri, MD
Dr. Daesman Suri attended medical school, completed her residency in Internal Medicine, and her fellowship in Endocrinology and Metabolism at the University of Chicago-Pritzger School of Medicine. She is the lead author on four peer-reviewed publications based on her patient oriented clinical research. Dr. Suri is particularly interested in treating the endocrine disorders that complicate pregnancy, diabetes mellitus, and abnormalities in the hypothalamic-pituitary axis. Dr. Suri is married and has a daughter. She believes that the experience of parenthood has given her a much better appreciation for the concerns of parents of children with endocrine diseases.

Carrie Zimmer, MD

Carrie Zimmer, MD
Dr. Carrie Zimmer received her MD and PhD in neuroscience from the University of Michigan. She completed her pediatric residency and pediatric endocrinology fellowship at the University of Chicago. Dr. Zimmer has spent her life in the Midwest. Her interests include disorders of puberty, pituitary abnormalities and bone disorders.

Magdalena Dumin, MD

Magdalena Dumin, MD
Dr. Magdalena Dumin received her MD degree from Jagiellonian University Medical College in Krakow, Poland. She then pursued pediatric residency at Loyola University and pediatric endocrinology fellowship at the University of Chicago. Her clinical interests include diabetes, disorders of puberty, growth, and obesity as well as pituitary abnormalities.

Staff Members

Deborah Horne, Physician Assistant, CDE


Kim Davis, RN, CDEKim Davis, RN, CDE


Sharon Groah, RN

Mary Jo Leggett, RN

Debbie Bailey, RN


Office Hours

Monday - 9am - 6pm
Tuesday - 8am - 5:30pm
Wednesday - 8am - 7:00pm
Thursday - 8am - 4:30pm
Friday - 9am - 4:30pm

Contact Us

For inquiries and appointments: