Meet Our Providers.

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David Thorrez, MD

A graduate of the University of Michigan medical school and St. John's pediatric residency, Dr. Thorrez has devoted over 40 years to the medical care of children and teens. Dr. Thorrez believes that providing medical care for the children of Ypsilanti is God's call on his life, and he has been a trusted and beloved advisor to several generations of families. He is fluent in Spanish and has special interests in asthma and behavioral health.

Debra Boyer, MD

Dr. Boyer graduated from the Ohio State University College of Human Medicine and did her pediatric residency at Hurley Medical Center through Michigan State University. For over 25 years Dr. Boyer has been providing medical care for the children of southeast Michigan in the office and the pediatric emergency room. Dr. Boyer has special interests in nutrition and children with special needs.

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Karla Xavier, MD

Dr. Karla Ferretti C Xavier was a previous pediatrician, pediatric neonatologist, pediatric cardiologist and an expert in pediatric intensive care working in Brazil with many years of experience and moved to US due to her husband working at GM. She completed her Pediatric residency at the University of Toledo in 2019. As a Pediatrician, Dr. Xavier considers it a privilege and obligation to preserve and support the most precious gift we all have, the gift of life. She believes in treating patients using an integrated approach including caring for the physical, mental, cognitive, social and spiritual welfare of the child. Each of us has a particular purpose in this world. She believes it is the role of those who work in the medical field to strive to preserve life so those in their care are able to reach their full potential and complete their mission on earth. 

Jennifer Urabe, CFNP

Jennifer (Jen) Urabe graduated from the University of Michigan with her undergraduate and Master's degrees and is a board certified Family Nurse Practitioner. She developed her passion for pediatric primary care while working as a school nurse in a large elementary school, and feels blessed to serve alongside the dedicated practitioners at Mercy Christian Health.  Jen is particularly interested in disease prevention and health promotion through healthful nutrition, stress reduction, and exercise habits.

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Linda Chicko, CPNP

Linda Chicko obtained both her undergraduate and graduate degrees from Wayne State University.  She has been practicing as a board certified Pediatric Nurse Practitioner for 16 years in a variety of inpatient and outpatient settings. Special interests include infant development and early intervention for delays. Promoting healthy lifestyles through nutrition and physical activity. Some people say they can't imagine working with children but for Linda she can't imagine doing anything else. She loves the laughter and innocence they bring. One of her favorite quotes is; Its much easier to build strong children than to repair broken adults~ F. Douglass 

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