Accepting New Patients

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Our Hospital Policy

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Certified Lactation Nurse on Staff

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We Offer Wart Removal

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Our Weight Management Program

Learn about healthy food choices and daily activities.

News Archive

Jill Johnston, MD, FAAP

Dr. Johnston has been practicing pediatrics since 2004. After receiving her Bachelor of Science in Biology from Indiana University, she spent four years at the St. Louis

University Pediatric Research Institute studying pediatric critical care. She was awarded her Medical Degree from Southern Illinois University in 2001. After completing her pediatric residency at St. Louis University’s Cardinal Glennon Children’s Medical Center, she joined St. Clair Pediatrics in 2004. Dr. Johnston is board-certified in pediatrics and a Fellow of the American Academy of Pediatrics. She is a member of the St. Clair Medical Society, the Illinois State Medical Society, and the American Medical Association. She lives in O’Fallon with her husband and two children. 


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