Our pediatricians are Fellows of the American Academy of Pediatrics.  Pediatricans who maintain their FAAP designation have obtained board certification in pediatrics and made an ongoing commitment to lifelong learning and advocacy for children.

Erin O'Brien, MD, FAAP
Erin O'Brien, MD, FAAP

Dr. O'Brien was born in Chicago and attended Loyola University where she earned a B.A. in sociology.  She attended Rush Medical College and received her M.D. in 2000.  She completed her pediatric residency in 2003 at Rush Presbyterian St. Luke's Medical Center in Chicago.

Jason Tjaden, MD, FAAP
Jason Tjaden, MD, FAAP

Dr. Tjaden was raised in downstate Vandalia and received his B.S. with honors in biochemistry from the University of Illinois Urbana-Champaign.  He attended medical school at the University of Illinois Peoria and completed his residency in pediatrics at Cincinnati Children's Hospital Medical Center where he received an Adolescent Medicine Award in recognition of his achievements in adolescent medicine.

P: 847-658-6065

F: 847-658-6136


301 N Randall Rd

Lake in the Hills, IL 60156

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05/10/21:  Pfizer COVID vaccine approved for EUA in kids 12 and older




 FAQ from our Providers


IDPH COVID-19 Isolation and Quarantine Guidelines

IDPH Isolation Quarantine 10.23.20
Release Isolation+Quarantine Release Gra
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Open Letter to Parents
VPS 1.1.16.pdf
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Required Vaccines for IL Schools
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