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Meet Our Team


Obinna Maduka, MD

Dr. Obinna “Obi” Maduka, received his medical degree from the University of Nigeria College of Medicine in 1979 and completed his residency in pediatrics at the Medical College of Virginia in Richmond, VA in 1988. He has admitting privileges at Windham Hospital. Dr. Maduka is married with six children and enjoys golf and music. He is board certified in pediatrics and is a Fellow of the American Academy of Pediatrics.


Tristin Geist, APRN

Tristin Geist, APRN received her Master’s of Science degree in Nursing-Pediatric Primary Care Nurse Practitioner from the University of Pennsylvania School of Nursing in 2016 and her Bachelor of Science degree in Nursing from Johns Hopkins University School of Nursing in 2013. She completed her clinical experience at the Lehigh Valley Children’s Clinic in Allentown, PA.