Pomona Pediatrics provides care to infants, children, adolescents, and young adults up to age 18.
Our Doctors
Our staff is dedicated to providing the best possible healthcare for our young patients. Each of our physicians are board-certified and provide personalized care in a warm and friendly environment. Every one of our pediatricians and pediatric nurses has received extensive education, training, and experience in caring for children from infancy to teenage years and pre-adult.
Sandra Hollenberg, MD
Dr. Hollenberg began practicing at Pomona Pediatrics in 1982 and has developed an interest in computerized medical records and has been working hard to keep our system at the forefront of medical charting.
Ericka Hong, MD
Dr. Hong was excited to join Pomona Pediatrics in 2006 and is board certified in Pediatrics and a fellow of the American Academy of Pediatrics.
Carrie Knoll, MD
Dr. Carrie Knoll joined Pomona Pediatrics in 1998 and is board certified and a fellow of the American Academy of Pediatrics.
Edna Shia, MD
Dr. Edna Shia joined Pomona Pediatrics in 2020 and is board certified in pediatrics and a fellow of the American Academy of Pediatrics.
Toya Tillis, MD
Dr. Tillis joined Pomona Pediatrics in 2011 and is board certified in pediatrics and a fellow of the American Academy of Pediatrics.
James Warren, MD
Dr. Warren joined Pomona Pediatrics in 2001 and is board certified in pediatrics and a fellow of the American Academy of Pediatrics.
Diana Yu, DO
Dr. Yu joined Pomona Pediatrics in 2021 and is board certified in pediatrics and a fellow of the American Academy of Pediatrics.
Patricia F. Villegas, MD
Dr. Villegas joined Pomona Pediatrics in 2024.
