About
Dr. Ji Yon Han brings an unusually broad background to pediatric medicine. Born in South Korea, she immigrated to the United States as a teenager. She earned her bachelor's degree in Electrical Engineering, summa cum laude, from the University of Missouri of Science and Technology at Rolla before serving as a Nuclear Power School instructor in the United States Navy. That experience working with thousands of students pointed her toward a career built on deeper human connection.
Her mother's dedication to underserved patients as a nurse's assistant inspired Dr. Han to pursue medicine. She attended The Medical College of Georgia for medical school and completed her residency in pediatrics at the Children's Hospital of Georgia. After moving to Southern California in 2009, she worked as a pediatric hospitalist at several hospitals, including Children's Hospital of Orange County, before founding Grace Pediatrics in 2014. She holds board certification through the American Academy of Pediatrics and serves as a Fellow member of its Orange County chapter. She recently earned certification to diagnose autism and plans to introduce a formal evaluation program at the practice. Dr. Han is passionate about adolescent mental health, screening every teen for mental health concerns and supporting them with consistent follow-up. She also devotes significant attention to families navigating developmental delays, partnering with parents to make decisions in the best interests of each child. A mother of two herself, she approaches every patient as a whole person. She conducts all AviClear acne laser treatments, Secret Duo scar treatments, and medical ear piercings personally. She speaks English and Korean.
Education & Training
Undergraduate
University of Missouri of Science and Technology at Rolla, B.S. in Electrical Engineering (summa cum laude)
Medical School
The Medical College of Georgia
Residency
Pediatrics, Children's Hospital of Georgia
Additional Training
Nuclear Power School instructor, United States Navy; Certified to diagnose autism
Certifications
Languages
English, Korean
Conditions Treated
Who is Dr. Han right for?
Dr. Han is a strong fit for families seeking a pediatrician who knows their child well over many years. Newborns, school-age children, and teenagers all find a consistent provider from birth through college. Families navigating ADHD, asthma, anxiety, developmental delays, or autism evaluations benefit from her broad clinical experience. Parents who want direct, seven-day access to their child's doctor will feel at home here.
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Frequently Asked Questions
Dr. Han treats a wide range of pediatric conditions. Her chronic disease management covers ADHD, asthma, depression, anxiety, eczema, and acne. She also screens and supports patients dealing with developmental delays and adolescent mental health concerns. Her clinical scope runs from newborn care through the college years.
Yes, Dr. Han holds board certification through the American Academy of Pediatrics. She also serves as a Fellow member of the American Academy of Pediatrics Orange County chapter. She recently earned certification to diagnose autism and plans to introduce a formal evaluation program at Grace Pediatrics.
Dr. Han screens every teen for mental health concerns at each visit. She follows up consistently with patients and families navigating anxiety, depression, and related conditions. Her goal is to catch concerns early and support adolescents with ongoing attention, not a single appointment.
Yes, Dr. Han recently earned certification to diagnose autism. She plans to introduce a formal autism evaluation program at Grace Pediatrics. Families who have concerns about their child's development can discuss an evaluation directly with her.
Dr. Han performs a broad range of in-office procedures herself. These include simple laceration repair, wart removal, foreign body removal, staple and suture removal, and medical ear piercing. She also personally performs AviClear acne laser treatments and Secret Duo RF microneedling and laser scar treatments.
Yes, Dr. Han sees patients from birth. She offers prenatal consultations for expecting families and home visits for newborns. She also provides infant feeding support. Newborn care packages are available as separate one-time fees.
Dr. Han speaks English and Korean. Families who prefer to communicate in Korean can do so comfortably during visits, calls, and text exchanges.
Dr. Han attended The Medical College of Georgia for medical school. She completed her residency in pediatrics at the Children's Hospital of Georgia. After training, she worked as a pediatric hospitalist at several Southern California hospitals, including Children's Hospital of Orange County, before founding Grace Pediatrics in 2014.
Doctor profile last updated March 21, 2026