Meet the Doctors & Staff

All professionals at Hyde Park Pediatrics maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.

Pictured Below: (Back Row -left to right) Carla R., Becky V., Danielle C.,Trisha Y.,
(Middle Row- left to right) Margaret T., Kasey M., Destiney W., Jenn E., Sharon N.,
(Front): Veronica W.


Willie Ng, MD

Dr. Ng has been practicing at Hyde Park Pediatrics for 21 years. He graduated from medical school at the Federal University of Pernambuco in Brasil. He is formally trained in both General Pediatrics and Pediatric Cardiology. Dr Ng has a special interest in travel medicine and cardiology. He enjoys traveling, photography, and watching movies. Dr Ng is married and has 3 kids.


Evelyn Jones, MD

Dr. Jones has been with Hyde Park Pediatrics since 2009. Dr Jones completed medical school at Wright State University. Her residency was completed at Rainbow Babies Children's Hospital. Dr. Jones enjoys swimming, running, and spending time with her family.



Kate Balkowiec, MD

Dr. Balkowiec has been with Hyde Park Pediatrics since 2014. Dr Balkowiec attended Warsaw University School of Medicine. She completed her residency training at the University of South Carolina. 


Kathy Sorger, MD

Dr. Sorger returned to Hyde Park Pediatrics in 2016. She has an interest in well child care, ADD/ADHD, and newborn care. In her free time she enjoys traveling and spending time with family.



Gregg Kottyan, MD

Dr. Kottyan attended Duke University where he obtained his bachelor's degree in Biology and Chemistry. He then moved to Cincinnati for good, attending the University of Cincinnati College of Medicine for his medical degree before completing a Pediatric residency and Sports Medicine fellowship at Cincinnati Children's Hospital. He has a special interest in sports injuries, obesity management and adolescent health. In addition to routine pediatric primary care, Dr. Kottyan can manage most non-surgical orthopedic problems including sprains, strains, fractures, concussions and chronic injuries or pain. In his spare time, Dr. Kottyan enjoys woodworking, playing the piano, attending sporting events and spending time with his two children.


Lactation Consultant

Bethany Hanser, IBCLC, ICCE

International Board Certified Lactation Consultant

Child Therapist

Henry Ludwig, I.P.C.C., B.C.P.C.

APA Board Certified
Clinical Diplomat International Academy of Behavioral Medicine