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 above: (Back row - left to right) Kelsey L., Carla R., Tammy B., Tre'ci C.,
(Front row- left to right) Jen S., Pat C., Veronica G., Megan C., Sharon N.,


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.

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 three children.

Kate Balkowiec, MD

Dr. Balkowiec has been with Hyde Park Pediatrics since 2014. Dr Balkowiec attended the 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.

Katarina Schneider, CNP

Katarina joined the practice in October 2019. She graduated first from Northern Kentucky University with a bachelor's degree in biology. She then studied nursing at the University of Cincinnati and went on to work at Cincinnati Children's Hospital while she obtained her master's degree. In 2017 she began her career as a nurse practitioner working with adults but quickly realized she missed caring for infants and children. She is very happy to return to her true love of pediatrics. Katarina was born and raised on the west side of Cincinnati. She enjoys being outdoors and spending time with her friends and family.

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

Hyde Park Office

3330 Erie Ave.
Cincinnati, Ohio 45208
513-979-0569 (fax)

Kenwood Office

7661 Montgomery Rd.
Cincinnati, Ohio 45236
513-891-7696 (fax)

Please call us at (513) 321-0199, including after hours to reach the on-call provider. After hours, if you are not automatically connected to the answering service, PerfectServe, please call them directly at 1-877-844-3492
*Note that all calls go to the Hyde Park location for scheduling and triage 

Hyde Park Hours

Monday - Friday:

9:00 am - 5:00 pm


8:30 am - 11:00 am



Kenwood Hours

Monday - Friday:

9:00 am - 5:00 pm

Saturday, Sunday:


**Typically, 2-3 well check appointments will be scheduled for each Saturday. The remaining appointments are scheduled same-day for sick visits. Primarily Kenwood patients are certainly welcome to be seen in Hyde Park on Saturdays. Phone lines open at 8:30am.

During the week we accept same-day appointments for both sick and well visits. Please call at the beginning of the day (8:30 am) for availability.

PLEASE NOTE: The office closes daily from 12pm-1pm for lunch and the doors will be locked. Prescription pick up and form drop off will be accepted during regular hours only.