Keeping Kids Happy and Healthy

General Pediatrician located in Mckinney, TX now servicing neighboring areas of Frisco, Prosper, Allen, Plano, Little Elm, and Celina, TX

Welcome to Happy Bun Pediatrics!

Welcome to Happy Bun Pediatrics where keeping kids HEALTHY is our PASSION!

Happy Bun Pediatrics is a personalized boutique practice where we really love getting to know the KIDS and FAMILIES.  We take pride in being family-friendly and making you feel more at ease.

Our expert board-certified pediatrician Dr. Chung believes every child is unique and deserves the HIGHEST QUALITY, personalized medical care.

As many of her established patient families know firsthand, Dr. Chung loves to take the time to build trust and hear from her patients!  Through positive interaction, Dr. Chung is able to provide quality individualized care that combines a holistic approach with evidence-based science.

Whether your child is currently a “BUN in the Oven”, or all the way to big high schoolers, Dr. Chung will strive to meet your children’s needs and build a partnership in keeping your kids HAPPY and HEALTHY.

In the office, Dr. Chung, MD, FAAP, and her staff provide comprehensive preventive care and sick care from newborns to young adulthood. The staff boasts a diverse array of experience and expertise to deliver effective treatment plans to address any health concerns.

Happy Bun Pediatrics offers a comprehensive suite of services, including:

If it’s time for your little one’s checkup, or they are not feeling well, partner with Dr. Chung at Happy Bun Pediatrics! To make an appointment, call the office directly to speak with our friendly staff or click the online appointment-request booking tool today!

Meet Your Doctor

Y.C. (Yu-Chen) Jennie Chung, MD, FAAP, is a board-certified pediatrician with 15 years of experience practicing Pediatrician in various settings, including hospitals, urgent care, and clinical offices.

Comprehensive Suite of Services

Newborn Care

Dr. Chung has additional experience taking care of newborns (premature or born on time!) as a NICU (neonatal ICU) physician. Meet with Dr. Chung to discuss any newborn issues or concerns.

Well-Child Care

Regularly scheduled visits to discuss achieving milestones, growth, and development. Also nutritional guidelines, vaccinations, and overall well-being.

Adolescent Care

Annual visits to ensure our teenagers are growing well. Nutritional advice. School routines. Behavioral concerns. Mental health. Vaccinations.

Schedule a Meet and Greet!

Are you a new or expecting parent? Schedule a meet and greet today!


We totally love Dr. Chung. She is knowledgeable and answers all our questions patiently. We would totally recommend Dr. Chung if you want excellent care for your little one.

Kanupriya P.

Dr Chung is the best, most compassionate, most mindful provider for my kid. We love her and don’t mind the extra drive to have the opportunity for her to care for my kid.

Amy T.

Dr. Chung is excellent! She has been our Pediatrician for years. WE LOVE how nice and how gentle she is with the kids. She listens to our concerns. Highly recommend  to be your children’s Pediatrician.

Susie C.

Our Services

Happy Bun Pediatrician is a McKinney Pediatrician that offers a comprehensive suite of services, including:

Newborn Care

If you’ve recently had a baby, newborn care provides a way to assess their health and well-being, feeding habits, and development.


Vaccines provide an important line of defense against potentially serious health problems caused by viruses and bacteria.

Sick Visits

When you or your kids aren’t feeling well and home care isn’t working, you can count on pediatrician Jennie Chung, MD, FAAP, for help.

Well-Child Exams

Routine well-child exams present an opportunity to update immunizations, refill prescription medication, and address unusual symptoms or other health concerns.

Our Blog

Make an Appointment Today!

To make an appointment for your child at the practice in McKinney, Texas, call the office or click the online booking tool today.



Monday – Friday

9:00am – 4:30pm




9:00am – 4:30pm




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