Pediatrics

Pediatrics

Nothing is more important to parents then their children’s health and well-being. At St. Jude Heritage Medical Group, our pediatricians understand that very well. In fact, nothing is more important to us than keeping children healthy.

Our board certified pediatricians offer comprehensive care for the needs of your child at every age, from newborn care to sports physicals. In addition to the treatment of illness and injuries, our physicians specialize in prevention and helping children develop the habits that lead to a lifetime of health. We’re also committed to giving you the information and advice you need to improve your child’s physical and emotional well-being: whether that means tips on avoiding ear infections or help with developmental disorders.

We not only offer outstanding care, we make it convenient:

  • Five locations to choose from
  • Same day appointments
  • A very useful Nurse Advice Line to answer your questions when your doctor’s office is closed
  • After-hours care for evenings, weekends and holidays

And if more specialized care is needed, we offer a wide range of experts in children’s health, from pediatric dermatologists to specialists in youth sports injuries.

St. Jude Heritage Medical Group is proud to be a CHOC Children's Community Partner.
Click here to read more!

Pediatric Speech Therapy Services

Meet Our Doctors

Marienelle Banez MD (714) 577-6677
Pediatrics (Board Certified)

Mon. & Fri., 8:30 a.m. - 5 p.m.; Tues. & Thurs., 8:30 a.m. - 4 p.m.; Wed., noon - 4 p.m.

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Office :
4300 Rose Drive, Suite C
Yorba Linda, CA 92886
Lauren Choi DO (714) 528-4211
Pediatrics (Board Certified)
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Office :
4300 Rose Drive
Yorba Linda, CA 92886
Larissa Isterabadi MD (714) 577-6677
Pediatrics (Board Certified)

Monday, Tuesday & Thursday, 8 a.m. - noon & 1 - 6 p.m.

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Office :
4300 Rose Drive, Suite E
Yorba Linda, CA 92886
Jason Jilk MD (714) 974-2900
Internal Medicine
Pediatrics
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Office :
8078 E. Santa Ana Canyon Rd.
Anaheim Hills, CA 92808
Aeri Kang MD (714) 449-6990
Internal Medicine (Board Certified)
Pediatrics (Board Certified)

Mon. & Fri., 7:30 a.m. - 5 p.m.; Tues. 7:30 a.m. - 1 p.m.; Wed.-Thurs. 7:30 a.m. - 12 p.m.

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Office :
2720 N. Harbor Blvd., Suite 300
Fullerton, CA 92835
Jonathan Kramer MD (714) 577-6677
Pediatrics (Board Certified)
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Office :
4300 Rose Drive, Suite E
Yorba Linda, CA 92886
Steve Kwon MD (714) 577-6677
Pediatrics (Board Certified)
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Office :
4300 Rose Dr., Suite C
Yorba Linda, CA 92886
Lillian Lai-Wu MD (714) 577-6677
Pediatrics (Board Certified)

Monday, Wednesday & Friday, 8 a.m. - 5 p.m.; Tuesday, 8 a.m. - Noon

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Office :
4300 Rose Drive, Suite D
Yorba Linda, CA 92886
Sandra Mathur DO (909) 860-1144
Pediatrics (Board Certified)
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Office :
1514 S. Valley Vista Dr.
Diamond Bar, CA 91765
Tanya A. Mayfield MD (714) 577-6677
Pediatrics (Board Certified)

Monday, 1 - 6 p.m.; Tuesday, Thursday & Friday, 8 a.m. - 1 p.m.; Wednesday, noon - 5 p.m.

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Office :
4300 Rose Drive, Suite D
Yorba Linda, CA 92886
Michael I. Reuben MD (562) 697-6030
Pediatrics (Board Certified)
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Office :
731 N. Beach Blvd., Suite 175
La Habra, CA 90631
Christine Won MD (714) 449-6990
Pediatrics (Board Certified)
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Office :
2720 N. Harbor Blvd. #220
Fullerton, CA 92835