Ernesto Ong MD | Pediatrician | Hacienda Heights, CA | PIH Health
Ernesto G. Ong

Ernesto G. Ong MD


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4.7 / 5 (based on 313 Reviews) View 54 Comments

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Office Information

Hospital/Group Affiliation

PIH Health Whittier Hospital

PIH Health Physicians







  • Spanish



St Josephs Hospital and Medical Center - Paterson, NJ


University of Maryland School of Medicine (Baltimore)


St Josephs Hospital and Medical Center - Paterson, NJ

Medical Education

Emilio Aguinaldo College

Board Certifications

Pediatrics (General Cert)


Accepted Insurance Plans and Physician ID Numbers

  • Aetna - 4488419

  • Anthem Blue Cross (Phone Enrollment) - 0001125

  • Anthem Blue Cross (Phone Enrollment) - 0AF125

  • Blue Shield - 00A522720

  • Blue Shield 65+ - N/A

  • Blue Shield IPA # - IPA0686GH

  • Health Net - 3368-060188

  • Health Net Senior - N/A

  • Humana - N/A

  • United Healthcare - 0232470045

Accepted insurance plans are subject to change without notice. Please contact your insurance provider and the doctor's office to verify your coverage.

Patient Reviews

November 18, 2021
Dr. Ong It's a very well spoken and honest doctor in my point of view. He goes straightforward tell us whether it's recommend or not recommend it, and he does not waste time on treatment when the child needs medication right away to prevent able to stop from getting worse. I do recommend is Dr. Ong recommended taking so many family members and also to my grand child with my granddaughter to receive my care give him most a 10. Thank you.
November 17, 2021
Dr. Ong is a great pediatrician. I would recommend anyone looking for a pediatrician for their child.
November 15, 2021
Dr. Ong is awesome he always treats my kids with love and respect.
November 12, 2021
Great experience. Never any issues great staff always kind.
November 11, 2021
Dr. Ong listens and cares about his patients. He does a great job following their health history and has a way to speak to my son to help him understand what he'll need to do and why etc...
October 25, 2021
Excellent service
October 14, 2021
Dr. Ong and his staff are always above and beyond. I love that the staff remember all three of my kids and I would travel 20 miles to see Dr. Ong and I would continue going to him because of his service.
October 11, 2021
Thank them Dr. Ong and entire staff for such care.
October 07, 2021
We love Dr Ong and the staff
October 07, 2021
We love Dr. Ong and we have referred him to our friends and family for him as a personal physician. Thank you.
September 21, 2021
I love Dr Ong he always listens to my concerns no matter how small or big. My baby loves him too and thats what makes it even better. Most of his staff is super friendly and they always fit me in right away when I need an appointment.
September 20, 2021
Dr. Ong is a awesome doctor, who cares!!!
September 20, 2021
Dr Ong is truly the best. He even goes out of his way to call and check on his patients.
September 07, 2021
As Dr.Ong walked in to the room he immediately diagnosed my son with "anxiety" and handed me a paper to read up on how to handle stuttering. Not once did he ask about my concern. He didn't ask for examples of stuttering, how often, how does my son show frustration etc. Ong did not take the time to speak to my son to see if he can hear him stutter. Instead he told my son count to ten and if you don't I'm going to give you a shot. He threatened him. I've been going to Dr Ong for a few yra now but I was so upset yesterday. I have worked with children for many years and educated to know that I have validated concerns. Very very disappointed
August 30, 2021
Excellent and professional service from this office as always!
August 27, 2021
Great Dr and staff
August 25, 2021
We absolutely LOOOVE dr Ong. He's been our primary for all 3 of my boys! He's the best!
August 16, 2021
Dr. Ong, the nurses and office staff are always very attentive, kind and patient.
August 13, 2021
Very friendly and respectful, always on time and very kind and very helpful with other with inmate patience and everything. I recommended anyone with my family and friends.
August 06, 2021
Dr. Ong is very professional and detailed in the care of my son consistently for 10years.
August 05, 2021
It is the good Doctor and staff.
August 04, 2021
Doctor is very thorough
August 02, 2021
Dr. Ong knows his patient well and is very patient and takes his time to listen and address any concerns or answer any questions we may have.
July 29, 2021
Dr. Ong and office staff are wonderful and my boys always love to visit.
July 28, 2021
Office staff, can most improve a by waiting for the patient to enter the patient room before the start getting stats. Not doing it in the lobby, simply because no one is in the lobby. They need to be more patient and not rush the visit. Thank you.
July 02, 2021
Love Dr. Ong and PIH
June 23, 2021
Dr. Ong is a great doctor who we have been seeing for the past 10 years, but what sets them apart from any pediatric office is the kind and friendly office staff. They are 50% of the reason I keep going back!! keep up the good work!
June 23, 2021
Super clean and fast service. Great team!
May 17, 2021
Dr. Ong is amazing and doctor. He's always very generous, kind. Both of my children feel very comfortable and happy with the service that they receive from their doctor. And I would highly recommend him to all of my family and friends.
May 17, 2021
Staff, nurses and Dr.Ong very friendly and professional.
April 05, 2021
Friendly and accommodating staff
March 29, 2021
Everyone was so friend! Dr. Ong was so great with my son and answered all my questions. He even gave my son a book. Love this office and staff!
March 29, 2021
The staff and physician were very patient and courteous.
March 26, 2021
Well, I want to say that the doctor is highly qualified, respectful, patient, who listens to me, who listens to my things that my children have, we have been going to the doctor for many years and we feel greatly blessed to have him as a pediatrician to my children, thank you all, all the nurses are quite kind and polite,respectful, thank you.
March 25, 2021
Love the staff! All very friendly ??
March 22, 2021
Always have good experience with PIH
March 11, 2021
Dr. Ong is always attentive, shows he cares for my child's health and is always willing to answer any questions or concerns. His schedule is always open for any delicate appointments. I really appreciate his professionalism.
March 08, 2021
The only person that was a bit rude was the nurse that took the info in the room
March 03, 2021
Dr.Ong is gentle and knowledgeable.
March 03, 2021
Check was a problem.
February 24, 2021
Very clean and safe.
February 11, 2021
Dr.Ong is very patient and attentive to patient's needs or concerns. Very good.
February 10, 2021
Love Dr Ong, had a much better experience with him than our previous provider. We are so happy we found this Dr.
February 01, 2021
Dr. Ong and the office staff care about the families they work with. It's always a nice experience to go in. They listen to my concerns, answer my questions, and offer advice. Dr. Ong has been with us since my daughter has been born. The front desk ladies are always smiling. They know me when I call. Which is special. The medical stuff is friendly and makes my daughter feel comfortable.
January 28, 2021
We've never been happier with Dr. Ong from the beginning to the last that we're there. He's always great.
January 20, 2021
Dr. Ong is always thorough in his examination and well trusted.
January 18, 2021
Dr. Ong and his staff are amazing like always!
January 15, 2021
Everything was really great. Everyone was professional and I was the great office to take my newborn. Thank you.
January 15, 2021
Very understandable, time concerned, call if I needed help, medicine recommended, really good advice for health problems, and good time wait
January 11, 2021
Best Pediatrician and office!
January 07, 2021
Dr. Ong is always the best! He truly cares about the kids. The staffs and nurses are also great!
January 06, 2021
We were able to make and appt sameday and were seen immediately. Dr Ong is attentive, experienced and clearly explains what is required.
January 06, 2021
He is so sweet with my child love his attentiveness
January 04, 2021
Excellent service always
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