Keith Miyamoto MD | Pediatrician | Whittier, CA | PIH Health
Keith S. Miyamoto

Keith S. Miyamoto MD


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4.8 / 5 (based on 320 Reviews) View 43 Comments

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Dr. Miyamoto became inspired to pursue pediatric medicine after a cousin died of leukemia at age seven. “I love children. They make me laugh and smile,” comments Dr. Miyamoto who enjoys “caring for the wide range of diseases and health issues” and cherishes the relationships he’s established with parents and families. A native of Arcadia, Dr. Miyamoto played water polo, basketball and swam in high school. Married for over 30 years, the father of three stays active with golf, running, skiing and mountain biking and belongs to ChildD, a nonprofit organization that provides resources to students with learning disabilities.

Office Information

Hospital/Group Affiliation

PIH Health Whittier Hospital

PIH Health Physicians





  • Pediatrics


Medical School

University of California School of Medicine (Irvine)


Children's Hospital of Los Angeles (CHLA Peds)


Children's Hospital of Los Angeles (CHLA Peds)

Board Certifications

  • Pediatrics


Patient Reviews

June 06, 2022
I have been taking all my children to Dr. Miyamoto for almost 20 years. He is an excellent doctor.
May 26, 2022
Dr. Miyamoto and staff, thank your help in seeing my son in a timely manner. We appreciate your assistance.
May 23, 2022
My daughter is 11 and still would prefer to see Dr Miyamoto over a female doctor even though her body is changing. She trusts him and is very comfortable in his care. Great doctor!
May 09, 2022
We love Dr. Miyamoto
April 26, 2022
Dr. Miyamoto and all of the staff are wonderful!
April 25, 2022
Dr. Miyamoto has been attending my children since they were born. He's an excellent Dr. Always friendly, listens to my concerns, gives good advice and explains everything well.
April 21, 2022
Was your child seen by this provider in a timely manner? I said no because this was their first visit with Dr Miyamoto. Are kids loved him at first site ????
April 19, 2022
Doctor was very calm and helpful in treating my daughter. Best doctor
April 18, 2022
As always, Dr. Miyamoto is very patience & knowledgeable to help my child.
April 12, 2022
its nice to go to a health provider who actually knows what they're talking about and can understand a wide range of children, including children with disabilities.
April 08, 2022
Staff was courteous and friendly, wait time was short.
April 07, 2022
My daughter has been to the pediatrics service at PIH Whittier for a year now. I am happy with the physician and back office staff. I've never had a negative encounter with staff until this visit. I was late by 13 minutes due to unexpected road construction on Colima Road; granted I am never late to an appointment. But, the woman who checked us in would not let it go! I felt as if I was being treated by an adult with authority who would "teach me a lesson" for being late. Here's the thing.. I was not rude and I understand that I was late, but this woman did not need to continue to be rude about it. She was not understanding instead she decided to tell me that next time I need to find another route to the office. Umm.. this is not my job. I don't come here daily. I come every few months. The next time I come, I'm pretty certain there will no longer be construction here. So really, it was unnecessary for this woman to provide a suggestion to my route to this office. It's bad enough that I did feel bad for being late and my daughter was not feeling all that great.. so this woman was literally the straw that broke the camel's back. Surely, I hope in her line of work she reconsiders her use of words and has more understanding and empathy.
April 07, 2022
He was very thorough, explained clearly spent enough time teaching and provided active listening
March 31, 2022
Dr. Miyamoto and staff are amazing!!
March 24, 2022
You can always count on Dr. Miyamoto and the nurses in his office. They are efficient, thorough and have great bedside manners.
March 17, 2022
Dr. Miyamoto is simply the best. He provides a calm demeanor and spends a good amount of time in the room answering questions.
March 15, 2022
Hi, this time, we got the same doctor and handled us really quickly, but usually, we have to wait a long time, so I think he's, the office trying to improve. Hopefully, next time, it's the same way. Thank you.
March 15, 2022
Respectful and timely
March 11, 2022
Dr. Miyamoto is a wonderful doctor. Always a pleasure to see him.
March 10, 2022
The group there is friendly and kind. The doctor and his nurse have been especially wonderful...they have been taking care of our kids for many years..I am so grateful to have them taking care of them and being so patient every visit when I've ever had any concerns!
March 08, 2022
I waited in the room for about 50 min. But he was great once he got to us. He answered every question we had and had great advice. He took time explained everything.
March 04, 2022
Luv Dr. Miyamoto and nurse (name removed)
March 03, 2022
Dr. Miyamoto is absolutely amazing! He spent a lot of time with my son, answered all our questions, and I never once had the impression he was rushed or in a hurry to get to the next patient.
February 11, 2022
Dr. Miyamoto is great, thank you
February 04, 2022
Dr Miyamoto was my pediatrician as a child, and I always remember him being so kind and thorough. When I had children of my own, there was no other doctor I would've trusted with their medical care.
January 31, 2022
Keith Miyamoto has been my child's pediatrician for 13 years. My son just turned 13 in December since he was born, he has always been very caring has taken plenty of time with my child addressed him directly, asked important questions listened intently and the care, from Dr. Miyamoto has... always been excellent and I always have a great deal of confidence that he will address all of our questions and concerns and... you know that he is... that my child is in great hands with him so, thank you Dr. Miyamoto.
January 14, 2022
We love Dr. Miyamoto and his team!
January 11, 2022
This was my first time seeing Dr. Keith S. Miyamoto. I must say, he is truly a great MD. He was kind from the beginning til the end. And when I say kind, I mean there was no judgmental looks or attitude. He did not speak to us in a condescending manner. He was polite and reassuring with my son and was extremely patient. I can keep going telling you how I finally found a doctor that made me and my husband, especially our son, feel great about our appointment. Thank you Dr. Miyamoto
December 28, 2021
We were greeted kindly and in a professional manner. [name removed], RN welcomed us and made us feel like we mattered. Extremely professional! Dr. Miyamoto was excellent. He spoke directly to my son. He let my son explain. He listened carefully. He put my teenager at ease. Dr. Miyamoto explained what was going on and about the medication. Great experience. Thank you
December 16, 2021
Dr. Miyamoto is the best! He is patient, kind and caring.
December 13, 2021
Dr. Miyamoto is great. I trust his advice and know that he listens to my input. Highly recommend him.
December 07, 2021
Dr Miyamoto is the best! He always takes the time to explain everything and always has my daughters best interest at heart. We love him so much. And his care for children shows in how he treats his patients. There's no one like him!
December 03, 2021
Dr. Miyamoto is the best of the best. He is always so efficient, takes his time each time, and always makes sure I understand what is being explained during my child visit. His office staff is always very nice, respectful, and helpful!
November 29, 2021
Okay, I think having my appointment with [name removed] and Dr. Miyamoto was overall very good. I felt like sometimes some of the questions, I felt like he wasn't empathetic enough, but overall I felt like he explained things in a very timely matter. He had very good bedside manners as well. One thing that I really appreciated him doing was warming up his hand before touching my daughter to examine - do a physical on her but yeah, I think overall, one of the things he could improve on is just being a little more empathetic, especially to some of the questions his patients have to ask, especially as new parents. Thank you so much.
November 22, 2021
Dr. Miyamoto is the best! He has been taking care of my kids for over 15 years. We love how he takes his time and really listens to the kids!
November 19, 2021
Dr. Miyamoto is very knowledgeable & caring. He is a good listener & always being so patience explaining to worry parents. Our boys are always very comfortable with Dr Miyamoto's care. Our boys are very lucky to have him as their pediatrician since birth.
November 09, 2021
All of my selections are for 4. I think Dr. Miyamoto is a great child provider. And I appreciate his care. Thank you very much.
November 04, 2021
Great service, great doctors. Keep it up.
November 02, 2021
Dr Miyamoto is always fantastic and always so kind and seems so caring. The nurse we typically see is also amazing and fantastic and seems so empathetic. I'm disappointed to say that the nurse who attended by baby this last visit seemed annoyed and spoke to me curtly. I hope this feedback will assist in aiding this individual to reflect on their tone with patients, as I myself work in a hospital, I am required to do the same.
November 01, 2021
Best Doctor
November 01, 2021
We were seen an hour past our scheduled appointment time. Understandable that people have needs that may require additional time.
October 18, 2021
Thank you for setting up an appt quickly
October 11, 2021
I love the staff and the providers in this office, but I have noticed that there is no enforcement of mask mandates and no screening of patients before they come in the building or even in the waiting room. There were parents in the waiting room without masks on and I have noticed this is a trend in recent weeks, so it is concerning to me.
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