Keith S. Miyamoto

Keith S. Miyamoto MD

Specialties:

Pediatrics
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4.8 / 5 (based on 165 Reviews) View 32 Comments

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562.947.9399

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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

Profile

Gender

Male

Specialties

  • Pediatrics

Education

Medical School

University of California School of Medicine (Irvine)

Internship

Children's Hospital of Los Angeles (CHLA Peds)

Residency

Children's Hospital of Los Angeles (CHLA Peds)

Board Certifications

  • Pediatrics

Video

Patient Reviews

April 06, 2026
Dr. Miyamoto is an extraordinary pediatrician and we trust him with our children's care.
April 03, 2026
Hi, yes, our only concern is that we used to have really great nurses. They were amazing with our daughter. They were very friendly, super animated, and every time they did their vaccines, they were super quick and gentle. I swear she barely cried. Most recently, the last few visits, we have a new nurse. Her name is (name removed). The first time it was not a pleasant experience. She was very rough. I think her exact words were to bear down when I held our daughter for her shot. And she seemed to be very nervous when giving the shots, and my daughter screamed a lot. If we didn't have such great nurses before then, since her birth at your office, we would think this was normal, but I don't think it is. We miss our old nurses. We'd love to have them back. I don't have their names on me to tell you. They were young, they were perky, they were fun, they were so nice and so sweet and gentle with (PHI removed). And this new nurse, I literally called before last appointment to ask if we couldn't have her and asked for someone else. We did feel uncomfortable requesting someone else when we went in this last time. She was a bit more gentle and ?
March 20, 2026
Great medical office and staff
February 09, 2026
I was very impressed that the nurse took us to get the x-rays done and went to pick us up and everything was connected and we were able to get results the same day, one stop shop. That was amazing. And everybody was kind, professional, including the doctor. Very, very much appreciate the experience I had on this day. Thank you.
February 02, 2026
Thank you Dr. Miyamoto for always showing compassion and empathy along with amazing bedside manner to myself and my children. Worth the 40min drive to see Dr. Miyamoto!
January 29, 2026
Dr. Miyamoto is a wonderful pediatrician. I trust him with the lives of my children any time something is airy. He is very knowledgeable and very compassionate and has so much empathy. He listens and he truly does care. I wouldn't ever trust another doctor with my kids. He is definitely cherished amongst our family.
January 27, 2026
Great experience and all staff were very welcoming.
January 26, 2026
best doctor
January 08, 2026
The nurse who gave the vaccines seemed a little stressed and not as experienced as the previous nurses. She seemed a bit frustrated and not as friendly when my baby kept spitting up the oral vaccine at her 2 month visit. She also kept referring to my baby as him instead of her (which showed a lack of detail and interest in the patient). The several times before we had nurse (name removed), and oh my goodness, she was amazing!!
December 08, 2025
Dr. Miyamoto is great. He was my pediatrician growing up and is now my daughter's. I trust his opinion always. His staff is also so great.
December 05, 2025
Dr. Miyamoto and his staff is and always has been really phenomenal and really open to any of the questions that we have and also his bedside manners are amazing as well as the staff. I don't have anything that could be improved but overall it's been really great just to have a really caring doctor and staff.
November 20, 2025
Dr. Miyamoto has always provided the absolute best care to my children. I am confident with his recommendations, annual wellness check ups and treatments. I appreciate the time he takes to explain and answer all of my questions. My children also feel comfortable and that makes me grateful.
October 31, 2025
My son waited 40-45 after appointment time to be seen by doctor. Then after the exam, he waited approximately 30 minutes for shots, paper work. As directed, my son arrived at 4:05 pm for a 4:20 pm and left at 6:00 pm. Over scheduling patients does not benefit the doctor, staff, and more importantly the patient. I understand things get busy and unexpected situations occur with patients scheduled before, but leaving a patient in the exam room for 40 minutes without communicating the expected wait time for the doctor is uncomfortable for the patient and unprofessional.
October 16, 2025
Dr. Miyamoto is amazing. He always listens to our concerns and ask questions to ensure his understanding.
October 13, 2025
I scheduled an appointment for greet and meet with Dr. Miyamoto as I am 35 weeks pregnant and I was looking for a pediatrician to schedule first appointments once the baby is born. Dr. Miyamoto was amazing in answering. All of my questions did not make me feel rushed, and I loved the fact that he provided a lot of data driven rationales to his answers.
September 19, 2025
Very happy with the service offered, especially the punctuality of my appointment.
September 09, 2025
Dr. Keith Miyamoto is the most knowledgeable and thorough pediatrician we've ever experienced. He provided us with detailed information and solutions for issues regarding our son. His previous pediatrician only spoke in generalities and never gave us solid, usable information or a specific health plan to follow!
September 09, 2025
The wait time was way too long for a 3 year old. We didn't wait long in the lobby, however waited an hour to see the doctor in the exam room.
September 05, 2025
I want to express my heartfelt gratitude to Dr. Miyamoto and the entire PIH team for the swift and compassionate care you provided for my daughter. Your prompt attention means so much to us during this time. Thank you for your kindness.H team for the swift and compassionate care you provided for my daughter. Your prompt attention means so much to us during this time. Thank you for your kindness.
August 28, 2025
Dr. Miyamoto is one of the best pediatricians in the business. He listens to your concerns and explains things carefully.
August 26, 2025
Dr Miyamoto was very patent and thorough. He did not make you feel rushed in any way. He made us feel comfortable.
August 21, 2025
Dr. Miyamoto is excellent!
August 07, 2025
Waited 2 hrs past our scheduled time, they need to be more respectful of patient's time. Children stuck in a room for that long is not ideal. We wouldn't have been seen if we were two hours late therefore patient should not be waiting past two hrs to be seen and diagnosed. Also this was not the first time this happens.
July 28, 2025
Dr. Miyamoto was amazing during our first visit to establish care for my child. He was patient, attentive, and made us feel completely at ease. He took the time to answer all of our questions and showed genuine care for my child's well-being. We're very grateful to have found such a kind and knowledgeable provider!
July 07, 2025
My son and I were waiting for over an hour to be seen after our scheduled appointment time and he missed that my son had a skin infection. He rescheduled an appointment later in the week and another doctor discovered that my son was uncomfortable due to skin infection.
June 23, 2025
Amazing care
June 23, 2025
Dr. Miyamoto has been my children's doctor since they were born over 18yrs ago. Has always been an excellent and positive experience with him. I would highly recommend him to everyone.
June 06, 2025
Great experience!! Dr. Miyamoto is wonderful!!
June 05, 2025
Dr. Miyamoto is our daughter's PCP. We really enjoyed having him be there for our son. He spent a lot of time, was very descriptive, and listened to our concerns. Thank you, Dr. Miyamoto and staff, for all that you do.
June 02, 2025
Dr Miyamoto has always been so great to our family
May 23, 2025
Dr. Miyamoto is very thorough he take his time assessing his patients and is very knowledgeable in diagnosing. I'm glad I have a pediatrician I can trust. Not to mention his staff is very kind and patient. Great team.
May 22, 2025
I love Dr Miyamoto. He is the best!! He always takes his time when he's with my children. I never feel rushed during our visit. He answers all my questions and he's great with my kids. I couldn't asked for a better doctor. Thank you Dr Miyamoto!
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