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John E. Sasaki, MD

Photo of John E. Sasaki, MD

My specialty:

My provider affiliation:
Kaiser Permanente provider

I speak: English

My gender: Male


Find out about

Where I practice

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Available services
  • Emergency service
  • Urgent care services
  • After-hours services
  • Pharmacy services
Unavailable services
  • No emergency services
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  • No after-hours services
  • No pharmacy services
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About me

Hi. I’m Dr. John Sasaki, a pediatrician with Kaiser Permanente’s Lancaster office. I enjoy working with youngsters and teens both in and out of my office, perhaps because I am just a kid at heart. My wife and I have four children, so I can empathize with parents facing poopy diapers, as well as those dealing with the teenage years. Don’t worry; they’ll make it through okay.


As a youngster, I always looked up to my pediatrician. Despite a busy schedule, with two offices, he took the time to listen to me and offer sound advice. After seeing how he practiced medicine and how he enjoyed what he did, I decided to follow in his footsteps and study pediatrics. I went to medical school in Chicago, spent some time aboard an aircraft carrier in the Navy and then went on to serve my pediatric internship at Los Angeles County/USC Medical Center and my residency at Harbor-UCLA Medical Center. With both Bruin and Trojan heritage, I just can’t lose when the big cross-town game is played! With Kaiser Permanente I have found a group that works really well together. I enjoy being a part of Kaiser Permanente’s student outreach program that encourages middle school students to pursue medical careers. I’d like to think someday, I’ll have the same influence on a youngster that my pediatrician had on me.

About my practice

Working with children and adolescents helps keep me young. I enjoy serving them and their parents. Whether it is the sniffles or something more serious, I’ll take the time needed to treat both the symptoms and psyche with care and concern.

How I thrive

Working with Kaiser Permanente has allowed me to find a good work/life balance. While I love my practice and my members, I also enjoy spending time with my family, participating in running and jogging events, and keeping stretched out practicing karate. I am constantly amazed by the energy and resiliency of children. Seeing them blossom and develop into fully functional young adults is one of the key things that help me thrive.

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My office

Languages spoken by medical staff

Help is available in your language. Learn more.

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My provider type

Physicians and Surgeons

Medical groups and plans

Southern California Permanente Medical Group

List Header Plans Accepted
  • Exclusive Provider Organization (EPO)
  • HMO
  • Medi-Cal Managed Care
  • Point-of-Service Plan (POS)
  • Senior Advantage/Medicare Cost
Pediatrics Department
43112 N 15th St, Lancaster, CA 93534

Contact information

  • Advice/appointments/cancellations/messages
  • 1-833-574-2273 (1-833-KP4CARE) (toll free)
  • After-hours advice
  • 1-833-574-2273 (1-833-KP4CARE) (toll free)
  • California Relay Service
  • 711 (TTY for the hearing/speech impaired)

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My training, certifications and licensing

Medical school

Rosalind Franklin University of Medicine and Science
North Chicago , IL

Board certification


American Board of Pediatrics

Medical training


Naval Hospital
Oakland , CA


Los Angeles County/University of Southern California
Los Angeles , CA


Harbor-UCLA Medical Center
Torrance , CA

Joined Permanente Medical Group


Active license information

License number


License type


License issuing state


National Provider Identifier (NPI)

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My hospitals

This information is not available at this time.

To find:

  • a provider's office hours, search our facility directory
  • providers in your plan or accepting new patients, call 1-800-464-4000 (toll free) or 711 (TTY for the hearing/speech impaired)

The information in this online directory is updated periodically. The availability of physicians, hospitals, providers, and services may change. Information about a practitioner is provided to us by the practitioner or is obtained as part of the credentialing process. If you have questions, please call us at 1-800-464-4000 (toll free). For the hearing and speech impaired: 1-800-464-4000 (toll free) or TTY 711 (toll free). You can also call the Medical Board of California at 916-263-2382, or visit their website.

We want to speak to you in the language that you’re most comfortable with when you call or visit us. Qualified interpreter services, including sign language, are available at no cost, 24 hours a day, 7 days a week during all hours of operations at all points of contact. We do not encourage the use of family, friends or minors as interpreters. Only the services of interpreters and qualified staff are used to provide language assistance. These may include bilingual providers, staff, and healthcare interpreters. In-person, telephone, video, and alternative modes of communication are available. Learn more about interpreter services

If you would like to report an error in provider or facility information, please contact us.

Kaiser Permanente enrollees have full and equal access to covered services, including enrollees with disabilities as required under the Federal Americans with Disabilities Act of 1990 and Section 504 of the Rehabilitation Act of 1973.

Kaiser Permanente uses the same quality, member experience, or cost-related measures to select practitioners and facilities in Marketplace Silver-tier plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business.The measures may include, but are not limited to, HEDIS/CAHPS performance, member/patient complaints, patient safety scores, hospital quality measures, and geographic need. Members enrolled in KFHP Marketplace plans have access to all professional, institutional and ancillary health care providers who participate in KFHP plans’ contracted provider network, in accordance with the terms of members’ KFHP plan of coverage. All Kaiser Permanente Medical Group physicians and network physicians are subject to the same quality review processes and certifications.
Kaiser Permanente uses the same geographic distribution consideration to select hospitals in Marketplace plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. Accessibility of medical offices and medical centers in this directory: All Kaiser Permanente facilities are accessible to members.


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