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Trevor Leroy Hoffman, MD

Photo of Trevor Leroy Hoffman, 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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About me

Hello, and welcome to my Web page! I am honored to serve as a Kaiser Permanente physician, and I strive to provide high-quality service to all our members.


I became a physician because I have always been interested in science and helping people. Advances in technology are rapidly changing the practice of medicine and genetics. I received my medical degree and a Ph.D. in molecular biology at the University of Pennsylvania. I completed a residency in pediatrics and my clinical training in genetics at The Children's Hospital of Philadelphia. Prior to working at Kaiser Permanente, I also did basic science research in genetics at UC Irvine. My dual training as a physician and basic scientist has helped me integrate new developments in genetic testing and treatment into my clinical practice.

About my practice

I am the medical director of the Southern California Kaiser Permanente Craniofacial Team. The Craniofacial Team cares for members with craniofacial disorders such as cleft lip and/or palate, hemifacial microsomia, microtia, micrognathia, craniosynostosis, velopharyngeal incompetence, and craniofacial syndromes (Apert, Crouzon, and others). The Craniofacial Team travels to Kaiser Permanente facilities all over Southern California to provide continuing care to our patients. I am also the medical geneticist for the Kaiser Permanente Orange County area. In this role, I see a wide variety of patients, including infants, children, and adults with various genetic and metabolic disorders. I work with a very talented team of genetic counselors who also see patients.

How I thrive

When I'm not working, I spend as much time as possible with my family. I volunteer as a youth soccer coach. For exercise, I swim at least twice a week. I enjoy cooking and eating healthy foods.

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My office

Languages spoken by medical staff

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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
Genetics Department
9961 Sierra Ave, Fontana, CA 92335

Contact information

  • Appointments/information
  • 1-833-574-2273 (1-833-KP4CARE) (toll free)
  • Information
  • 1-866-735-2922 (toll-free TTY for the hearing/speech impaired)

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My training, certifications and licensing

Medical school

University of Pennsylvania School of Medicine
Philadelphia , PA

Board certification

Clinical Genetics and Genomics

American Board of Medical Genetics and Genomics


American Board of Pediatrics

Medical training



Children's Hospital
Philadelphia , PA


Children's Hospital
Philadelphia , PA


Combined Pediatrics/Med Genetics

UC Irvine Medical Center
Orange , 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

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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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