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Lawrence Isaac Harrison, MD

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My specialty:

My provider affiliation:
Kaiser Permanente physician

I speak: English

My gender: Male

Where I practice

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About me

Hello, and welcome to my Web page. I’m a staff radiologist at the Orange County Anaheim Medical Center. I’ve been with Kaiser Permanente for nearly 30 years.


I’m a native Southern Californian who grew up in the San Fernando Valley. I attended USC for my undergraduate work and received my medical degree from the Autonomous University of Guadalajara in Mexico. I was fortunate enough to have an eighth grade teacher who motivated me in my science studies and started my thinking about medicine as a career choice. Medicine provides me with the reward of constant intellectual challenge, and the gratification of trying to make a positive impact on the world.

About my practice

My practice consists of general diagnostic radiology, which includes using cross-sectional scanning technology such as CT and ultrasound, as well as nuclear medicine, mammography, and image-guided breast procedures. I also perform high-risk obstetric ultrasounds (level II obstetric ultrasounds) where there are known or suspected abnormalities in a fetus. While we have a very busy practice, I try to ensure that every member I see gets the time and personal attention he or she deserves.

How I thrive

I try to find time to go walking or jogging along the Santa Ana River trail or in the Anaheim Hills area. I enjoy playing golf with my colleagues, and an annual ski trip with friends rejuvenates my spirit. In 2008, my youngest daughter and I went on a medical mission to Honduras—it was a truly exciting, educational, and emotionally rewarding adventure. As an alumnus of USC, attending Trojan football games (including occasional road games) is a great way to keep feeling young and reconnect with many enjoyable memories. And now, as a grandpa, it's an amazing thing to watch my little grandchild growing up. I'm really looking forward to sharing fun times with him in the years to come.

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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
Radiology Department
3440 E La Palma Ave, Anaheim, CA 92806

Contact information

  • Advice/appointments/cancellations/messages
  • 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

Universidad Autonoma De Guadalajara-Medicine
Guadalajara , Mexico

Board certification

Diagnostic Radiology

American Board of Radiology

Medical training

Fifth Pathway


UC Irvine Medical Center
Orange , CA


Internal Medicine

Valley Medical Center
Fresno , CA



Veterans Affairs Medical Center
Fresno , CA


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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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

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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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