Lisa Hertz, M.D., earned her Doctor of Medicine from Harvard Medical School and then completed her internship and residency in Internal Medicine and fellowship in Gastroenterology at UCLA. Dr. Hertz is board certified in both Internal Medicine and Gastroenterology.
Lisa Hertz, M.D., earned her Doctor of Medicine from Harvard Medical School and then completed her internship and residency in Internal Medicine and fellowship in Gastroenterology at UCLA. Dr. Hertz is board certified in both Internal Medicine and Gastroenterology.
The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.
Above and beyond routine care. I was treated as an individual that needed medical care, not just a “case”. She explained things in terms that I could understand!
(6 days ago)
Jun-2026
Dr. Hertz is wonderful!
(1 week ago)
Jun-2026
Great job Nicky seen procedure went well. Nurse and anesthesiologist was wonderful.
(1 week ago)
Jun-2026
Dr . Hertz is a wonderful doctor I will miss her .when she retires . I respect her as a person and a great doctor
(1 week ago)
May-2026
Dr. Hertz is an exceptional provider. She is attentive, kind and thorough. I feel well cared for and always leave with a care plan.
(1 week ago)
May-2026
Listens well
(1 week ago)
May-2026
I’ve been seeing Dr Hertz for almost 20 years now. Been extremely satisfied with her care. Excellent and thorough with respectful demeanor.
(2 weeks ago)
May-2026
Dr Hertz is professional and friendly, explaining everything in details that I can understand.
(2 weeks ago)
May-2026
Awesome doctor!
(3 weeks ago)
May-2026
Team work during colonoscopy was outstanding!
(3 weeks ago)
May-2026
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GI-Los Alamitos
4772 Katella Ave Suite 200 Los Alamitos, CA 90720
Lisa Hertz, M.D., earned her Doctor of Medicine from Harvard Medical School and then completed her internship and residency in Internal Medicine and fellowship in Gastroenterology at UCLA. Dr. Hertz is board certified in both Internal Medicine and Gastroenterology. She has been in private practice in the Long Beach/Los Alamitos area since 1989 and has extensive experience in treating a wide range of gastrointestinal illnesses with a focus on promoting thorough and complete healing through personal, intuitive and research-based care. Special areas of interest include inflammatory bowel disease (Ulcerative Colitis and Crohn’s disease) as well as colon cancer screening.
Dr. Hertz is currently a member of the Southern California Society of Gastroenterology, the Crohn’s and Colitis Foundation and the Long Beach branch of the American Medical Women’s Association. She has served as Chair of Gastroenterology at St. Mary’s Medical Center and currently sits on the medical executive committee at the Memorial Outpatient Surgery Center of Long Beach.
In addition to practicing medicine, she is a devoted mother to her two daughters Ali and Chloe, as well as her four legged children Ruby, Peanut and Betsy. She enjoys working in her garden at home and being an advocate for environmental and animal rights issues.
Above and beyond routine care. I was treated as an individual that needed medical care, not just a “case”. She explained things in terms that I could understand!
Dr. Hertz is wonderful!
Great job Nicky seen procedure went well. Nurse and anesthesiologist was wonderful.
Dr . Hertz is a wonderful doctor I will miss her .when she retires . I respect her as a person and a great doctor
Dr. Hertz is an exceptional provider. She is attentive, kind and thorough. I feel well cared for and always leave with a care plan.
Listens well
I’ve been seeing Dr Hertz for almost 20 years now. Been extremely satisfied with her care. Excellent and thorough with respectful demeanor.
Dr Hertz is professional and friendly, explaining everything in details that I can understand.
Awesome doctor!
Team work during colonoscopy was outstanding!