Summary

Dr. Lisa Hertz is a gastroenterologist and internal medicine physician who graduated from Harvard Medical School and completed their residency at UCLA Medical Center in 1987. With 42 years of medical experience, Dr. Hertz has developed extensive expertise in digestive health and comprehensive internal medicine care. They are fluent in both English and Spanish, helping to serve diverse patient communities.

Dr. Hertz practices at several locations throughout Los Alamitos and Long Beach, California, including UCI Health Los Alamitos, MemorialCare Long Beach Medical Center, and College Medical Center. They specialize in treating conditions such as colon polyps, hemorrhoids, and diverticular disease. Their procedural expertise includes performing colonoscopies and both upper and lower gastrointestinal endoscopies to diagnose and treat digestive disorders. Patients have given Dr. Hertz an average rating of 4.7 out of 5 stars.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.7
  • 42 years of experience
  • speaks English, Spanish
  • UCLA Medical Center
  • 10 written reviews
  • 2 specialties
  • 15 areas of expertise
  • 2 board certifications
  • 3 hospital affiliations
  • 5 office locations

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Lisa Hertz has 5 locations

Comprehensive Gi Care

4772 Katella Ave Ste 200Los Alamitos, CA 90720
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Memorialcare Outpatient Surgical Center Long Beach

3833 Worsham Ave Ste 200Long Beach, CA 90808
Mon7:00 am - 4:00 pm
Tue7:00 am - 4:00 pm
Wed7:00 am - 4:00 pm
Thu7:00 am - 4:00 pm
Fri7:00 am - 4:00 pm
SatClosed
SunClosed

Uci Health Los Alamitos

3751 Katella AveLos Alamitos, CA 90720

College Medical Center

2776 Pacific AveLong Beach, CA 90806

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Dr. Lisa Hertz, MDJan Seiler, APRNAshley Anderson, APRNChimdi Mfebe, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.7 
42 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English Speaks English
Los Alamitos , CAMontgomery , ALSacramento , CALittle Rock , AR
Med School: Harvard Medical School Med School: Georgia State University Med School: East Tennessee State University - Quillen College of Medicine Med School: Chamberlain University College of Nursing
Current Profile
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Insurance Plans Accepted by Dr. Lisa Hertz

  • Accepts Medicare

Medical Specialties

Dr. Lisa Hertz has the following 2 specialties

Specialty Expertise

Dr. Lisa Hertz has the following 15 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Bronchoscopy
  • Celiac Disease
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Colonoscopy
  • Constipation
  • Deep Vein Thrombosis
  • Hemorrhoids
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Sepsis (Blood Poisoning)
  • Ulcerative Colitis

Certifications, License, & Education

42 Years Experience

Dr. Lisa Hertz holds an expired medical license in the state of California.

Medical License

Medical Doctor with an expired medical license in the state of California that expired in 2026.

Education & Training

Residency

Completed their residency at UCLA Medical Center in 1987.

Medical School

Graduated from Harvard Medical School in 1984.

NPI Number

Dr. Hertz's NPI number is 1639237720.

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Frequently Asked Questions

Is Dr. Lisa Hertz accepting new patients?
Dr. Lisa Hertz is accepting new patients on Vitals. View Dr. Lisa Hertz's profile on Vitals to make an appointment.
Where is Dr. Lisa Hertz's office located?
Dr. Lisa Hertz's office is located at 4772 Katella Ave Ste 200, Los Alamitos, CA, 90720.
Does Dr. Lisa Hertz accept my insurance?
You can see the insurance plans that Dr. Lisa Hertz accepts on their Vitals profile.
Which hospitals is Dr. Lisa Hertz affiliated with?
Dr. Lisa Hertz is affiliated with Uci Health Los Alamitos, Memorialcare Long Beach Medical Center, and College Medical Center.
What languages does Dr. Lisa Hertz speak?
Dr. Lisa Hertz speaks English and Spanish.

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