Summary

Dr. Gregory Harmon specializes in gastroenterology, focusing on digestive system disorders and preventive care. They earned their medical degree from the University of Chicago Division of Biological Sciences Pritzker School of Medicine and completed residency training at both UC San Diego Medical Center and Northwestern University. Dr. Harmon pursued fellowship training in gastroenterology at Northwestern University Medical School, building expertise in internal medicine as well. With 27 years of clinical experience, they hold board certification in internal medicine from the American Board of Internal Medicine. Dr. Harmon communicates with patients in English.

They practice at UCI Health Los Alamitos and sees patients in Torrance, California. Dr. Harmon treats conditions such as colon polyps, hemorrhoids, and diverticular disease. They perform colonoscopies and lower gastrointestinal endoscopy procedures to diagnose and monitor digestive health issues. Dr. Harmon also conducts pathology tests to provide comprehensive care for their patients. Patients rate Dr. Harmon 4.8 out of 5 stars on average.
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Quick Facts

  • accepting new patients
  • 4.8
  • 27 years of experience
  • 49 insurance plans accepted
  • speaks English
  • Univ Ca San Diego Med Ctr, Gastroenterology Northwestern Univ Med Sch, Internal Medicine
  • 198 written reviews
  • 1 specialty
  • 16 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location

Office Location

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Dr. Gregory Scot HarmonJan Seiler, APRNBhavana Akotia, PA-CAshley Anderson, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.8 
27 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English Speaks English
Torrance , CAMontgomery , ALTempe , AZSACRAMENTO , CA
Med School: U Of Chgo Div Of Bio Sci Pritzker Sch Of Medicine Med School: Georgia State University Med School: Charles R Drew University Med School: East Tennessee State University - Quillen College of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Gregory Scot Harmon

  • Aetna
  • Aetna - HMO
  • Ambetter
  • Anthem Blue Cross
  • BLUE CROSS of CALIFORNIA
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • Blue Shield of California - Medicare
  • Bright Health
  • CareFirst Blue Cross Blue Shield - Medicaid (Managed)
  • CHAMPVA
  • Cigna
  • Contra Costa Health Plan
  • Health Alliance
  • Health Net
  • Health Net - HMO
  • Humana
  • Humana - HMO
  • Humana - Medicare
  • Independence Blue Cross
  • Kaiser Permanente
  • L.A. Care Health Plan
  • L.A. Care Health Plan - HMO
  • L.A. Care Health Plan - Medicaid (Managed)
  • Magellan Health
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • Molina Healthcare
  • Mutual of Omaha
  • Nippon Life Benefits
  • Oscar Health Insurance
  • PreferredOne
  • Providence Health Plans
  • SCAN Health Plan
  • SCAN Health Plan - HMO
  • STLDentalPlan| LLC
  • Tricare
  • Triwest Healthcare Alliance
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • US Family Health Plan
  • Wellcare
  • Western Health Advantage

Medical Specialties

Dr. Gregory Scot Harmon has the following specialty

Specialty Expertise

Dr. Gregory Scot Harmon has the following 16 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Capsule Endoscopy
  • Celiac Disease
  • Colon Cancer
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Hepatitis
  • Hepatitis C
  • Hiatal Hernia
  • Inflammatory Bowel Diseases (IBD)
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis
  • Viral Human Hepatitis

Certifications, License, & Education

27 Years Experience

BOARD CERTIFICATIONS

American Board of Internal Medicine

Internal medicine

MEDICAL LICENSE

Medical Doctor, California, 2026, Expired

EDUCATION & TRAINING

Residency

Univ Ca San Diego Med Ctr, Gastroenterology Northwestern Univ Med Sch, Internal Medicine
Northwestern Univ/McGaw
Northwestern Univ/McFaw

Medical School

U Of Chgo Div Of Bio Sci Pritzker Sch Of MedicineGraduated in 1999
University of Chicago, Pritzker Sch of Med, Chicago IlGraduated in 1999

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Frequently Asked Questions

Does Dr. Gregory Harmon accept my insurance?
You can see the insurance plans that Dr. Gregory Harmon accepts on their Vitals profile.
Is Dr. Gregory Harmon accepting new patients?
Dr. Gregory Harmon is accepting new patients on Vitals. View Dr. Gregory Harmon's profile on Vitals to make an appointment.
Which hospitals is Dr. Gregory Harmon affiliated with?
Dr. Gregory Harmon is affiliated with Uci Health Los Alamitos.
Where is Dr. Gregory Harmon's office located?
Dr. Gregory Harmon's office is located at 20911 Earl St Ste 220, Torrance, CA, 90503.
What languages does Dr. Gregory Harmon speak?
Dr. Gregory Harmon speaks English.

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