Summary

Dr. Gregory Harmon treats colon polyps, hemorrhoids, and diverticular disease, and performs colonoscopy, lower GI endoscopy, and laparoscopy. He practices gastroenterology and has 27 years of experience.

Dr. Harmon is board-certified in internal medicine by the American Board of Internal Medicine. He completed medical school at the University of Chicago Pritzker School of Medicine and residency training at Northwestern University/McGaw and UC San Diego Medical Center, with a gastroenterology fellowship at Northwestern University. He is affiliated with UCI Health Los Alamitos and sees patients in Torrance, California. Patients on Vitals rate Dr. Harmon 4.8 out of 5.

Overview based on verified provider data

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
  • 1 board certification
  • 1 hospital affiliation
  • 1 office location

Patients’ Perspective

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

Office Location

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Gregory Scot HarmonJi Soo Choi, APRNRebecca Humphries, APRNJan Seiler, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.8 
0 
0 
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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 , CASacramento , CASacramento , CAMontgomery , AL
Med School: U Of Chgo Div Of Bio Sci Pritzker Sch Of Medicine Med School: New York University Med School: Emory University Med School: Georgia State University
Current Profile
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Insurance Plans Accepted by 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

Gregory Scot Harmon has the following specialty

Specialty Expertise

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

Gregory Scot Harmon holds an expired medical license in the state of California. They are board certified in Internal medicine by the American Board of Internal Medicine.

Board Certifications

Board certified in Internal medicine by the American Board of Internal Medicine.

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

Medical School

Graduated from U Of Chgo Div Of Bio Sci Pritzker Sch Of Medicine in 1999 and University of Chicago, Pritzker Sch of Med, Chicago Il in 1999.

NPI Number

Gregory Scot Harmon's NPI number is 1346347028.

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Frequently Asked Questions

Is Gregory Harmon accepting new patients?
Gregory Harmon is accepting new patients on Vitals. View Gregory Harmon's profile on Vitals to make an appointment.
How can I make an appointment with Gregory Harmon?
You can find contact information for Gregory Harmon here on Vitals.
Does Gregory Harmon accept virtual/telehealth appointments?
Gregory Harmon has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Gregory Harmon's office located?
Gregory Harmon's office is located at 20911 Earl St Ste 220, Torrance, CA, 90503.
Which hospitals is Gregory Harmon affiliated with?
Gregory Harmon is affiliated with Uci Health Los Alamitos.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Board certification bodies (such as ABMS)
  • Healthcare system and provider network data

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