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Dr. Gregory Harmon, MD

Dr. Gregory Harmon, MD

Gastroenterology*
25+ years of experience

Dr. Gregory Harmon, MD is a gastroenterologist in Torrance, CA and has over 25 years of experience in the medical field. He graduated from University of Chicago Pritzker School of Medicine in 1999. He is affiliated with medical facilities Torrance Memorial Medical Center and Providence Little Company of Mary Medical Center Torrance. He is accepting new patients.

4.8 Star Rating
Based on 192 reviews 4.8 Star Rating (192 reviews)

Providence Medical Institute - Torrance Gastroenterology

20911 Earl St Ste 220 Torrance, CA 90503

Make an Appointment

(310) 540-9600

Hospital Highlight

Dr. Harmon is affiliated with Torrance Memorial Medical Center Torrance, a highly rated hospital.

Dr. Harmon is a Healthgrades Choice provider in Gastroenterology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Area of Expertise
    Dr. Harmon specializes in the area of Gastroenterology. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Practices at Top Hospital
    Surgical Care Excellence Award™ • See hospitals
  • Recent Reviews
    Reviews made in the last 30 days. • See reviews
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Dr. Harmon's Reviews

Likelihood to recommend Dr. Harmon

4.8

192 ratings, 181 with a written review
5 Star
89%
89%
4 Star
8%
8%
3 Star
2%
2%
2 Star
1%
1%
1 Star
1%
1%

Your trust is our top concern. Learn more.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

RecentHighestLowestMost Helpful
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 19, 2025
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What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 18, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 18, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 14, 2025
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What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 11, 2025
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What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 11, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 07, 2025
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What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 07, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
No results
What could be improved
  • Didn't explain conditions well
Helpful
Apr 07, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 22, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 10, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 03, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 01, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 25, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
No results
What could be improved
No results
Helpful
Feb 23, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 22, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 10, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 01, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Jan 27, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Jan 23, 2025
×Post a ResponseAre you Dr. Gregory Harmon, MD?

Leave a review

How was your experience with Dr. Harmon?

Know Before You Go

About Me

care philosophy

Dr. Harmon seeks to bring the highest level of clarity in communication. Our group's goal is to provide the best, most ethical care that we can while achieving the best outcome.

  • Gastroenterology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Of California, San Diego

    Fellowship Hospital, 2005

  • Northwestern University-mcgaw Medical Center

    Residency Hospital, 2002

  • University Of Chicago Pritzker School Of Medicine

    Medical School, 1999
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Gastroenterology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

Dr. Harmon is a Healthgrades Choice provider in Gastroenterology

    Read our methodology

    Focus on IBD

    Locations

    Providence Medical Institute - Torrance Gastroenterology

    Providence Medical Institute - Torrance Gastroenterology20911 Earl St Ste 220 Torrance, CA 90503
    1

    Affiliated Hospitals

    • Torrance Memorial Medical Center

      3330 Lomita Blvd
      Torrance, CA 90505
      Recipient of 14
      hospital awards

      Surgical Care Excellence Award™ (2025, 2024)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      Outstanding Patient Experience Award™ (2024, 2023, 2022)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      86%
      Patients said they were given information about recovering at home

      2% higher than the national average

      80%
      Patients would recommend the hospital to friends and family

      15% higher than the national average

      View all patient feedback

    • Providence Little Company of Mary Medical Center Torrance

      4101 Torrance Blvd
      Torrance, CA 90503
      Recipient of 3
      hospital awards

      Patient Safety Excellence Award™ (2025, 2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      83%
      Patients said they were given information about recovering at home

      1% lower than the national average

      77%
      Patients said that doctors always listened to them and explained things well

      1% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality