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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 189 reviews 4.8 Star Rating (189 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
189 ratings, 178 with a written review
5 star
88%
88%
4 star
8%
8%
3 star
2%
2%
2 star
1%
1%
1 star
1%
1%

Your trust is our top concern.

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Dr. Harmon was very professional and knowledgeable about my condition. He actually had an additional iron blood test run to cover all bases.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 14, 2025
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Excellent physician and office staff. This most recent appointment was made by the office per physician instruction without needing me to call. I appreciate this attention to detail and timely care.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 11, 2025
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The experience was very good and I felt very relaxed.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 11, 2025
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All Good,
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 07, 2025
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He is really good about following up with me and answering my questions via my chart or phone. Some reason I really struggle with understanding my gut health so he is really patient and makes sure I understand the treatment plan. Most importantly he has managed to greatly improve my health. Thanks to his treatment plan I'm not hurting everyday and still working to improve my gut health. The staff is also really nice and wonderful about returning messages.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Apr 07, 2025
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Just like my other Providence care providers, very good service with extremely nice people
What went well
No results
What could be improved
  • Didn't explain conditions well
Helpful
Apr 07, 2025
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Everyone was nice and respectful.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 22, 2025
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I appreciate the efficiency of Dr Harmon's office staff, the doctors awareness of my health history and thoughtful description of the procedure coming up. I am confident that Dr Harmon is an excellent doctor and that I am in good hands.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 10, 2025
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Dr. Harmon had history on tap and knew what was needed for colonoscopy and auxiliary test.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 03, 2025
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Excelente service
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Mar 01, 2025
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Really understanding of my needs.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 25, 2025
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Very diligent and personable.
What went well
No results
What could be improved
No results
Helpful
Feb 23, 2025
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From the time I checked in with the front office to my actual visit with the doctor I believe I was treated in a very professional & caring way. The only problem is that the doctor is very busy and it can be difficult to make an appointment.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 22, 2025
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Dr Harmon is a great, perfectly suited Dr for me! He is calm, professional, knowledgeable and down to earth. He is very good about making sure my treatment is up-to-date. I previously worked in a hospital so I have a sense of how busy a medical office can be! With the hectic pace that a medical office tends to follow each and every day, staff and Dr always take time to be personal, efficient, knowledgeable and helpful. It is refreshing getting such good "customer service". I feel truly lucky to be a petite t of Dr Harmon's and know I'm getting quality health care.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 10, 2025
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Dr Harmon spent more time than was necessary with me and addressed some of my related issues. I was appreciative that he was willing to listen and help with my concerns.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Feb 01, 2025
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Professional, clean and answered my questions
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Jan 27, 2025
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Dr. Harmon is very kind, knowledgeable, and professional. I am very grateful he is my physician.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Jan 23, 2025
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Good experierces
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Jan 20, 2025
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I was seen in an expediante manor, provider came exam room soon after I entered, he was very nice, easy to talk to didn't seem rushed at all. I would highly recommend him to anyone in need of his specialty.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Jan 19, 2025
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Dr. Harmon was professional and well informed it is practice and thoroughly reviewed my medical records.
What went well
  • Explained conditions well
What could be improved
No results
Helpful
Dec 30, 2024
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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.

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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 overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

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

      Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

      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