Los Alamitos Gastroenterology A

Gregory Harmon MD, Gastroenterology

Gastroenterology · 4 Providers

Average Rating of all Office Providers

Los Alamitos Gastroenterology A

10861 Cherry St Ste 302
Los Alamitos, CA 90720
View All Locations(562) 493-1011

Office Providers

Office Provider Reviews


based on the average of 48 provider reviews for Los Alamitos Gastroenterology A

Review of Dr. Nguyen

-Long Beach, CA |

I have cirrhosis of the liver; I wouldn't be alive & healthy today had I not been under Dr. Nguyen's care (and the Lord, thank You!!). My liver was failing - swollen abdomen (ascites), hepatic encephalopathy (endangering brain due to heightened ammonia levels), significant weight/muscle loss, extreme fatigue, etc. Dr. Nguyen pursued available treatments - draining ascites, surgery for esophageal varices, and best current prescriptions to address all of the above. 5 stars not even close!
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Review of Dr. Harmon

- in Wallflower Ca |

Dr. Harmon is an excellent Doctor. He readily listens to you and get your History accurately to formulate the right medical plan for you. I would no hesitate in the least recommending him and his Staff to anyone.
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Review of Dr. Harmon

- in ARTESIA |

His time he take with me and listen to what I have to say, He shows a heart of compassion! His promptness in returning calls.
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Review of Dr. Harmon


Dr Harmon is such a great doctor. He is very kind. And he helped me so much treating me for a very serious condition. His nurse Jessica is wonderful and the office staff is so nice. Love this place. Very competent physician.
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Review of Dr. Nguyen

- in Long Beach, CA |

Dr Nguyen is knowledgeable, professional, and shows real concern and interest in her patients. I have never felt rushed during our appointments, and after a procedure (such as an endoscopy), she provides full and understandable information and recommendations. On a personal level, I am indebted to Dr Nguyen for referring me to a surgeon to treat chronic reflux; post-surgery, my quality of life has improved enormously.
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Learn About Los Alamitos Gastroenterology A

18 Procedures

  • Anoscopy
  • Bile Duct Procedure
  • Biliary Drainage
  • Bravo Ph Testing
  • Capsule Endoscopy
  • Colon Cancer Screening
  • Colonoscopy
  • Colonoscopy, Proctosigmoidoscopy, And Sigmoidoscopy
  • Colorectal Cancer Screening
  • Endoscopy
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Ercp (Endoscopic Retrograde Cholangiopancreatography)
  • Esophageal Ph Monitoring
  • Fecal Impaction Removal
  • Gastroenterology Procedures
  • Hemorrhoid Banding
  • Liver Biopsy
  • Manometry


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Language Services

  • Mandarin
  • Spanish
  • Vietnamese

Los Alamitos Gastroenterology A accepts 15 insurance carriers

  • Aetna
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • Cigna
  • Commercial Insurance Company
  • First Health (Coventry Health Care)
  • Health Net
  • Humana
  • Molina Healthcare
  • Monarch Healthcare
  • MultiPlan
  • National Elevator
  • UnitedHealthCare
*Please verify this information when scheduling an appointment.