Aaron Richard
Harrison, MD

Gastroenterology, Internal Medicine

(631) 968-8288

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About your doctor:

Member of Northwell Health Physician Partners
Languages spoken:


Board certifications:

  • Gastroenterology - American Board of IM/Gastroenterology
  • Internal Medicine - American Board of Internal Medicine

Administrative titles

  • Chairman of Medicine - Gastroenterology, Southside Hospital

Medical school

  • Albert Einstein College of Medicine


  • Bronx Municipal Hospital Center


  • VA Greater Los Angeles Healthcare System GME


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Locations & insurance

  • 39 Brentwood Road
    Suite 201
    Bay Shore, NY 11706

    Fax: (631) 968-8268

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Patient ratings & comments

Northwell Health Physician Partners is improving the patient experience by displaying physician ratings and reviews. Learn more.

Friendliness/courtesy of the care provider


Explanations the care provider gave you about your problem or condition


Concern the care provider showed for your questions or worries


Care provider’s efforts to include you in decisions about your treatment


Information the care provider gave you about medications (if any)


Instructions the care provider gave you about follow-up care (if any)


Degrees to which care provider talked with you using words you could understand


Amount of time the care provider spent with you


Your confidence in this care provider


Likelihood of your recommending this care provider to others


Most recent comments:

Patient comments are gathered from the Press Ganey Patient Satisfaction Survey. Comments are displayed in their entirety and are anonymous for patient privacy.

"Dr. Harrison is the best"

"Dr. Harrison is wonderful! Great bedside manners, wisdom and experienced. Highly recommended!"

"he was really nice, great bed side manner, very informative"

"I have been seeing Dr.Harrison for many years He is a very caring doctor"

"Dr. Harrison is excellent in all respects."

"Professional, humane."

"There is no one better than Dr. Harrison -"

"Dr. Harrison a throwback to when physicians still made house calls - a gem, a "mensch" the best I'm lucky to have him as my physician."

"Dr. Harrison is wonderful and I have complete confidence in him."

"My husband and myself liked Dr. Harrison and trusted his opinion."

"I have a lot of confidence in Dr. Harrison. He gets to the root of your problem properly and with compassion."

"I asked Dr. Harrison for a miracle. He has left me hopeful."

"Dr. Harrison: patience, understanding concern and caring!"

"Great doctor!"

"I have complete confidence in Dr. Harrison. I have been seeing him about 15 years now."

"Dr. Harrison, the best, I know this for 20 - 25 years. Class "A" + Dr. "Any time"."

"Dr. Harrison is a true professional courteous, concerned and knowledgeable. He gives confidence."

"he is always attentive, thorough. friendly and professional."

"Used Dr. Harrison for years. He been the doctor of choice for most of my friends and all of my family. He is great!"

"Dr. Harrison is the best."

"I was afraid I was going to lose Dr. Harrison when I changed ins. I was very happy that did not happen."

"Takes the time to listen to any issues you may have."

"Goes above and beyond. Excellent."

"Dr. Harrison has been my dr. for 22 yrs. He is my favorite dr."

"This doctor is exceptional. He spends a lot of time w/patients -"

"Dr. Harrison is efficient and has a good "bedside manner". He seems caring and concerned for the patient."

"Dr. Harrison is so good I wish he could be my primary doctor."

"Dr. Harrison is an excellent doctor whom I have recommended to numerous people."

"Excellent Dr."

"Dr. Harrison is comforting, caring and an excellent provider!"

"Dr Harrison is and has always been the best. And he took care of my problem"


"Dr. Harrison made me very comfortable during the whole visit, treating very professional & respectfully."

"I came to this doctor after being treated unsuccessfully by 2 other doctors in his specialty, Dr. Harrison worked with me and has helped me with my condition immeasurably."

"Dr. Harrison is one of the nicest doctors I've ever met."

"using dr. harrison for many years and am very confident in his ability to treat me."

"I have the utmost confidence in Dr. Harrison."

"Dr. Harrison is the best. I have the utmost confidence in him and I will be very sorry when he decides it is time to retire. Mi hope that is many years away."

"Didn't discuss all concerns, was very uncomfortable feeling I was wasting his time."

"Had no bad experience."

"Everything at this office is very good."

"Dr. Harrison took his time going over the details of what was involved and showed great concern abt. my health!"


"Dr. Harrison is a knowledgeable, caring physician. I'm lucky to have him as my doctor. #9. Off the charts excellent."

"Dr. Harrison is very professional, educated & attentive. I have been treating with him for over 30 years."

"Trust this doctor & have always had good treatment."

"Very happy with this provider."


"Dr. Harrison is a terrific dr. and I have full confidence in him!"

"Dr. Harrison DO is best to make me feel good for my pain."

"My care from Dr. Harrison has always been excellent, I wouldn't dream of having anyone else care for me."