Credentials

Credentials

  • Board certifications

    • Internal Medicine - American Board of Internal Medicine

    • Gastroenterology - American Board of IM/Gastroenterology

  • Administrative titles

    • Chairman of Medicine - Gastroenterology, Southside Hospital

  • Medical school

    • Albert Einstein College of Medicine

  • Residencies

    • Bronx Municipal Hospital Center

  • Fellowships

    • VA Greater Los Angeles Healthcare System GME

  • Affiliations

    • Southside Hospital

Locations & insurance

Locations & insurance

39 Brentwood Road, Suite 201Bay Shore, NY 11706

Insurance information

Don't be surprised

Learn how you can avoid unanticipated medical bills

Learn more about medical bills

Patient ratings & comments

Patient ratings & comments

Unlike websites where anyone can post doctor reviews, only actual patients can provide information by completing the survey sent to them by Press Ganey. Learn more.

4.9 out of 5 4.9 out of 5 rating
| 169.0 patient ratings & 66 patient comments

Friendliness/courtesy of the care provider

4.9 out of 5 4.9 out of 5 rating

Explanations the care provider gave you about your problem or condition

4.8 out of 5 4.8 out of 5 rating

Concern the care provider showed for your questions or worries

4.8 out of 5 4.8 out of 5 rating

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

4.8 out of 5 4.8 out of 5 rating

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

4.8 out of 5 4.8 out of 5 rating

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

4.9 out of 5 4.9 out of 5 rating

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

4.9 out of 5 4.9 out of 5 rating

Amount of time the care provider spent with you

4.8 out of 5 4.8 out of 5 rating

Your confidence in this care provider

4.9 out of 5 4.9 out of 5 rating

Likelihood of your recommending this care provider to others

4.9 out of 5 4.9 out of 5 rating

Most recent comments

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

10/01/2018
"Explained very good to me about the instructions for the medicine that I have to take before the exam. "
09/23/2018
"Dr. Harrison has always been, and continues to be, the best! He listens closely to what you have to say, shares all of his medical explanations in layman terms and take the time to answer any and all questions without making you feel like he is being delayed by your inquiries. He LOOKS at you, not a computer, when he is speaking with you and listening to you."
09/18/2018
""Aaron Harrison MD" simply the very best!"
09/18/2018
"Dr. Harrison was very nice and explained everything to me. He was informative and explained everything to me. I think he is a great doctor."
09/08/2018
"DR. Harrison is great a real pro"
09/06/2018
"Dr. Harrison is courteous, profession and caring doctor."
09/02/2018
"Dr. Harrison made sure I understood all the steps to follow in the next steps of treatment. He is very thorough and patient."
08/23/2018
"Excellent physician. "
08/23/2018
"Excellent physician. "
07/25/2018
"Dr. Harrison always answers my questions completely, and lowers my level of concern. All the years I have seen Dr. Harrison, he has always provided excellent care! My wife and daughter have also been treated by Dr. Harrison. "
07/20/2018
"Dr. Harrison is an excellent physician. You know he cares about you & getting you healthy again. Would highly recommend Dr. Harrison."
07/18/2018
"Dr. Harrison is a very empathetic doctor, who cares about his patients."
07/04/2018
"He is the best."
06/22/2018
"Have complete confidence in Dr. Harrison. This is second procedure with him."
06/16/2018
"I would recommend Dr. Harrison without reservation."
05/29/2018
"Dr. Harrison is the best"
05/02/2018
"Dr. Harrison is wonderful! Great bedside manners, wisdom and experienced. Highly recommended!"
05/02/2018
"he was really nice, great bed side manner, very informative"
04/16/2018
"I have been seeing Dr.Harrison for many years He is a very caring doctor"
03/26/2018
"Dr. Harrison is excellent in all respects."
02/23/2018
"Professional, humane."
02/09/2018
"There is no one better than Dr. Harrison -"
02/05/2018
"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."
10/28/2017
"Dr. Harrison is wonderful and I have complete confidence in him."
10/16/2017
"My husband and myself liked Dr. Harrison and trusted his opinion."
10/03/2017
"I have a lot of confidence in Dr. Harrison. He gets to the root of your problem properly and with compassion."
09/07/2017
"I asked Dr. Harrison for a miracle. He has left me hopeful."
09/07/2017
"Dr. Harrison: patience, understanding concern and caring!"
07/10/2017
"Great doctor!"
07/01/2017
"I have complete confidence in Dr. Harrison. I have been seeing him about 15 years now."
06/27/2017
"Dr. Harrison, the best, I know this for 20 - 25 years. Class "A" + Dr. "Any time"."
06/06/2017
"Dr. Harrison is a true professional courteous, concerned and knowledgeable. He gives confidence."
06/01/2017
"he is always attentive, thorough. friendly and professional."
02/09/2017
"Used Dr. Harrison for years. He been the doctor of choice for most of my friends and all of my family. He is great!"
01/12/2017
"Dr. Harrison is the best."
12/30/2016
"I was afraid I was going to lose Dr. Harrison when I changed ins. I was very happy that did not happen."
10/24/2016
"Takes the time to listen to any issues you may have."
10/24/2016
"Goes above and beyond. Excellent."
10/12/2016
"Dr. Harrison has been my dr. for 22 yrs. He is my favorite dr."
09/30/2016
"This doctor is exceptional. He spends a lot of time w/patients -"
09/29/2016
"Dr. Harrison is efficient and has a good "bedside manner". He seems caring and concerned for the patient."
09/28/2016
"Dr. Harrison is so good I wish he could be my primary doctor."
09/01/2016
"Dr. Harrison is an excellent doctor whom I have recommended to numerous people."
08/08/2016
"Excellent Dr."
07/22/2016
"Dr. Harrison is comforting, caring and an excellent provider!"
06/17/2016
"Dr Harrison is and has always been the best. And he took care of my problem"
05/09/2016
"Good."
04/15/2016
"Dr. Harrison made me very comfortable during the whole visit, treating very professional & respectfully."
03/04/2016
"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."
03/04/2016
"Dr. Harrison is one of the nicest doctors I've ever met."
01/27/2016
"using dr. harrison for many years and am very confident in his ability to treat me."
01/27/2016
"I have the utmost confidence in Dr. Harrison."
01/21/2016
"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."
12/21/2015
"Didn't discuss all concerns, was very uncomfortable feeling I was wasting his time."
11/16/2015
"Had no bad experience."
10/14/2015
"Everything at this office is very good."
10/01/2015
"Dr. Harrison took his time going over the details of what was involved and showed great concern abt. my health!"
04/22/2015
"Good."
04/21/2015
"Dr. Harrison is a knowledgeable, caring physician. I'm lucky to have him as my doctor. #9. Off the charts excellent."
03/17/2015
"Dr. Harrison is very professional, educated & attentive. I have been treating with him for over 30 years."
03/11/2015
"Trust this doctor & have always had good treatment."
01/05/2015
"Very happy with this provider."
12/15/2014
"Excellent."
12/10/2014
"Dr. Harrison is a terrific dr. and I have full confidence in him!"
06/19/2014
"Dr. Harrison DO is best to make me feel good for my pain."
04/02/2014
"My care from Dr. Harrison has always been excellent, I wouldn't dream of having anyone else care for me."

In the news

In the news

In the news
Northwell Health has opened a $13 million, multispecialty practice at 39 Brentwood Road in Bay Shore. The 29,000-square-foot facility features cardiology, pulmonology, endoscopy, gastroenterology and pain management services, further complementing offerings already available at other nearby Northwell Health Physician Partners' practices and Southside Hospital in Bay Shore...