Testimonials & Reviews
Long Island Gastro
Gastroenterology Practice located in Syosset, NY
Long Island Gastro always appreciates feedback from our valued patients. To date, we’re thrilled to have collected 251 reviews with an average rating of 4.86 out of 5 stars. Please read what others are saying about Long Island Gastro below, and as always, we would love to collect your feedback.
Angela D.
Submitted 08/02/25
Dr. Ashamalla is one of the kindest and most caring doctors I’ve ever had. He helped me through a very difficult time, both physically and emotionally. From the very beginning, he took the time to really listen to what I was going through and never made me feel rushed or unheard.
He consistently checked in on me, followed up on my progress, and worked with me to find the best ways to manage my symptoms, which were largely caused by stress. His calm, supportive approach made a huge difference in my care and recovery.
I am incredibly grateful to have had Dr. Ashamalla in my corner, and I highly recommend him to anyone looking for a gastroenterologist who truly cares about their patients.
Carolyn S.
Submitted 07/26/25
Dr. Sideridis has been a trusted and beloved part of our lives for many years. My wife, and I have been his patients for as long as I can remember, and the care he has given us has been nothing short of extraordinary. His warmth, compassion, and genuine concern are felt in every conversation, and his knowledge and skill as a physician have given us tremendous peace of mind over the years.
He doesn’t just treat symptoms—he treats people. We’ve always felt like more than just patients when we walk through his door. His office staff is equally kind and attentive, and the environment they’ve created is one of calm, comfort, and professionalism. They go above and beyond to be accommodating.
We are deeply grateful for everything Dr. Sideridis has done for us and for the kindness he has always shown to us. He is truly one of a kind, and we consider ourselves very lucky to have him in our lives.
Laura W.
Submitted 06/20/25
Great experience or as good as possible for your required EGD / colonoscopy.
Laurence E.
Submitted 06/19/25
doctor is personable, has a genuine interest in patient care. Explained exactly what needed to be done and is concerned about his patients.
Janice A.
Submitted 05/29/25
Staff is knowledgeable and they take the time to discuss any medical concerns that you have.
ROY M.
Submitted 05/23/25
Dr Kadam is one of the best Doctor I have ever had also is staff is very helpful and courteous
Marty P.
Submitted 05/23/25
Dr. Kadam is very patient and answered all my questions.
Alan C.
Submitted 05/15/25
Very satisfying
Linda K.
Submitted 04/17/25
Dr S as I call him is an excellent doctor He is knowledgeable caring and smart He has helped my husband out of two serious medical issues over the many years as well as provides myself, my husband and all our family members with exceptional care He is a class act and I recommend him highly
Ron D.
Submitted 04/09/25
Professional but yet down to earth.
Olga F.
Submitted 03/20/25
That was my first appointment with Haley Wipper, PA. I am a very satisfied patient, because Haley was very attentive, not only looking into the results of tests, but also listening to my explanation. She gave me a piece of advice about the food I was eating and when I was eating. She is really very very good
Mike M.
Submitted 03/12/25
Front desk is horrible. They don’t care about the patient. They are lazy and refuse to go the extra mile for anyone. Dr Sideridis is always in procedure and never available to see anymore. Haley is very good. This practice has gone downhill starting with the useless front desk to a doctor you can’t see anymore.
Dawn A.
Submitted 03/03/25
A Life-Saving Doctor!
After 8 years of battling Ulcerative Colitis, countless hospitalizations, failed medications, and moments of hopelessness, Dr. Michael Ashmala and Long Island Gastro changed my life. In just 6 weeks, he accomplished what so many others couldn’t—he helped me reach remission!
Dr. Ashmala’s bedside manner is unmatched—compassionate, patient, and truly invested in his patients’ well-being. From the very first visit, he gave me hope when I had none left. His expertise, combined with his kindness, made all the difference.
His office staff is incredible—so pleasant, helpful, and accommodating. Every visit was smooth and stress-free, which is rare in healthcare.
Thank you, Dr. Ashmala, for saving my life! I am forever grateful for your dedication and care. If you or a loved one are battling GI issues, Dr. Ashmala is the Dr. you need!
Lydia T.
Submitted 02/25/25
Dr. Sideridis is an outstanding gastroenterologist who truly goes above and beyond for his patients. He is incredibly thorough in his evaluations, taking the time to listen and explain everything clearly. I highly recommend him to anyone looking for a skilled and compassionate specialist.
Crystal L.
Submitted 02/03/25
Very fast and efficient. No complaints whatsoever. Will use again.
Christine W.
Submitted 01/20/25
Dr. Sideridis has been my doctor for years now and I will never go to anyone else. He is one of the only doctors I’ve ever met that truly listens and takes time to understand a patient’s concerns. I suffered from sucrose intolerance my entire life without knowing and he diagnosed me when hundreds (no exaggeration) of previously seen doctors ever could find the problem. He looks at the whole system to determine proper treatment and he actually cares. He has extensive knowledge and experience. He is warm and trustworthy. Why see another gastroenterologist? He’s the best out there. Thank you Dr. Sideridis for everything.
Irene A.
Submitted 01/20/25
The best of the best !!!! Caring , talkative , understanding but mostly a great human being and then a great doctors ! Would highly recommend Dr. Sideridis to everyone !!
Claudien I.
Submitted 01/17/25
I had a procedure done by Dr Sideridis and my experience was great, they took care of me from start to finish..I'd recommend this doctor
Sarowar K.
Submitted 12/30/24
Very good
Kimm M.
Submitted 12/30/24
It was my first colonoscopy or as Dr. Sideridis said “my maiden voyage.” He has a great bed side manor and really put me at ease. His nurse and anesthesiologist were a great part of the team too. I recommend this practice!