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Gastroenterologist
121 Saint Luke's Center Drive
Suite 406, Building A
Chesterfield, MO
63017
Top reviews
I was well pleased with the whole appointment. Dr. Haas was thorough, personable, and put me at ease. He listened to my concerns and at no time did he rush the appointment or pressure me towards a decision. I left there feeling I Show morewas well informed. Both he and his staff were GREAT!
I was very impressed by Dr Haas. He is very articulate and spent plenty of time listening and discussing my medical problems. I am very pleased that he has new recommendations to help me and I am very hopeful that these will impShow morerove my condition.
Jason Haas, D.O. is dedicated to providing the highest quality of care to all his patients. He has strong communication skills which allow him to connect with patients, staff and colleagues.
For the past eight years, Dr. Haas has been a gastroenterologist practicing in Springfield, Missouri with Cox Medical Clinic. He is a board-certified gastroenterologist that completed his GI Fellowship training at Aurora Health Care in Milwaukee, WI and his Internal Medicine Residency at Gundersen Health Care in LaCrosse, WI.
His wife is from. St. Louis, and in their spare time Dr. Haas enjoys traveling with her and their two daughters. Dr. Haas has been a member of the Colorectal Awareness Party in Springfield, which helps raise money and provide free colonoscopy evaluations for patients in need.
Abdominal Pain
Acid Reflux
Barrett’s Esophagus
Capsule Endoscopy
Celiac Disease
Colon Cancer Screening
Colonoscopy
Conditions
Constipation
Crohn’s Disease
Diarrhea
Double (Bi-Directional) Endoscopy
Eosinophilic Esophagitis
Fatty Liver
FibroScan
Fructose Intolerance Testing
Hemorrhoids
Hydrogen and Methane Breath Testing
IBD
IBS
Infusion Services
Lactose Intolerance Testing
Liver Disease
Research
Services
Small Intestinal Bacterial Overgrowth (SIBO)
Ulcerative Colitis
Upper Endoscopy
Locations (3)
Gateway Gastroenterology
121 Saint Luke's Center Drive
Suite 406, Building A
Chesterfield, MO, 63017
Gateway Gastroenterology
1040 Old Des Peres Rd
Des Peres, MO, 63131
Gateway Gastroenterology
12855 N. 40 Drive
Suite 150, South Tower
Saint Louis, MO, 63141
More About Dr. Andrew Su, MD
Practice
Specialties
Insurance
NPI Number
1962402925
Provider's Gender
Male
Reviews
They helped ease any concerns with professionalism. The whole team worked well together…
I was well pleased with the whole appointment. Dr. Haas was thorough, personable, and put me at ease. He listened to my concerns and at no time did he rush the appointment or pressure me towards a decision. I left there feeling I was well informed. Both he and his staff were GREAT!
Dr Haas was very thorough and provided comprehensive feedback port surgery. He patiently answered all our questions in great detail. Would highly recommend him, as well as the staff at the endoscopy center.
Great
Dr Haas really works with you to help improve your condition.
Very good Doctor. Courteous and professional
No complaints. He explained everything he was going todo and it proceeded with out a hitch.
Dr. Haas is great! I feel I have a partner in my care who listens to my thoughts and concerns to address any issues I have. I highly recommend him!
Excellent job
I was very impressed by Dr Haas. He is very articulate and spent plenty of time listening and discussing my medical problems. I am very pleased that he has new recommendations to help me and I am very hopeful that these will improve my condition.
I feel very comfortable in your office. Everyone is so nice and helpful. Yes, I would highly recommend your practice.
Very good bed side manner, knowledgeable, answered all questions, very personable, took his time with us etc. Staff at the facility were all very friendly, nice, helpful and good.
As usual an appointment with Dr Haas is informative and enlightening. I do really like him.
Gateway Gastrology receptionists, nurses, and staff are
My Gastrologist retired. Today was my first colonoscopy witj a new doctor, Dr. Jason Haas. He was very good at explaining the procedure and answering any questions. Great personality. I highly recommend Dr. Haas and Gateway Gastrology to anyone.
Very knowledgeable-addresses issue effectively Great staff
Very helpful and processional
Great Dr. and staff. Very friendly and explained everything very well.
Everyone was really nice and professional. Great service
Knew my situation before our appointment. Very thorough.
Kind, caring physician. All the nurses were also very kind and attentive. Great facility!
Thank you, Dr. Haas!
Engaged Staff and Dr. Haas was kind and knowledgeable.
Dr.Haas and his team a very professional and knowledgeable.
He was a very nice person, his entire staff were very explanatory about the procedure. I would recommend him and his team, Thanks
Wonderful experience with the entire team! In addition to being very nice and friendly, they explained everything to me so I knew exactly what to expect.
Dr. Williams was wonderful in every aspect of the appointment. He came highly recommended by my cardiologist at St. Luke’s.
I was very happy with my colonoscopy procedure done by Dr Haas at Gateway Gastroenterology.
Meeting Dr.Hass was just an amazing experience. He was so down to earth, answered all my questions and explained everything to me in every day terms not medical terms. I left the appointment feeling that I was in great hands. It has only been 1 days since my appointment and I have already recommended him to a friend.
Dr Haas was very helpful ?. We are now a patient of his. Thank you
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