Dr. Jason M. Haas, DO | Springfield, MO | Gastroenterology

.about .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Jason Haas is a gastroenterologist and internal medicine specialist who brings 18 years of experience to digestive health care. He earned his medical degree from A T Still University Kirksville College of Osteopathic Medicine, where he developed expertise in both gastroenterology and internal medicine. His dual specialty training allows him to provide comprehensive care for complex digestive conditions while addressing patients' overall health needs. Dr. Haas communicates with patients in English.

Dr. Haas practices at multiple locations including Springfield and Chesterfield, Missouri, with affiliations at CoxHealth Medical Center South, Meyer Orthopedic and Rehabilitation Hospital, and Saint Lukes Hospital. He specializes in treating common digestive conditions such as hemorrhoids, colon polyps, and diverticular disease. His procedural expertise includes performing colonoscopies and both upper and lower gastrointestinal endoscopies to diagnose and treat digestive disorders. …Patients have given him an average rating of 4.2 out of 5 on Vitals.

Read More Read less

AI-generated from data on this provider profile.

accepting new patients
4.2

10 Ratings
18 years of experience
speaks English
A T Still University Kirksville College Of Osteopathic Medicine
5 written reviews
2 specialties
9 areas of expertise
2 board certifications
3 hospital affiliations
5 office locations
Male

10 ratings & reviews

Sort:

Showing 1 to 5 of 5 reviews

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Had a procedure which I was super nervous about the staff put me at ease then I met Dr. Haas what a great doctor bedside manner tops at best explanation of what to expect awesome. Thank You Dr. Haas and staff.

February 29th, 2020

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

This has been the most frustrating and horrible medical experience I've had. Phone calls are not returned, our appointment was cancelled because the dr. didn't feel it necessary to see us although ulcerative colitis was out of control. TERRIBLE, unprofessional advice was given to us over the phone that further complicated the issue. When we switched doctors, we were unable to get medical information and records.

October 9th, 2018

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Haas has a full schedule, but when you do see him, he is very caring and listens intently. He is thorough yet decisive in taking action. He explains his thoughts well and gives you a chance to question anything else you may need clarification on.

July 31st, 2017

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I recently visited Dr. Haas for my first colonoscopy. The whole process was very simple, and Dr. Haas and the staff were very kind, professional, and efficient. Overall, they made the best of a potentially difficult situation. I highly trust and recommend Dr. Haas and his wonderful staff.

July 8th, 2017

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Haas was extremely caring and took time to explain to me what was going on, and in a way that I could understand. I have never had a doctor explain my condition to me like that before. I felt like I was part of the decision making process. I have already set other family members to him. Very good doctor.

April 25th, 2012

CoxHealth - Gastroenterology

3901 S. Fremont Ave. Floor 4Springfield, MO 65804

Saint Lukes Hospital

232 S Woods Mill RdChesterfield, MO 63017

Tel: (314) 434-1500

Gateway Gastroenterology

121 Saint Lukes Center Dr Ste 406Chesterfield, MO 63017

Tel: (314) 529-4900

Mon8:00 am - 4:00 pm

Tue8:00 am - 4:00 pm

Wed8:00 am - 4:00 pm

Thu8:00 am - 4:00 pm

Fri8:00 am - 4:00 pm

SatClosed

SunClosed

Saint Louis Multispecialty Surgery Center

884 Woods Mill Rd Ste 100Ballwin, MO 63011

Tel: (636) 779-0079

Mon7:30 am - 5:00 pm

Tue7:30 am - 5:00 pm

Wed7:30 am - 5:00 pm

Thu7:30 am - 5:00 pm

Fri7:30 am - 5:00 pm

SatClosed

SunClosed

Saint Lukes Hospital

232 S Woods Mill Rd Ste 330EChesterfield, MO 63017


Dr. Jason Martin Haas, DO	Rebecca Humphries, APRN	Ashley Anderson, APRN	Shauna Sanderson, APRN
Gastroenterology	Gastroenterology	Gastroenterology	Gastroenterology
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
4.2 (10 Ratings)	0 (0 Ratings)	0 (0 Ratings)	0 (0 Ratings)
18 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	Virtual Visit Available
Speaks English	Speaks English	Speaks English	Speaks English
Springfield , MO	SACRAMENTO , CA	SACRAMENTO , CA	Tallahassee , FL
Med School: A T Still University Kirksville College Of Osteopathic Medicine	Med School: Emory University	Med School: East Tennessee State University - Quillen College of Medicine	Med School: Creighton University College of Nursing
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Abdominal Pain
Acid Reflux Disease (GERD)
Celiac Disease
Colonoscopy
Constipation
Hemorrhoids
Internal Medicine
Irritable Bowel Syndrome (IBS)
Ulcerative Colitis

MEDICAL LICENSE

Doctor Of Osteopathy, Missouri, 2026, Expired

EDUCATION & TRAINING

Medical School

A T Still University Kirksville College Of Osteopathic MedicineGraduated in 2008

Dr. Saima Bano Memon
Critical Care Medicine
25 Years Exp | Joplin, MO
(0)
Dr. Wade Thomas Jordan
Nephrology
49 Years Exp | Springfield, MO
(4)
Dr. Mary Ann P Kit, MD
Infectious Disease
37 Years Exp | Mount Vernon, MO
(1)
Dr. Jagdeep Singh Chinna, MD
Hospital Medicine
19 Years Exp | Springfield, MO
(0)
Dr. Ryan M Norman, DO
Hospital Medicine
23 Years Exp | Springfield, MO
(4)
Dr. Steven P Baca, DC
Chiropractor
| Springfield, MO
(0)
Dr. Rebecca M Taratuta
Nurse Practitioner
| Nixa, MO
(0)
Dr. Craig Steven Cookman, DO
Critical Care Medicine
12 Years Exp | Springfield, MO
(0)
Dr. Fahad Jamal Khan, MD
Hospital Medicine
13 Years Exp | Fort Wayne, IN
(0)
Clarissia Marie Hoeft
Nurse Practitioner
| Springfield, MO
(0)

Which hospitals is Dr. Jason Haas affiliated with?: Dr. Jason Haas is affiliated with Coxhealth Medical Center South, MEYER ORTHOPEDIC AND REHABILITATION HOSPITAL, and SAINT LUKES HOSPITAL.
Does Dr. Jason Haas accept my insurance?: You can see the insurance plans that Dr. Jason Haas accepts on their Vitals profile.
Is Dr. Jason Haas accepting new patients?: Dr. Jason Haas is accepting new patients on Vitals. View Dr. Jason Haas's profile on Vitals to make an appointment.
How can I make an appointment with Dr. Jason Haas?: You can find contact information for Dr. Jason Haas here on Vitals.
What languages does Dr. Jason Haas speak?: Dr. Jason Haas speaks English.

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.

Copyright © 2026 Vitals Consumer Services, LLC. US Patent No. 8, 694, 441. All Rights Reserved.
As more fully set forth in this website's terms of use . (1) nothing contained on or offered by or through this website should be construed as medical advice and should not be relied upon for medical diagnosis or treatment. Vitals Consumer Services, LLC ("Vitals"). the provider of this website, does not recommend or endorse any particular healthcare provider whose information or ratings appear on this website; and (2) Vitals has granted you a limited license to access and use this website for your own noncommercial use. You are not permitted to copy, reproduce, distribute, transmit, mirror, frame, scrape, extract, wrap, create derivative works of, reverse engineer, decompile or disassemble any part or aspect of this website.