Gastroenterologists in Missouri
Data updated monthly · Last refresh October 2026
411 Gastroenterology providers practice in Missouri, including 59 (14%) offering telehealth. The largest concentration is in Saint Louis. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
411providers
59telehealth
Saint Louistop city
Gastroenterology by city in Missouri
Choose a city to see providers there.
Where Gastroenterologists in Missouri practice
From CMS Medicare enrollment records covering 274 of the 411 providers listed here (67%). Providers who do not bill Medicare are not included in these figures.
4%solo or small practice (under 10 clinicians)
30%mid-size group (10 to 99)
66%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Gastroenterologists | All clinicians in group | Main city |
| Washington University | 47 | 2,968 | Saint Louis |
| Mercy Clinic Gastroenterology LLC | 40 | 66 | Saint Louis |
| Digestive Health Specialists LLC | 26 | 69 | Independence |
| Ssm Medical Group Inc. | 18 | 565 | Saint Louis |
| Ssm Health Care Group | 17 | 929 | Saint Louis |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Gastroenterologists affiliated |
| Missouri Baptist Medical Center | Saint Louis | Nonprofit | 5 of 5 | 68 |
| Barnes Jewish Hospital | Saint Louis | Nonprofit | 4 of 5 | 54 |
| Barnes-Jewish West County Hospital | Creve Coeur | Nonprofit | 5 of 5 | 49 |
| Mercy Hospital St Louis | Saint Louis | Nonprofit | 4 of 5 | 38 |
| Mercy Hospital South | Saint Louis | Nonprofit | 2 of 5 | 24 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Gastroenterology providers in Missouri
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Gregory Vardakis, D.O.Blue Springs, MO · $127 in drug and device payments (2025) ·
(816) 229-1191 Dr. Melvin Saltzman, D.O.Bridgeton, MO · No drug or device payments recorded (2025) ·
(314) 770-1000 Dr. Patrick Mcdonough, MDBridgeton, MO · $14 in drug and device payments (2025) ·
(314) 291-8824 Dr. Raymond Mohrman, MDBridgeton, MO · No drug or device payments recorded (2025) ·
(314) 291-8824 Dr. Christopher Keller, DOCape Girardeau, MO · $225 in drug and device payments (2025) ·
(573) 331-7910 Dr. Cody KernCape Girardeau, MO · $933 in drug and device payments (2025) ·
(573) 334-4822 Dr. Dean Edwards, M.D.Cape Girardeau, MO · No drug or device payments recorded (2025) ·
(573) 334-8870 Dr. Horace Schneider, D.O.Cape Girardeau, MO · No drug or device payments recorded (2025) ·
(573) 334-8870 Dr. Jacob Burch, DOCape Girardeau, MO · $1,228 in drug and device payments (2025) ·
(573) 331-3350 Dr. James Vanpopering, D.O.Cape Girardeau, MO · No drug or device payments recorded (2025) ·
(217) 273-4657 Dr. Louis Kouo, MDCape Girardeau, MO · No drug or device payments recorded (2025) ·
(573) 334-0341 Dr. Matthew Coleman, M.D.Cape Girardeau, MO · $1,511 in drug and device payments (2025) ·
(573) 334-8870 Dr. Matthew Gaeta, MDCape Girardeau, MO · $39 in drug and device payments (2025) ·
(573) 331-7910 Dr. Michael Freeman, M.D.Cape Girardeau, MO · $835 in drug and device payments (2025) ·
(573) 332-0700 Dr. Ronald Angles, DOCape Girardeau, MO · $122 in drug and device payments (2025) ·
(573) 331-3350 Dr. Timothy Edwards, MDCape Girardeau, MO · $810 in drug and device payments (2025) ·
(573) 334-8870 Dr. Trygve Honaas, M.D.Cape Girardeau, MO · No drug or device payments recorded (2025) ·
(573) 331-7910 Dr. Wilfred Lee, M.D.Cape Girardeau, MO · No drug or device payments recorded (2025) ·
(573) 331-3350 Dr. Larry Deffenbaugh, D.O.Carthage, MO · No drug or device payments recorded (2025) ·
(620) 783-2430 Dr. Andrew Su, MDChesterfield, MO · $31 in drug and device payments (2025) ·
(314) 529-4900 Dr. Brian Mcmorrow, MDChesterfield, MO · $143 in drug and device payments (2025) ·
(314) 529-4900 Dr. Bruce Witte, M.D.Chesterfield, MO · No drug or device payments recorded (2025) ·
(314) 434-2399 Dr. Christopher Nguyen, DOChesterfield, MO · $231 in drug and device payments (2025) ·
(314) 529-4900 Dr. David Benage, MDChesterfield, MO · No drug or device payments recorded (2025) ·
(314) 529-4900 Dr. David Cort, M.D.Chesterfield, MO · No drug or device payments recorded (2025) ·
(314) 434-2399 Dr. David Walden, M.D.Chesterfield, MO · No drug or device payments recorded (2025) ·
(314) 434-2399 Dr. Dustin James, MDChesterfield, MO · No drug or device payments recorded (2025) ·
(636) 532-0990 Dr. Elie Chahla, MDChesterfield, MO · $776 in drug and device payments (2025) ·
(366) 857-7956 Dr. Fred Williams, MDChesterfield, MO · No drug or device payments recorded (2025) ·
(314) 529-4900 Dr. Jason Haas, DOChesterfield, MO · No drug or device payments recorded (2025) ·
(314) 529-4900 Dr. Jay Marshall, MDChesterfield, MO · No drug or device payments recorded (2025) ·
(314) 878-6260 Dr. Jeffrey Kreikemeier, M.D.Chesterfield, MO · No drug or device payments recorded (2025) ·
(314) 529-4900 Dr. Jeffrey Mathews, MDChesterfield, MO · $380 in drug and device payments (2025) ·
(314) 432-5900 Dr. Jerrold Lander, M.D.Chesterfield, MO · No drug or device payments recorded (2025) ·
(314) 205-6600 Dr. Loren Marshall, MDChesterfield, MO · No drug or device payments recorded (2025) ·
(314) 529-4900 Dr. Michael Cleary, M.D.Chesterfield, MO · No drug or device payments recorded (2025) ·
(314) 434-2399 Dr. Paul Buse, M.D.Chesterfield, MO · $14 in drug and device payments (2025) ·
(314) 434-2399 Dr. Rajeev Ramgopal, MDChesterfield, MO · $182 in drug and device payments (2025) ·
(314) 529-4900 Dr. Richard Riegel, MDChesterfield, MO · $98 in drug and device payments (2025) ·
(314) 529-4900 Dr. Sajid Zafar, M.D.Chesterfield, MO · $649 in drug and device payments (2025) ·
(636) 685-7795 Dr. Sanjay Bhat, M.D.Chesterfield, MO · No drug or device payments recorded (2025) ·
(314) 729-1717 Dr. Siri Ancha, MDChesterfield, MO · $174 in drug and device payments (2025) ·
(314) 529-4900 Dr. Taylor Geisman, MDChesterfield, MO · $431 in drug and device payments (2025) ·
(314) 529-4900 Dr. Timothy Brotherton, MDChesterfield, MO · No drug or device payments recorded (2025) ·
(314) 529-4900 Dr. Abha Havaldar, MDChillicothe, MO · No drug or device payments recorded (2025) ·
(660) 214-8420 Dr. Abdul Mounaem Majzoub, MDColumbia, MO · No drug or device payments recorded (2025) · Telehealth ·
(573) 884-7600 Dr. Ahmed Swi, M.DColumbia, MO · $1,559 in drug and device payments (2025) ·
(573) 884-8445 Dr. Alhareth Al Juboori, M.D.Columbia, MO · $211 in drug and device payments (2025) · Telehealth ·
(573) 884-7600 Dr. Ameena Anees, MDColumbia, MO · $273 in drug and device payments (2025) ·
(573) 777-8818 Dr. Amin Mahdi, M.D.Columbia, MO · No drug or device payments recorded (2025) ·
(573) 882-1434 Conditions Gastroenterology providers in Missouri commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Gastroenterology providers. Individual practices vary, so confirm with the provider before booking.
- Acid reflux
- IBS
- Crohn disease
- Ulcerative colitis
- Celiac disease
- Colon cancer screening
Common questions
How many Gastroenterology providers are in Missouri?There are 411 Gastroenterology providers with active NPI records practicing in Missouri, according to federal NPPES data refreshed monthly.
Do Gastroenterology providers in Missouri offer telehealth?Yes. 59 of the 411 Gastroenterology providers in Missouri (about 14%) report offering telehealth services in CMS data.
Which cities in Missouri have the most Gastroenterology providers?Saint Louis (156), Kansas City (49), Columbia (42) have the highest concentration of Gastroenterology providers in Missouri.
How many Gastroenterology providers in Missouri received drug or device company payments?251 of 411 Gastroenterology providers in Missouri (61%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Gastroenterology providers in Missouri treat?Gastroenterology providers commonly treat acid reflux, IBS, Crohn disease, ulcerative colitis, celiac disease and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Gastroenterologists in Missouri work in independent practices or large health systems?Among 274 Gastroenterologists in Missouri enrolled in Medicare, 4% bill through a solo or small practice with fewer than 10 clinicians, 30% through a mid-size group of 10 to 99, and 66% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Gastroenterologists in Missouri work at?According to CMS facility affiliation records, the Missouri hospitals where the most Gastroenterologists hold privileges are Missouri Baptist Medical Center in Saint Louis; Barnes Jewish Hospital in Saint Louis; Barnes-Jewish West County Hospital in Creve Coeur.
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