Gary David Koenig, MD
Gary David Koenig, MD is a Gastroenterology in Hazelwood, Missouri. Graduated from Saint Louis University School of Medicine in 1986, 40 years ago. Practices with Physician Groups Lc, a 524-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.
- Years since qualifying
- 40
- Trained at
- Saint Louis University School of Medicine
- Licensed in
- MO
- In the registry since
- 2005
- Specialties on file
- 2
What do these letters mean?
- MD — Doctor of Medicine
- A physician who completed allopathic medical school.
Practice location Address checks out
100 Village SqHazelwood, MO 63042-1820
Phone: (314) 355-4010
Fax: (314) 355-9484
Show map & directions
Directions in Google Maps · Apple Maps · OpenStreetMap
Pin is approximate — placed at the ZIP-code centre, not the exact door.
Additional practice locations (1)
- 20 Progress Point Pkwy Ste 206, O Fallon, MO 63368-2207 — (636) 344-1073
Specialties & licences
| Gastroenterology Physician (primary) | Taxonomy 207RG0100X · Licence MDR3G44 (MO) |
|---|---|
| Gastroenterology Physician | Taxonomy 207RG0100X · Licence RG344 (MO) |
Record details
| NPI number | 1861485724 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD |
| Sole proprietor | Yes |
| NPI enumerated | August 25, 2005 |
| Last updated in NPPES | February 16, 2026 |
| Certification date | February 16, 2026 |
| Mailing address | Po Box 23340, Saint Louis, MO 63156-3340 |
Medicare enrollment
| Medicare specialty | GASTROENTEROLOGY |
|---|---|
| Also practises | INTERNAL MEDICINE |
| Medical school | SAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE |
| Graduated | 1986 (40 years in practice) |
| Group practice | Physician Groups Lc — 524 clinicians |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
| Practice locations | 3 on file with Medicare |
Other providers in Hazelwood
-
Digestive Care Consultants, Inc
100 Village Sq, Hazelwood, MO 63042-1820 · (314) 298-1600
-
Digestive Disease Specialists Inc
100 Village Sq, Hazelwood, MO 63042-1820 · (314) 355-4010
-
Robyn Leith Haithcock Sr., DO
100 Village Sq, Hazelwood, MO 63042-1820 · (314) 355-4010
-
David W Landau, MD
100 Village Sq, Hazelwood, MO 63042-1820 · (314) 355-4010
-
David M Margolis, MD
100 Village Sq, Hazelwood, MO 63042-1820 · (314) 355-4010