Chaudhary Mobin Khan, MD
NPI 1649252461ActiveIndividual· Internal Medicine, Gastroenterology· O Fallon, MO
Internal Medicine, Gastroenterology (MD) in O Fallon, Missouri, trained at Saint Louis University School of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $261,089 for 1,767 claims, against $67,729 paid for services in 2024. Regeneron Healthcare Solutions, Inc. was the largest of 8 companies reporting payments in 2025, $373.22 in all, mostly food and beverage.
Overview
| NPI | 1649252461 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 17, 2005 |
| Last updated in NPPES | Apr 2, 2021 |
| Certified by provider | Mar 12, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 111121 | MO |
| Internal Medicine, Hepatology | 207RI0008X | 111121 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 380 |
|---|---|
| Services billed | 714 across 34 procedure codes |
| Paid by Medicare | $67,729 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,767 · 2,952 30-day fills |
|---|---|
| Patients | 710 |
| Total drug cost | $261,089 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Gastroenterology |
Medical group
- Physician Groups LcFarmington, MO · 521 clinicians
Hospital affiliations
- Barnes-Jewish St Peters HospitalSaint Peters, MO
- Missouri Baptist Medical CenterSaint Louis, MO
- Progress West HospitalOfallon, MO
Industry payments (Open Payments)
- 2025$373.22 · 13 payments from 8 companies
- 2024$1,561 · 63 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $156.69 | 2 |
| Abbvie Inc. | $74.69 | 3 |
| Janssen Biotech, Inc. | $34.89 | 2 |
| Aimmune Therapeutics, Inc. | $34.86 | 2 |
| Madrigal Pharmaceuticals | $20.75 | 1 |
What the 2025 payments were for
- Food and Beverage$373.22 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in O Fallon
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- 1437110681
All Internal Medicine, Gastroenterology providers in Missouri →