Ajay K. Chalasani, MD
NPI 1487760385ActiveIndividual· Anesthesiology· O Fallon, MO
Anesthesiology (MD) with Washington University and 1 other group, practicing in O Fallon, Missouri. Medicare paid $1,255 for services to 20 patients in 2024. Heron Therapeutics, Inc. reported $153.79 in payments in 2025, mostly food and beverage. Lists Ssm St Joseph Health Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1487760385 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 22, 2006 |
| Last updated in NPPES | Apr 15, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 2002019228 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Anesthesiology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 20 |
|---|---|
| Services billed | 28 across 8 procedure codes |
| Paid by Medicare | $1,255 |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Anesthesiology |
Medical groups
- Washington UniversitySaint Louis, MO · 3,029 clinicians
- Metro-West Anesthesia Group IncSaint Charles, MO · 205 clinicians
Hospital affiliations
- Ssm St Joseph Health CenterSaint Charles, MO
- Ssm St Joseph Hospital WestLake Saint Louis, MO
Industry payments (Open Payments)
- 2025$153.79 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heron Therapeutics, Inc. | $153.79 | 3 |
What the 2025 payments were for
- Food and Beverage$153.79 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Anesthesiology providers in O Fallon
- 1033484795
- 1568780419
- 1063542793
- 1548905276
- 1952342206
- 1083693501
- 1801990437
- 1033198551
- 1063442648
- 1326626052
- 1588645345
- 1235690926