Christopher Michael Ahrens, D.O.
NPI 1235426297ActiveIndividual· Anesthesiology· Saint Louis, MO
Anesthesiology (D.O.) in Saint Louis, Missouri, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 2011). Medicare paid $30,153 for services to 249 patients in 2024. Vertex Pharmaceuticals Incorporated was the largest of 2 companies reporting payments in 2025, $108.58 in all, mostly food and beverage.
Overview
| NPI | 1235426297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 28, 2011 |
| Last updated in NPPES | Jun 24, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 2011017507 | 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 - Anesthesiology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 249 |
|---|---|
| Services billed | 313 across 76 procedure codes |
| Paid by Medicare | $30,153 |
Education and affiliations
| Medical school | At Still University of Health Sciences, College of Osteo Med, Kirksville |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Anesthesiology |
Medical group
- Western Anesthesiology Associates IncChesterfield, MO · 256 clinicians
Hospital affiliation
- Mercy Hospital St LouisSaint Louis, MO
Industry payments (Open Payments)
- 2025$108.58 · 2 payments from 2 companies
- 2024$147.83 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $91.11 | 1 |
| Atricure, Inc. | $17.47 | 1 |
What the 2025 payments were for
- Food and Beverage$108.58 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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