Warren Davis, M.D.
NPI 1235422676ActiveIndividual· Anesthesiology· Fullerton, CA
Anesthesiology (M.D.) in Fullerton, California, trained at University of California, Irvine, California College of Medicine (class of 2011). Medicare paid $52,701 for services to 218 patients in 2024. Merck Sharp & Dohme LLC was the largest of 3 companies reporting payments in 2025, $100.17 in all, mostly food and beverage.
Overview
| NPI | 1235422676 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 18, 2011 |
| Last updated in NPPES | Jul 22, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | A126164 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 218 |
|---|---|
| Services billed | 286 across 64 procedure codes |
| Paid by Medicare | $52,701 |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Anesthesiology |
Medical group
- Newport Harbor Anesthesia Consultants Medical Group IncNewport Beach, CA · 95 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Hoag Orthopedic InstituteIrvine, CA
Industry payments (Open Payments)
- 2025$100.17 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $65.80 | 3 |
| Janssen Biotech, Inc. | $20.53 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $13.84 | 1 |
What the 2025 payments were for
- Food and Beverage$100.17 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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