William F. Davis, MD
Specialist (MD) in Santa Ana, California, trained at Saint Louis University School of Medicine (class of 1989). Mostly services rather than prescriptions: Medicare paid $67,821 for 105 patients in 2024, with only 43 Part D claims. Integra Lifesciences Corporation reported $19.09 in payments in 2025, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1013909225 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 16, 2005 |
| Last updated in NPPES | Jan 15, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | G69230 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | William Scott Davis · General Practice/Fp | 1156 | May 27, 1986 | Los Molinos, CA |
| Name + state | William Davis · Related | 1128a1 | Mar 27, 1984 | Sacramento, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 105 |
|---|---|
| Services billed | 628 across 60 procedure codes |
| Paid by Medicare | $67,821 |
Part D prescriptions in 2024
| Prescriptions (claims) | 43 · 59 30-day fills |
|---|---|
| Patients | 12 |
| Total drug cost | $1,701 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | General Surgery |
Medical group
- Western Medical Center Trauma Group IncSanta Ana, CA · 6 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Orange County Global Medical CenterSanta Ana, CA
Industry payments (Open Payments)
- 2025$19.09 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Integra Lifesciences Corporation | $19.09 | 1 |
What the 2025 payments were for
- Food and Beverage$19.09 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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