William Gunter Loudon, MD
NPI 1437265816ActiveIndividual· Neurological Surgery· Laguna Niguel, CA
Neurological Surgery (MD) in Laguna Niguel, California, trained at University of Texas Medical School at Houston (class of 1991). Medicare paid $4,637 for services to 13 patients in 2024. Irras USA, Inc. was the largest of 2 companies reporting payments in 2025, $496.57 in all, mostly food and beverage.
Overview
| NPI | 1437265816 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 21, 2006 |
| Last updated in NPPES | Feb 12, 2026 |
| Certified by provider | Feb 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | A72588 | CA |
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 - Neurosurgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 32 across 12 procedure codes |
| Paid by Medicare | $4,637 |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Neurosurgery |
Industry payments (Open Payments)
- 2025$496.57 · 14 payments from 2 companies
- 2024$290.53 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Irras USA, Inc. | $475.66 | 13 |
| Telix Pharmaceuticals | $20.91 | 1 |
What the 2025 payments were for
- Food and Beverage$496.57 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Neurological Surgery providers in Laguna Niguel
- 1033499470
- 1659676245
- 1467779959
- 1215883210
- 1275791543
- 1407961188