Neil Andrew Louwrens, M.D.
NPI 1174621320ActiveIndividual· Internal Medicine· Red Bluff, CA
Internal Medicine (M.D.) with David B. Hammer, practicing in Red Bluff, California. 209 Medicare patients in 2024, $80,967 paid; nearly all of their 437 Part D prescriptions were generic (92%). Astrazeneca Pharmaceuticals LP was the largest of 4 companies reporting payments in 2025, $320.58 in all, mostly food and beverage. Lists Adventist Health Twin Cities and 1 other hospital as hospital affiliations.
Overview
| NPI | 1174621320 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 20, 2006 |
| Last updated in NPPES | Sep 18, 2023 |
| Certified by provider | Sep 18, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | C52662 | CA |
| Internal Medicine | 207R00000X | 6630A | WY |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 209 |
|---|---|
| Services billed | 1,799 across 32 procedure codes |
| Paid by Medicare | $80,967 |
Part D prescriptions in 2024
| Prescriptions (claims) | 437 · 524 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $26,981 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Emergency Medicine |
| Telehealth | Offers telehealth |
Medical group
- David B. HammerTempleton, CA · 123 clinicians
Hospital affiliations
- Adventist Health Twin CitiesTempleton, CA
- French Hospital Medical CenterSan Luis Obispo, CA
Other facilities
- Central Coast Home Health IncHome health agency · San Luis Obispo, CA
Industry payments (Open Payments)
- 2025$320.58 · 5 payments from 4 companies
- 2024$460.83 · 18 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $145.64 | 1 |
| Novo Nordisk Inc | $138.61 | 2 |
| Actelion Pharmaceuticals US, Inc. | $21.83 | 1 |
| Smith+nephew, Inc. | $14.50 | 1 |
What the 2025 payments were for
- Food and Beverage$320.58 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Red Bluff
- 1295715340
- 1952663627
- 1598804205
- 1053451625
- 1487177796
- 1700388915
- 1518459858
- 1972675023
- 1265004824
- 1922364967
- 1265449078
- 1124153721