Gregory Scott Brewster, M.D.
NPI 1639164007ActiveIndividual· Emergency Medicine· Manhattan Beach, CA
Emergency Medicine (M.D.) in Manhattan Beach, California, licensed in CA, with an NPI issued in September 2005. 185 Medicare patients in 2024, $27,008 paid; nearly all of their 75 Part D prescriptions were generic (95%).
Overview
| NPI | 1639164007 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 13, 2005 |
| Last updated in NPPES | Aug 13, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A61173 | CA |
| Emergency Medicine, Emergency Medical Services | 207PE0004X | A61173 | 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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 185 |
|---|---|
| Services billed | 314 across 15 procedure codes |
| Paid by Medicare | $27,008 |
Part D prescriptions in 2024
| Prescriptions (claims) | 75 · 75 30-day fills |
|---|---|
| Patients | 51 |
| Total drug cost | $730.61 |
| Generic share | 95% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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