Sabrina Grassl Diaz, MD
NPI 1609800622ActiveIndividual· Emergency Medicine· Santa Monica, CA
Emergency Medicine (MD) in Santa Monica, California, trained at Saint Louis University School of Medicine (class of 1998). In 2024 Medicare paid $77,001 for 608 patients, and Part D covered 173 of their prescriptions, 86% of them generic. Amgen Inc. was the largest of 4 companies reporting payments in 2025, $275.81 in all, mostly food and beverage.
Overview
| NPI | 1609800622 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 10, 2006 |
| Last updated in NPPES | Apr 8, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A72139 | 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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 608 |
|---|---|
| Services billed | 1,139 across 57 procedure codes |
| Paid by Medicare | $77,001 |
Part D prescriptions in 2024
| Prescriptions (claims) | 173 · 178 30-day fills |
|---|---|
| Patients | 136 |
| Total drug cost | $4,863 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Emergency Medicine |
Medical group
- Providence Saint Johns Medical FoundationSanta Monica, CA · 281 clinicians
Hospital affiliation
- Saint John's Health CenterSanta Monica, CA
Industry payments (Open Payments)
- 2025$275.81 · 4 payments from 4 companies
- 2024$154.09 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $130.25 | 1 |
| Recordati_rare_diseases_inc. | $103.57 | 1 |
| Astrazeneca Pharmaceuticals LP | $22.37 | 1 |
| Lilly USA, LLC | $19.62 | 1 |
What the 2025 payments were for
- Food and Beverage$275.81 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 60 emergency medicine physicians in Santa Monica · All emergency medicine physicians in California