Jose J. Diaz, M.D.
NPI 1306880836ActiveIndividual· Emergency Medicine· Chino, CA
Emergency Medicine (M.D.) in Chino, California, trained at University of California, San Francisco School of Medicine (class of 1996). 198 Medicare patients in 2024, $25,735 paid; nearly all of their 338 Part D prescriptions were generic (96%). Axsome Therapeutics, Inc. reported $75.43 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1306880836 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 15, 2006 |
| Last updated in NPPES | Nov 16, 2022 |
| Certified by provider | Nov 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A64744 | 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); Practitioner - Emergency Medicine (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 198 |
|---|---|
| Services billed | 320 across 30 procedure codes |
| Paid by Medicare | $25,735 |
Part D prescriptions in 2024
| Prescriptions (claims) | 338 · 348 30-day fills |
|---|---|
| Patients | 202 |
| Total drug cost | $1,488 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Emergency Medicine |
Hospital affiliations
- Corona Regional Medical CenterCorona, CA
- Northern Nevada Medical CenterSparks, NV
- San Dimas Community HospitalSan Dimas, CA
Industry payments (Open Payments)
- 2025$75.43 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axsome Therapeutics, Inc. | $75.43 | 2 |
What the 2025 payments were for
- Food and Beverage$75.43 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 emergency medicine physicians in Chino · All emergency medicine physicians in California