Oscar F. Casillas, M.D.
NPI 1902930399ActiveIndividual· Emergency Medicine· Santa Monica, CA
Emergency Medicine (M.D.) in Santa Monica, California, trained at University of California, San Diego School of Medicine (class of 2004). 203 Medicare patients in 2024, $27,249 paid; nearly all of their 248 Part D prescriptions were generic (94%).
Overview
| NPI | 1902930399 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 15, 2007 |
| Last updated in NPPES | Jun 26, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A93263 | 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 | 203 |
|---|---|
| Services billed | 241 across 18 procedure codes |
| Paid by Medicare | $27,249 |
Part D prescriptions in 2024
| Prescriptions (claims) | 248 · 251 30-day fills |
|---|---|
| Patients | 122 |
| Total drug cost | $5,180 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Emergency Medicine |
Medical group
- Capital Hospitalist Medical Group IncLos Angeles, CA · 32 clinicians
Hospital affiliation
- Martin Luther King, Jr. Community HospitalLos Angeles, CA
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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