Andrew Masaaki Osugi, M.D.
NPI 1134307382ActiveIndividual· Emergency Medicine· Berkeley, CA
Emergency Medicine (M.D.) in Berkeley, California, trained at University of California, Geffen School of Medicine (class of 2004). 635 Medicare patients in 2024, $98,379 paid; nearly all of their 258 Part D prescriptions were generic (97%).
Overview
| NPI | 1134307382 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 8, 2008 |
| Last updated in NPPES | Feb 8, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A102449 | 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 | 635 |
|---|---|
| Services billed | 758 across 25 procedure codes |
| Paid by Medicare | $98,379 |
Part D prescriptions in 2024
| Prescriptions (claims) | 258 · 264 30-day fills |
|---|---|
| Patients | 186 |
| Total drug cost | $3,103 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Emergency Medicine |
Medical group
- Cep America - CaliforniaPomona, CA · 1,292 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Novato Community HospitalNovato, 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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All 45 emergency medicine physicians in Berkeley · All emergency medicine physicians in California