Darren K. Shimabukuro, MD
NPI 1003983941ActiveIndividual· Internal Medicine· Bellflower, CA
Internal Medicine (MD) in Bellflower, California, trained at Tufts University School of Dental Medicine (class of 1990). Part D covered 512 prescriptions written in 2024, 90% of them generic.
Overview
| NPI | 1003983941 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 29, 2006 |
| Last updated in NPPES | Dec 3, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G78953 | 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 - Internal Medicine (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 512 · 1,139 30-day fills |
|---|---|
| Patients | 250 |
| Total drug cost | $13,396 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Tufts University School of Dental Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Internal Medicine |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
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 75 internal medicine physicians in Bellflower · All internal medicine physicians in California