Mitchell Nishimoto, M.D.
NPI 1003917287ActiveIndividual· Internal Medicine· Van Nuys, CA
Internal Medicine (M.D.) in Van Nuys, California, trained at University of California, Davis School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $269,781 for 2,619 claims, against $72,133 paid for services in 2024. Lilly USA, LLC was the largest of 3 companies reporting payments in 2025, $120.36 in all, mostly food and beverage.
Overview
| NPI | 1003917287 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 26, 2006 |
| Last updated in NPPES | Sep 25, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G76976 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 102 |
|---|---|
| Services billed | 658 across 12 procedure codes |
| Paid by Medicare | $72,133 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,619 · 5,894 30-day fills |
|---|---|
| Patients | 171 |
| Total drug cost | $269,781 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$120.36 · 4 payments from 3 companies
- 2024$112.06 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $52.69 | 2 |
| Dexcom, Inc. | $38.68 | 1 |
| Sanofi-Aventis U.S. LLC | $28.99 | 1 |
What the 2025 payments were for
- Food and Beverage$120.36 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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