Matthew Ishiki
NPI 1023767332ActiveIndividual· Emergency Medicine· Visalia, CA
Emergency Medicine in Visalia, California, trained at University of California, Davis School of Medicine (class of 2021). Mostly services rather than prescriptions: Medicare paid $5,691 for 39 patients in 2024, with only 41 Part D claims. Stryker Corporation reported $20.50 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1023767332 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Mar 22, 2022 |
| Last updated in NPPES | Jun 14, 2024 |
| Certified by provider | Jun 14, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A189460 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 53 across 8 procedure codes |
| Paid by Medicare | $5,691 |
Part D prescriptions in 2024
| Prescriptions (claims) | 41 · 41 30-day fills |
|---|---|
| Patients | 34 |
| Total drug cost | $456.21 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Emergency Medicine |
Medical group
- Cep America - CaliforniaPomona, CA · 1,292 clinicians
Hospital affiliations
- Adventist Health BakersfieldBakersfield, CA
- Adventist Health DelanoDelano, CA
- Adventist Health HanfordHanford, CA
- Adventist Health TulareTulare, CA
- Kaweah Health Medical CenterVisalia, CA
Industry payments (Open Payments)
- 2025$20.50 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $20.50 | 1 |
What the 2025 payments were for
- Food and Beverage$20.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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