Kori Matsuura
NPI 1588050959ActiveIndividual· Internal Medicine· Fremont, CA
Internal Medicine with Sutter Bay Medical Foundation, practicing in Fremont, California. Their prescriptions cost Medicare Part D more than their services did: $120,937 for 1,834 claims, against $43,973 paid for services in 2024. Lists Washington Hospital as a hospital affiliation.
Overview
| NPI | 1588050959 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 12, 2015 |
| Last updated in NPPES | Jun 3, 2020 |
| Certified by provider | Jun 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A146964 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 149 |
|---|---|
| Services billed | 392 across 27 procedure codes |
| Paid by Medicare | $43,973 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,834 · 4,407 30-day fills |
|---|---|
| Patients | 181 |
| Total drug cost | $120,937 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliation
- Washington HospitalFremont, 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 147 internal medicine physicians in Fremont · All internal medicine physicians in California