Kristina Mai Nagai, DO
NPI 1285192500ActiveIndividual· Internal Medicine· Corvallis, OR
Internal Medicine (DO) in Corvallis, Oregon, trained at Col of Osteo Med of the Pacific at Lebanon (class of 2021). Their prescriptions cost Medicare Part D more than their services did: $32,172 for 374 claims, against $10,849 paid for services in 2024. Novo Nordisk Inc reported $18.54 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1285192500 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 5, 2019 |
| Last updated in NPPES | Jul 26, 2024 |
| Certified by provider | Jul 26, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | DO221284 | OR |
| Internal Medicine | 207R00000X | PG205383 | OR |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 106 |
|---|---|
| Services billed | 156 across 19 procedure codes |
| Paid by Medicare | $10,849 |
Part D prescriptions in 2024
| Prescriptions (claims) | 374 · 696 30-day fills |
|---|---|
| Patients | 62 |
| Total drug cost | $32,172 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Col of Osteo Med of the Pacific at Lebanon |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Internal Medicine |
Medical group
- Good Samaritan Hospital CorvallisCorvallis, OR · 380 clinicians
Hospital affiliations
- Good Samaritan Regional Medical CenterCorvallis, OR
- Samaritan Albany General HospitalAlbany, OR
- Samaritan Lebanon Community HospitalLebanon, OR
- Samaritan North Lincoln HospitalLincoln City, OR
- Samaritan Pacific Community HospitalNewport, OR
Industry payments (Open Payments)
- 2025$18.54 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $18.54 | 1 |
What the 2025 payments were for
- Food and Beverage$18.54 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 135 internal medicine physicians in Corvallis · All internal medicine physicians in Oregon