Mark David Nishihara, M.D.
NPI 1134330491ActiveIndividual· Internal Medicine· Aiea, HI
Internal Medicine (M.D.) in Aiea, Hawaii, trained at University of Hawaii John A. Burns School of Medicine (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $728,441 for 5,876 claims, against $67,456 paid for services in 2024. Amgen Inc. was the largest of 14 companies reporting payments in 2025, $1,538 in all, mostly food and beverage.
Overview
| NPI | 1134330491 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 25, 2007 |
| Last updated in NPPES | Feb 11, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD15074 | HI |
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 (HI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 350 |
|---|---|
| Services billed | 1,504 across 17 procedure codes |
| Paid by Medicare | $67,456 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,876 · 15,448 30-day fills |
|---|---|
| Patients | 461 |
| Total drug cost | $728,441 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Pearl City Medical Associates IncAiea, HI · 8 clinicians
Hospital affiliations
- Kapiolani Medical Center for Women & ChildrenHonolulu, HI
- Pali Momi Medical CenterAiea, HI
- The Queens Medical CenterHonolulu, HI
Other facilities
- Bayada Home Health CareHome health agency · Honolulu, HI
Industry payments (Open Payments)
- 2025$1,538 · 88 payments from 14 companies
- 2024$1,146 · 86 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $405.95 | 19 |
| Novo Nordisk Inc | $208.45 | 10 |
| Astrazeneca Pharmaceuticals LP | $158.62 | 14 |
| Glaxosmithkline, LLC. | $158.42 | 10 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $145.03 | 12 |
What the 2025 payments were for
- Food and Beverage$1,363 · 87 payments
- Consulting Fee$175.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 54 internal medicine physicians in Aiea · All internal medicine physicians in Hawaii