Karen J. Nakamoto, MD
NPI 1770645988ActiveIndividual· Obstetrics & Gynecology· Hilo, HI
Obstetrics & Gynecology (MD) in Hilo, Hawaii, trained at University of Hawaii John A. Burns School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $177,951 for 556 claims, against $40,581 paid for services in 2024. Amgen Inc. reported $65.92 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1770645988 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Dec 14, 2006 |
| Last updated in NPPES | Oct 24, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | MD9461 | HI |
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 - Obstetrics/Gynecology (HI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 476 |
|---|---|
| Services billed | 773 across 12 procedure codes |
| Paid by Medicare | $40,581 |
Part D prescriptions in 2024
| Prescriptions (claims) | 556 · 1,451 30-day fills |
|---|---|
| Patients | 192 |
| Total drug cost | $177,951 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Obstetrics/Gynecology |
Industry payments (Open Payments)
- 2025$65.92 · 3 payments from 1 company
- 2024$13.28 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $65.92 | 3 |
What the 2025 payments were for
- Food and Beverage$65.92 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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