John Mitsuo Nakayama, M.D.
NPI 1528266483ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· Pittsburgh, PA
Obstetrics & Gynecology, Gynecologic Oncology (M.D.) in Pittsburgh, Pennsylvania, trained at University of Hawaii John A. Burns School of Medicine (class of 2007). 99 Medicare patients in 2024, $47,350 paid; nearly all of their 78 Part D prescriptions were generic (97%). Merck Sharp & Dohme LLC was the largest of 7 companies reporting payments in 2025, $51,260 in all, mostly speaking and faculty fees.
Overview
| NPI | 1528266483 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 3, 2007 |
| Last updated in NPPES | Feb 24, 2021 |
| Certified by provider | Feb 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | MD472231 | PA |
| Obstetrics & Gynecology | 207V00000X | 35.123875 | OH |
| Obstetrics & Gynecology, Gynecologic Oncology | 207VX0201X | 0116023283 | VA |
| Obstetrics & Gynecology | 207V00000X | 142503 | NC |
| Obstetrics & Gynecology, Gynecologic Oncology | 207VX0201X | 35.123875 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gynecological Oncology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 99 |
|---|---|
| Services billed | 409 across 41 procedure codes |
| Paid by Medicare | $47,350 |
Part D prescriptions in 2024
| Prescriptions (claims) | 78 · 81 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $29,730 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Gynecological Oncology |
Medical group
- Allegheny ClinicPittsburgh, PA · 2,389 clinicians
Hospital affiliations
- Allegheny General HospitalPittsburgh, PA
- Allegheny Valley HospitalNatrona, PA
- Saint Vincent HospitalErie, PA
- West Penn HospitalPittsburgh, PA
Industry payments (Open Payments)
- 2025$51,260 · 42 payments from 7 companies
- 2024$34,590 · 40 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $23,731 | 14 |
| Eisai Inc. | $18,649 | 15 |
| Astrazeneca Pharmaceuticals LP | $8,042 | 9 |
| Abbvie Inc. | $725.00 | 1 |
| Regeneron Pharmaceuticals, Inc. | $80.74 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$27,290 · 5 payments
- Compensation for serving as faculty or as a speaker for a medical education program$14,578 · 6 payments
- Travel and Lodging$4,796 · 8 payments
- Consulting Fee$3,391 · 3 payments
- Food and Beverage$1,205 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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