Stephen Ken Miyasato, MD
NPI 1477536563ActiveIndividual· Internal Medicine· Aiea, HI
Internal Medicine (MD) in Aiea, Hawaii, trained at University of Hawaii John A. Burns School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $1,645,865 for 6,658 claims, against $66,319 paid for services in 2024. Amgen Inc. was the largest of 5 companies reporting payments in 2025, $1,169 in all, mostly food and beverage.
Overview
| NPI | 1477536563 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Nov 22, 2005 |
| Last updated in NPPES | Oct 20, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD 4730 | 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 | 314 |
|---|---|
| Services billed | 1,731 across 30 procedure codes |
| Paid by Medicare | $66,319 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,658 · 16,312 30-day fills |
|---|---|
| Patients | 393 |
| Total drug cost | $1,645,865 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Queens University Medical GroupHonolulu, HI · 614 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
- Careresource HawaiiHome health agency · Honolulu, HI
- Bristol Hospice - Hawaii, LLCHospice · Honolulu, HI
Industry payments (Open Payments)
- 2025$1,169 · 10 payments from 5 companies
- 2024$609.05 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $550.65 | 5 |
| Novo Nordisk Inc | $246.84 | 2 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $128.64 | 1 |
| Lilly USA, LLC | $125.00 | 1 |
| Exact Sciences Corporation | $117.89 | 1 |
What the 2025 payments were for
- Food and Beverage$1,169 · 10 payments
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