Myron Ekaku Shirasu, M.D.
NPI 1316035900ActiveIndividual· Internal Medicine· Honolulu, HI
Internal Medicine (M.D.) in Honolulu, Hawaii, trained at Oregon Health Sciences University School of Medicine (class of 1963). Their prescriptions cost Medicare Part D more than their services did: $695,745 for 6,025 claims, against $142,925 paid for services in 2024. Pfizer Inc. was the largest of 14 companies reporting payments in 2025, $1,561 in all, mostly food and beverage.
Overview
| NPI | 1316035900 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 10, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD-1415 | 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 | 439 |
|---|---|
| Services billed | 1,725 across 15 procedure codes |
| Paid by Medicare | $142,925 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,025 · 16,618 30-day fills |
|---|---|
| Patients | 608 |
| Total drug cost | $695,745 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Oregon Health Sciences University School of Medicine |
|---|---|
| Graduation year | 1963 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Castle Medical CenterKailua, HI · 77 clinicians
Hospital affiliations
- Adventist Health CastleKailua, HI
- Kapiolani Medical Center for Women & ChildrenHonolulu, HI
- Kuakini Medical CenterHonolulu, HI
- Pali Momi Medical CenterAiea, HI
- The Queens Medical CenterHonolulu, HI
Other facilities
- Adventist Health Home Care ServicesHome health agency · Kaneohe, HI
- Bayada Home Health CareHome health agency · Honolulu, HI
- Careresource HawaiiHome health agency · Honolulu, HI
Industry payments (Open Payments)
- 2025$1,561 · 30 payments from 14 companies
- 2024$1,237 · 24 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $296.44 | 5 |
| Novo Nordisk Inc | $276.87 | 9 |
| Astrazeneca Pharmaceuticals LP | $164.36 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $144.88 | 2 |
| Johnson & Johnson Health Care Systems Inc. | $141.20 | 1 |
What the 2025 payments were for
- Food and Beverage$1,561 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 687 internal medicine physicians in Honolulu · All internal medicine physicians in Hawaii