Derek R. Illastron, MD
NPI 1790949956ActiveIndividual· Internal Medicine· Kahului, HI
Internal Medicine (MD) with Hawaii Permanente Medical Group Inc, practicing in Kahului, Hawaii. Part D covered 146 prescriptions written in 2024, 89% of them generic. Lists Maui Memorial Medical Center as a hospital affiliation.
Overview
| NPI | 1790949956 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 16, 2008 |
| Last updated in NPPES | Mar 19, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD-18353 | HI |
| Internal Medicine | 207R00000X | 235414 | MA |
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 - Hospitalist (HI) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 146 · 239 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $4,590 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Hawaii Permanente Medical Group IncHonolulu, HI · 704 clinicians
Hospital affiliation
- Maui Memorial Medical CenterWailuku, HI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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