Thomas Chen, MD
NPI 1457575417ActiveIndividual· Internal Medicine, Nephrology· Honolulu, HI
Internal Medicine, Nephrology (MD) with Hawaii Permanente Medical Group Inc, practicing in Honolulu, Hawaii. Their prescriptions cost Medicare Part D more than their services did: $161,859 for 1,497 claims, against $13,849 paid for services in 2024. Apellis Pharmaceuticals, Inc. was the largest of 5 companies reporting payments in 2025, $509.54 in all, mostly food and beverage. Lists Kaiser Foundation Hospital as a hospital affiliation.
Overview
| NPI | 1457575417 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 12, 2007 |
| Last updated in NPPES | Jul 12, 2021 |
| Certified by provider | Jul 12, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | MD-12251 | 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 - Nephrology (HI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 54 |
|---|---|
| Services billed | 150 across 11 procedure codes |
| Paid by Medicare | $13,849 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,497 · 3,907 30-day fills |
|---|---|
| Patients | 275 |
| Total drug cost | $161,859 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Hawaii Permanente Medical Group IncHonolulu, HI · 704 clinicians
Hospital affiliation
- Kaiser Foundation HospitalHonolulu, HI
Other facilities
- Usrc Pearlridge DialysisDialysis facility · Aiea, HI
Industry payments (Open Payments)
- 2025$509.54 · 5 payments from 5 companies
- 2024$69.11 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Apellis Pharmaceuticals, Inc. | $137.27 | 1 |
| Novartis Pharmaceuticals Corporation | $133.04 | 1 |
| Sanofi-Aventis U.S. LLC | $111.68 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $84.10 | 1 |
| Iovance Biotherapeutics, Inc. | $43.45 | 1 |
What the 2025 payments were for
- Food and Beverage$509.54 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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