Edwin Jonathan Chiu, M.D.
NPI 1659392223ActiveIndividual· Internal Medicine, Nephrology· Napa, CA
Internal Medicine, Nephrology (M.D.) in Napa, California, trained at University of Rochester School of Medicine and Dentistry (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $173,983 for 1,330 claims, against $14,932 paid for services in 2024.
Overview
| NPI | 1659392223 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 21, 2006 |
| Last updated in NPPES | Dec 15, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A96262 | CA |
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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 24 |
|---|---|
| Services billed | 363 across 18 procedure codes |
| Paid by Medicare | $14,932 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,330 · 3,642 30-day fills |
|---|---|
| Patients | 254 |
| Total drug cost | $173,983 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Rochester School of Medicine and Dentistry |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliations
- Kaiser Foundation Hospital - VacavilleVacaville, CA
- Kaiser Foundation Hospital and Rehab CenterVallejo, CA
Other facilities
- Davita Napa Dialysis CenterDialysis facility · Napa, CA
- Davita Sunflower Home TrainingDialysis facility · Fairfield, CA
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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