Ruwan Gunaratne, MD
NPI 1538664461ActiveIndividual· Internal Medicine, Hematology & Oncology· Stanford, CA
Internal Medicine, Hematology & Oncology (MD) in Stanford, California, trained at Duke University School of Medicine (class of 2018). Part D covered 13 prescriptions written in 2024.
Overview
| NPI | 1538664461 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 23, 2018 |
| Last updated in NPPES | Jan 27, 2026 |
| Certified by provider | Jan 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A163648 | CA |
| Internal Medicine, Medical Oncology | 207RX0202X | A163648 | CA |
| Internal Medicine | 207R00000X | A163648 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Internal Medicine, Hematology | 207RH0000X | A163648 | 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 - Hematology/Oncology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 13 · 22 30-day fills |
|---|---|
| Total drug cost | $6,905 |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, 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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