Sunil Arani Reddy, M.D.
NPI 1578645057ActiveIndividual· Internal Medicine, Medical Oncology· Stanford, CA
Internal Medicine, Medical Oncology (M.D.) with Stanford Health Care, practicing in Stanford, California. In 2024 Medicare paid $146,585 for 311 patients, and Part D covered 148 of their prescriptions, 86% of them generic. Immunocore Limited was the largest of 6 companies reporting payments in 2025, $1,785 in all, mostly travel and lodging. Lists Stanford Health Care and 1 other hospital as hospital affiliations.
Overview
| NPI | 1578645057 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 20, 2006 |
| Last updated in NPPES | Apr 16, 2024 |
| Certified by provider | Apr 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A61643 | 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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 311 |
|---|---|
| Services billed | 1,208 across 14 procedure codes |
| Paid by Medicare | $146,585 |
Part D prescriptions in 2024
| Prescriptions (claims) | 148 · 191 30-day fills |
|---|---|
| Patients | 49 |
| Total drug cost | $103,980 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$1,785 · 17 payments from 6 companies
- 2024$385.31 · 11 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Immunocore Limited | $1,145 | 3 |
| Taiho Oncology, Inc. | $207.41 | 3 |
| Astrazeneca Pharmaceuticals LP | $141.05 | 3 |
| Pfizer Inc. | $124.61 | 5 |
| Regeneron Pharmaceuticals, Inc. | $115.89 | 1 |
What the 2025 payments were for
- Travel and Lodging$1,084 · 5 payments
- Food and Beverage$492.74 · 10 payments
- Compensation for serving as faculty or as a speaker for a medical education program$208.31 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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