Benjamin Leach, M.D.
NPI 1497026140ActiveIndividual· Internal Medicine, Hematology & Oncology· Mission Hills, CA
Internal Medicine, Hematology & Oncology (M.D.) in Mission Hills, California, trained at Tulane University School of Medicine (class of 2011). In 2024 Medicare paid $2,604,041 for 494 patients, and Part D covered 1,047 of their prescriptions, 71% of them generic. Boston Scientific Corporation was the largest of 3 companies reporting payments in 2025, $233.73 in all, mostly food and beverage.
Overview
| NPI | 1497026140 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jan 25, 2012 |
| Last updated in NPPES | Nov 11, 2020 |
| Certified by provider | Nov 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A122493 | 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 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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 494 |
|---|---|
| Services billed | 147,339 across 117 procedure codes |
| Paid by Medicare | $2,604,041 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,047 · 1,369 30-day fills |
|---|---|
| Patients | 165 |
| Total drug cost | $2,764,473 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Tulane University School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Hospital affiliations
- Adventist Health Simi ValleySimi Valley, CA
- Henry Mayo Newhall HospitalValencia, CA
- Northridge Hospital Medical CenterNorthridge, CA
- Providence Holy Cross Medical CenterMission Hills, CA
Industry payments (Open Payments)
- 2025$233.73 · 4 payments from 3 companies
- 2024$5,467 · 10 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $156.37 | 1 |
| Kite Pharma, Inc. | $46.71 | 2 |
| Pfizer Inc. | $30.65 | 1 |
What the 2025 payments were for
- Food and Beverage$203.08 · 3 payments
- Education$30.65 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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