Marc J. Chernoff, D.O.
NPI 1770593899ActiveIndividual· Internal Medicine, Hematology & Oncology· Horsham, PA
Internal Medicine, Hematology & Oncology (D.O.) in Horsham, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 1990). In 2024 Medicare paid $4,402,572 for 804 patients, and Part D covered 1,382 of their prescriptions, 53% of them generic. Janssen Biotech, Inc. was the largest of 43 companies reporting payments in 2025, $3,328 in all, mostly food and beverage.
Overview
| NPI | 1770593899 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Aug 9, 2006 |
| Last updated in NPPES | Sep 3, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | OS007426L | PA |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 804 |
|---|---|
| Services billed | 272,844 across 116 procedure codes |
| Paid by Medicare | $4,402,572 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,382 · 1,978 30-day fills |
|---|---|
| Patients | 284 |
| Total drug cost | $3,972,989 |
| Generic share | 53% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Alliance Cancer Specialists P.C.Sellersville, PA · 43 clinicians
Hospital affiliations
- Doylestown HospitalDoylestown, PA
- Holy Redeemer Hospital and Medical CenterMeadowbrook, PA
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Jefferson Abington HospitalAbington, PA
- St Luke's Hospital - Grand View CampusSellersville, PA
Industry payments (Open Payments)
- 2025$3,328 · 149 payments from 43 companies
- 2024$1,145 · 48 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $313.36 | 21 |
| Novartis Pharmaceuticals Corporation | $300.02 | 14 |
| Pfizer Inc. | $222.49 | 9 |
| Abbvie Inc. | $222.16 | 9 |
| Gilead Sciences, Inc. | $188.72 | 8 |
What the 2025 payments were for
- Food and Beverage$3,316 · 148 payments
- Education$12.42 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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