Christopher Foss, MD
NPI 1629431044ActiveIndividual· Internal Medicine, Hematology & Oncology· Santa Clarita, CA
Internal Medicine, Hematology & Oncology (MD) in Santa Clarita, California, trained at University of Arizona College of Medicine (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $1,796,892 for 1,029 claims, against $68,543 paid for services in 2024. Emd Serono, Inc. was the largest of 10 companies reporting payments in 2025, $289.24 in all, mostly food and beverage.
Overview
| NPI | 1629431044 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 2, 2016 |
| Last updated in NPPES | Mar 13, 2025 |
| Certified by provider | Mar 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A155463 | CA |
| Hospitalist | 208M00000X | A155463 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 174 |
|---|---|
| Services billed | 2,887 across 22 procedure codes |
| Paid by Medicare | $68,543 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,029 · 1,378 30-day fills |
|---|---|
| Patients | 153 |
| Total drug cost | $1,796,892 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Arizona College of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Usc Care Medical Group IncLos Angeles, CA · 1,380 clinicians
Hospital affiliation
- Henry Mayo Newhall HospitalValencia, CA
Industry payments (Open Payments)
- 2025$289.24 · 11 payments from 10 companies
- 2024$1,354 · 56 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Emd Serono, Inc. | $48.81 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $47.29 | 2 |
| Caris Mpi, Inc. | $34.64 | 1 |
| Sumitomo Pharma America, Inc. | $28.98 | 1 |
| Blueprint Medicines Corporation | $26.50 | 1 |
What the 2025 payments were for
- Food and Beverage$289.24 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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