Sam Mazj, MD
NPI 1043287378ActiveIndividual· Internal Medicine, Hematology & Oncology· Chico, CA
Internal Medicine, Hematology & Oncology (MD) with Enloe Specialty Physicians Inc, practicing in Chico, California. Their prescriptions cost Medicare Part D more than their services did: $7,398,543 for 2,429 claims, against $356,061 paid for services in 2024. Janssen Biotech, Inc. was the largest of 8 companies reporting payments in 2025, $15,630 in all, mostly speaking and faculty fees. Lists Adventist Health Clearlake and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1043287378 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 6, 2006 |
| Last updated in NPPES | Jan 20, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A86201 | CA |
| Internal Medicine | 207R00000X | A86201 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 865 |
|---|---|
| Services billed | 4,596 across 22 procedure codes |
| Paid by Medicare | $356,061 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,429 · 3,090 30-day fills |
|---|---|
| Patients | 319 |
| Total drug cost | $7,398,543 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Enloe Specialty Physicians IncChico, CA · 24 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Enloe HealthChico, CA
- Oroville HospitalOroville, CA
- Seneca District HospitalChester, CA
- Stanford Health CareStanford, CA
Other facilities
- Butte Home Health and HospiceHome health agency · Chico, CA
- Butte Home Health HospiceHospice · Chico, CA
- Enloe Medical Center HospiceHospice · Chico, CA
Industry payments (Open Payments)
- 2025$15,630 · 25 payments from 8 companies
- 2024$25,648 · 34 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $10,200 | 10 |
| Astrazeneca Pharmaceuticals LP | $3,502 | 6 |
| Caris Mpi, Inc. | $1,127 | 2 |
| E.R. Squibb & Sons, L.L.C. | $221.01 | 2 |
| Boston Scientific Corporation | $183.16 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$12,270 · 7 payments
- Food and Beverage$1,475 · 13 payments
- Consulting Fee$1,000 · 1 payment
- Travel and Lodging$816.20 · 3 payments
- Education$68.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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