Tariq Mahmood, M.D.
NPI 1104874171ActiveIndividual· Internal Medicine, Hematology & Oncology· Orange, CA
Internal Medicine, Hematology & Oncology (M.D.) with Providence Medical Foundation, practicing in Orange, California. Their prescriptions cost Medicare Part D more than their services did: $3,647,900 for 1,361 claims, against $114,544 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 48 companies reporting payments in 2025, $5,321 in all, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1104874171 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 4, 2006 |
| Last updated in NPPES | Apr 28, 2023 |
| Certified by provider | Apr 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A34660 | CA |
| Specialist | 174400000X | A34660 | 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 | 435 |
|---|---|
| Services billed | 1,452 across 29 procedure codes |
| Paid by Medicare | $114,544 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,361 · 2,365 30-day fills |
|---|---|
| Patients | 254 |
| Total drug cost | $3,647,900 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 1971 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Providence St. Joseph HospitalOrange, CA
Industry payments (Open Payments)
- 2025$5,321 · 265 payments from 48 companies
- 2024$4,637 · 237 payments from 45 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $536.62 | 24 |
| Pfizer Inc. | $358.94 | 18 |
| Celgene Corporation | $318.85 | 25 |
| Janssen Biotech, Inc. | $301.25 | 14 |
| Novartis Pharmaceuticals Corporation | $293.63 | 14 |
What the 2025 payments were for
- Food and Beverage$5,166 · 262 payments
- Education$154.82 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 hematologist-oncologists in Orange · All hematologist-oncologists in California