Khosrow Mahdavi, MD
NPI 1275536773ActiveIndividual· Internal Medicine, Hematology & Oncology· Costa Mesa, CA
Internal Medicine, Hematology & Oncology (MD) with Uc Regents, practicing in Costa Mesa, California. Their prescriptions cost Medicare Part D more than their services did: $2,066,156 for 704 claims, against $237,345 paid for services in 2024. Amgen Inc. reported $32.72 in payments in 2025, mostly education. Lists Hoag Memorial Hospital Presbyterian and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1275536773 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 27, 2005 |
| Last updated in NPPES | Nov 15, 2023 |
| Certified by provider | Nov 15, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A33589 | CA |
| Internal Medicine, Hematology | 207RH0000X | A33589 | CA |
| Specialist | 174400000X | A33589 | CA |
| Internal Medicine, Medical Oncology | 207RX0202X | A33589 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 526 |
|---|---|
| Services billed | 1,944 across 9 procedure codes |
| Paid by Medicare | $237,345 |
Part D prescriptions in 2024
| Prescriptions (claims) | 704 · 1,291 30-day fills |
|---|---|
| Patients | 126 |
| Total drug cost | $2,066,156 |
| Generic share | 66% of claims |
Education and affiliations
| Graduation year | 1969 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hematology, Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Uc RegentsOrange, CA · 319 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$32.72 · 1 payment from 1 company
- 2024$121.63 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $32.72 | 1 |
What the 2025 payments were for
- Education$32.72 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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