Mohammadbagher Ziari, MD
NPI 1962601047ActiveIndividual· Internal Medicine, Hematology & Oncology· Corona, CA
Internal Medicine, Hematology & Oncology (MD) with Uc Regents, practicing in Corona, California. Their prescriptions cost Medicare Part D more than their services did: $354,768 for 327 claims, against $95,141 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 11 companies reporting payments in 2025, $291,444 in all, mostly speaking and faculty fees. Lists Hoag Memorial Hospital Presbyterian and 1 other hospital as hospital affiliations.
Overview
| NPI | 1962601047 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 17, 2007 |
| Last updated in NPPES | Dec 3, 2020 |
| Certified by provider | Dec 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A118844 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 48712 | CO |
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 | 186 |
|---|---|
| Services billed | 713 across 9 procedure codes |
| Paid by Medicare | $95,141 |
Part D prescriptions in 2024
| Prescriptions (claims) | 327 · 447 30-day fills |
|---|---|
| Patients | 60 |
| Total drug cost | $354,768 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Uc RegentsOrange, CA · 319 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$291,444 · 229 payments from 11 companies
- 2024$282,331 · 272 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $171,203 | 119 |
| Regeneron Healthcare Solutions, Inc. | $67,280 | 62 |
| Daiichi Sankyo Inc. | $29,442 | 23 |
| E.R. Squibb & Sons, L.L.C. | $12,105 | 9 |
| Emd Serono, Inc. | $5,019 | 5 |
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$231,129 · 64 payments
- Travel and Lodging$38,967 · 82 payments
- Consulting Fee$16,685 · 14 payments
- Food and Beverage$4,662 · 69 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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