Mazen A. Mahjoub, MD
NPI 1679512081ActiveIndividual· Specialist· Warren, OH
Specialist (MD) in Warren, Ohio, licensed in OH, with an NPI issued in June 2006. Their prescriptions cost Medicare Part D more than their services did: $2,439,652 for 12,137 claims, against $499,980 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 12 companies reporting payments in 2025, $991.77 in all, mostly food and beverage. Lists Hmhp St Elizabeth Boardman Health Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1679512081 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 5, 2006 |
| Last updated in NPPES | Jul 9, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 35-07-2671M | OH |
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 - Cardiovascular Disease (Cardiology) (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,404 |
|---|---|
| Services billed | 13,941 across 38 procedure codes |
| Paid by Medicare | $499,980 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,137 · 25,917 30-day fills |
|---|---|
| Patients | 1,635 |
| Total drug cost | $2,439,652 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Hospital affiliations
- Hmhp St Elizabeth Boardman Health CenterBoardman, OH
- Mh St Elizabeth Youngstown HospitalYoungstown, OH
- Mh St Joseph Warren HospitalWarren, OH
Industry payments (Open Payments)
- 2025$991.77 · 50 payments from 12 companies
- 2024$1,375 · 85 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $200.83 | 11 |
| E.R. Squibb & Sons, L.L.C. | $169.91 | 10 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $154.29 | 8 |
| Amgen Inc. | $111.53 | 6 |
| Abbott Laboratories | $93.12 | 1 |
What the 2025 payments were for
- Food and Beverage$991.77 · 50 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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