Mazen Mahjoub, MD
NPI 1679512081 · Specialist · Warren, OH
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mazen Mahjoub, MD is a Specialist provider in Warren, OH (NPI 1679512081).
Provider details
- NPI number
- 1679512081
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35-07-2671M (OH)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,705 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,461 | $116 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 1,374 | $13 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 815 | $71 |
| Technetium Tc-99m Sestamibi, Diagnostic, Per Study DoseA9500 | 669 | $56 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 412 | $170 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision and Review By Physician |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 1,567 | 426 |
| Apixabanbrand: Eliquis | 1,133 | 230 |
| Furosemide | 824 | 211 |
| Isosorbide Mononitratebrand: Isosorbide Mononitrate Er | 597 | 175 |
| Atenolol | 586 | 161 |
| Lisinopril | 566 | 152 |
| Clopidogrel Bisulfatebrand: Clopidogrel |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,375 across 85 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-05
- Last updated
- 2007-07-09
Frequently asked questions
- What is Mazen Mahjoub's NPI number?
- Mazen Mahjoub's National Provider Identifier (NPI) is 1679512081, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mazen Mahjoub's specialty?
- Mazen Mahjoub is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Mazen Mahjoub located?
- Mazen Mahjoub's practice location on file with NPPES is 9375 E Market St, Warren, OH 44484-5515.
- What is Mazen Mahjoub's phone number?
- The practice phone number listed in the NPPES registry for Mazen Mahjoub is (330) 392-0100.
- Does Mazen Mahjoub accept Medicare?
- Mazen Mahjoub is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mazen Mahjoub's NPI active?
- Yes — Mazen Mahjoub's NPI (1679512081) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.