MAZEN MAHJOUB MD INC
NPI 1548197684
Internal Medicine - Cardiovascular Disease in Warren, OH
About Mazen Mahjoub Md Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAZEN MAHJOUB MD INC (NPI 1548197684) is a healthcare organization registered as a cardiovascular disease in Warren, Ohio and active in the NPI registry since May 2026. The organization lists Mazen A Mahjoub, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mazen Mahjoub Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Mazen Mahjoub MD Inc, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mazen Mahjoub MD Inc's NPI number?
The NPI number for Mazen Mahjoub MD Inc is 1548197684. It was assigned to this organization in the NPPES registry on May 5, 2026.
Where is Mazen Mahjoub MD Inc located?
Mazen Mahjoub MD Inc is located at 9375 E Market St Ste 3, Warren, OH 44484. The listed phone number is (330) 392-0100.
What is Mazen Mahjoub MD Inc's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Mazen Mahjoub MD Inc enrolled in Medicare?
Yes. Mazen Mahjoub MD Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mazen Mahjoub MD Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiovascular Disease (Cardiology)) reassigns their Medicare billing to Mazen Mahjoub MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Mazen Mahjoub MD Inc was last updated on May 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mazen Mahjoub Md Inc · NPI 1548197684
Cardiovascular Disease organization in Warren, Ohio. Organization record, active in the CMS NPPES registry since May 5, 2026.
## Identity
- **NPI:** 1548197684 (Entity type: Organization)
- **Enumerated:** May 5, 2026
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **Organization subpart:** No
- **Authorized official:** Mazen Mahjoub, OWNER
## Practice location
- **Address:** 9375 E MARKET ST STE 3, Warren, OH 44484-5552
- **Phone:** (330) 392-0100 · **Fax:** (330) 392-0047
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Cardiovascular Disease (Cardiology)) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 14, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1548197684) · Data from the CMS NPPES public registry.