MOHAMMAD A HAJJAR MD A PROFESSIONAL CORP
NPI 1396617700
Internal Medicine - Interventional Cardiology in Santa Ana, CA

Q: What is Mohammad A Hajjar MD A Professional Corp's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Active since September 23, 2025

999 N TUSTIN AVE STE 205, SANTA ANA, CA 92705(714) 671-2626(714) 667-8088 Get Directions Write a Review

NPPES record last updated: September 23, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Mohammad A Hajjar Md A Professional Corp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MOHAMMAD A HAJJAR MD A PROFESSIONAL CORP (NPI 1396617700) is a healthcare organization registered as an interventional cardiology in Santa Ana, California and active in the NPI registry since September 2025. The organization lists Mohammad Anas Hajjar, President, as its authorized official.

NPPES Registry Identity

NPI1396617700

Entity TypeOrganization

Primary Taxonomy207RI0011X

Legal Business NameMOHAMMAD A HAJJAR MD A PROFESSIONAL CORP

Location Address999 N TUSTIN AVE STE 205Santa Ana, CA 92705-6506

Mailing Address999 N Tustin Ave Ste 205Santa Ana, CA 92705-6506 · (714) 617-2626 · Fax (714) 667-8088

Phone(714) 671-2626

Fax(714) 667-8088

Organization SubpartNo

Authorized OfficialMohammad Anas HajjarPresident · (714) 617-2626

Enumeration DateSeptember 23, 2025

NPPES CertifiedSeptember 23, 2025

✔ NPI 1396617700 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Interventional CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RI0011X

Definition

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

999 N TUSTIN AVE STE 205, Santa Ana, CA 92705

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mohammad A Hajjar Md A Professional Corp 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 Mohammad A Hajjar MD A Professional Corp, which bills Medicare for the services this clinician delivers.

Clinician (1)

Mohammad Hajjar, M.D

Cardiovascular Disease (Cardiology)

NPI 1235350893

999 N TUSTIN AVE STE 205
Santa Ana, CA 92705

(714) 617-2626

✔ PECOS✔ Accepts MedicareSame address

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 Mohammad A Hajjar MD A Professional Corp's NPI number?

The NPI number for Mohammad A Hajjar MD A Professional Corp is 1396617700. It was assigned to this organization in the NPPES registry on September 23, 2025.

Where is Mohammad A Hajjar MD A Professional Corp located?

Mohammad A Hajjar MD A Professional Corp is located at 999 N Tustin Ave Ste 205, Santa Ana, CA 92705. The listed phone number is (714) 671-2626.

What is Mohammad A Hajjar MD A Professional Corp's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Is Mohammad A Hajjar MD A Professional Corp enrolled in Medicare?

Yes. Mohammad A Hajjar MD A Professional Corp is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mohammad A Hajjar MD A Professional Corp?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiovascular Disease (Cardiology)) reassigns their Medicare billing to Mohammad A Hajjar MD A Professional Corp. 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 Mohammad A Hajjar MD A Professional Corp was last updated on September 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.