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AHMAD HAJJ MD INC
NPI 1306274923
Orthopaedic Surgery in Santa Ana, CA

Active since October 16, 2013
1220 HEMLOCK WAY, 203, SANTA ANA, CA 92707(714) 957-5721(714) 957-5872 Get Directions Write a Review

NPPES record last updated: January 20, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Ahmad Hajj Md Inc NPPES

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

AHMAD HAJJ MD INC (NPI 1306274923) is a healthcare organization registered as an orthopaedic surgery in Santa Ana, California and active in the NPI registry since October 2013. The organization lists Ahmad Hajj, President, as its authorized official.

NPPES Registry Identity

NPI1306274923
Entity TypeOrganization
Primary Taxonomy207X00000X
Legal Business NameAHMAD HAJJ MD INC
Location Address1220 HEMLOCK WAY, 203Santa Ana, CA 92707-3650
Mailing Address1220 Hemlock Way, 203Santa Ana, CA 92707-3650 · (714) 957-5721 · Fax (714) 957-5872
Phone(714) 957-5721
Fax(714) 957-5872
Organization SubpartNo
Authorized OfficialAhmad HajjPresident · (714) 957-5721
Enumeration DateOctober 16, 2013
Last NPPES UpdateJanuary 20, 2014
✔ NPI 1306274923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in CA · C40971
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
1220 HEMLOCK WAY, Santa Ana, CA 92707
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ahmad Hajj Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20140527000603Non-DME Part B · Clinic/Group PracticeDue dateNovember 30, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Ahmad Hajj MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ahmad Hajj, MD
Orthopedic Surgery
NPI 1043287345
1220 HEMLOCK WAY STE 203
Santa Ana, CA 92707
(714) 957-5721
✔ PECOSSame 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 Ahmad Hajj MD Inc's NPI number?

The NPI number for Ahmad Hajj MD Inc is 1306274923. It was assigned to this organization in the NPPES registry on October 16, 2013.

Where is Ahmad Hajj MD Inc located?

Ahmad Hajj MD Inc is located at 1220 Hemlock Way 203, Santa Ana, CA 92707. The listed phone number is (714) 957-5721.

What is Ahmad Hajj MD Inc's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Ahmad Hajj MD Inc enrolled in Medicare?

Yes. Ahmad Hajj MD Inc is registered in the Medicare PECOS enrollment system.

When is Ahmad Hajj MD Inc's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Ahmad Hajj MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Orthopedic Surgery) reassigns their Medicare billing to Ahmad Hajj 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 Ahmad Hajj MD Inc was last updated on January 20, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.