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SAN MATEO MEDICAL CLINIC, INC
NPI 1881795003
General Practice in Los Angeles, CA

Active since September 26, 2006CLIA 05D0871064 · Waiver
4055 WHITTIER BLVD, LOS ANGELES, CA 90023(323) 780-4000(323) 780-9893 Get Directions Write a Review

NPPES record last updated: November 19, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About San Mateo Medical Clinic, Inc NPPES

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

SAN MATEO MEDICAL CLINIC, INC (NPI 1881795003) is a healthcare organization registered as a general practice in Los Angeles, California and active in the NPI registry since September 2006. The organization holds a CLIA Waiver certificate valid through August 31, 2028 and lists Masad Arbid, Owner, as its authorized official.

NPPES Registry Identity

NPI1881795003
Entity TypeOrganization
Primary Taxonomy208D00000X
Legal Business NameSAN MATEO MEDICAL CLINIC, INC
Location Address4055 WHITTIER BLVDLos Angeles, CA 90023-2536
Mailing AddressPo Box 5025Glendale, CA 91221-1025 · (323) 780-4000 · Fax (323) 780-9893
Phone(323) 780-4000
Fax(323) 780-9893
Organization SubpartNo
Authorized OfficialMasad ArbidOwner · (323) 780-4000
Enumeration DateSeptember 26, 2006
Last NPPES UpdateNovember 19, 2008
✔ NPI 1881795003 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in CA · A35390
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
4055 WHITTIER BLVD, Los Angeles, CA 90023
Open in Google Maps ↗

Other Identifiers 4

OtherA35390CA · Provider License Number
Medicare PINW12223CA
MedicaidGR0082610CA
Medicare UPINA88336CA

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)

San Mateo Medical Clinic, 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 San Mateo Medical Clinic, Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Masad Arbid, M.D.
General Practice
NPI 1043366305
4055 WHITTIER BLVD
Los Angeles, CA 90023
(323) 780-4000
✔ 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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0871064

San Mateo Medical Clinic · Los Angeles, CA
Active · expires Aug 31, 2028
CLIA Number05D0871064
Laboratory TypePractitioner Other
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorMasad I. Arbid
Laboratory Phone(323) 780-4000
Laboratory LocationSan Mateo Medical Clinic4055 Whittier Blvd, Los Angeles, CA 90023
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 San Mateo Medical Clinic, Inc's NPI number?

The NPI number for San Mateo Medical Clinic, Inc is 1881795003. It was assigned to this organization in the NPPES registry on September 26, 2006.

Where is San Mateo Medical Clinic, Inc located?

San Mateo Medical Clinic, Inc is located at 4055 Whittier Blvd, Los Angeles, CA 90023. The listed phone number is (323) 780-4000.

What is San Mateo Medical Clinic, Inc's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is San Mateo Medical Clinic, Inc enrolled in Medicare?

Yes. San Mateo Medical Clinic, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through San Mateo Medical Clinic, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (General Practice) reassigns their Medicare billing to San Mateo Medical Clinic, 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.

Does San Mateo Medical Clinic, Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0871064) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for San Mateo Medical Clinic, Inc was last updated on November 19, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.