JAMES ONG M.D.
NPI 1063585214
Specialist in Tarzana, CA

Q: What is Valley Regional Arrhythmia Center Inc's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Active since November 16, 2006CLIA 05D2024583 · Waiver

18372 CLARK ST, SUITE 218, TARZANA, CA 91356(818) 342-5377(818) 996-9378 Get Directions Write a Review

NPPES record last updated: November 18, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About James Ong M.d. NPPES

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

JAMES ONG M.D. (NPI 1063585214) is a healthcare organization registered as a specialist in Tarzana, California and active in the NPI registry since November 2006. The organization holds a CLIA Waiver certificate valid through May 18, 2027 and lists Linda Tseng-dng, Officer, as its authorized official.

NPPES Registry Identity

NPI1063585214

Entity TypeOrganization

Primary Taxonomy174400000X

Legal Business NameVALLEY REGIONAL ARRHYTHMIA CENTER INC

Location Address18372 CLARK ST, SUITE 218Tarzana, CA 91356-3508

Mailing Address18372 Clark St, Suite 218Tarzana, CA 91356-3508 · (818) 342-5377 · Fax (818) 996-9378

Phone(818) 342-5377

Fax(818) 996-9378

Organization SubpartNo

Authorized OfficialLinda Tseng-dngOfficer · (818) 342-5377

Enumeration DateNovember 16, 2006

Last NPPES UpdateNovember 18, 2016

✔ NPI 1063585214 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in CA · G70354

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

18372 CLARK ST, Tarzana, CA 91356

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Other Names 1

Doing Business AsJames Ong M.d.

Other Identifiers 3

Medicare ID-Type UnspecifiedW18121CA

Medicaid00G703540CA

Medicare UPINF11812CA

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James Ong M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 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 IDO20041108001101Non-DME Part B · Clinic/Group PracticeDue dateDecember 31, 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 James Ong M.D., which bills Medicare for the services this clinician delivers.

Clinician (1)

James Ong, M.D.

Cardiac Electrophysiology

NPI 1912955980

18372 CLARK ST SUITE 218
Tarzana, CA 91356

(818) 342-5377

✔ 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 05D2024583

Valley Regional Arrhythmia Center Inc · Tarzana, CA

Active · expires May 18, 2027

CLIA Number05D2024583

Laboratory TypePhysician Office

Certificate Effective DateMay 19, 2025

Certificate Expiration DateMay 18, 2027

Laboratory DirectorJames J. Ong

Laboratory Phone(818) 342-5377

Laboratory LocationValley Regional Arrhythmia Center Inc18372 Clark St Ste 218, Tarzana, CA 91356

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 Valley Regional Arrhythmia Center Inc's NPI number?

The NPI number for Valley Regional Arrhythmia Center Inc is 1063585214. It was assigned to this organization in the NPPES registry on November 16, 2006. The provider is doing business as James Ong M.D..

Where is Valley Regional Arrhythmia Center Inc located?

Valley Regional Arrhythmia Center Inc is located at 18372 Clark St Suite 218, Tarzana, CA 91356. The listed phone number is (818) 342-5377.

What is Valley Regional Arrhythmia Center Inc's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Valley Regional Arrhythmia Center Inc enrolled in Medicare?

Yes. Valley Regional Arrhythmia Center Inc is registered in the Medicare PECOS enrollment system.

When is Valley Regional Arrhythmia Center 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 December 31, 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 Valley Regional Arrhythmia Center Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiac Electrophysiology) reassigns their Medicare billing to Valley Regional Arrhythmia Center 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 Valley Regional Arrhythmia Center Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2024583) is associated with this NPI, valid through May 18, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Valley Regional Arrhythmia Center Inc was last updated on November 18, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.