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CALIFORNIA HEART ASSOCIATES
NPI 1659420495
Specialist in Fountain Valley, CA

Active since January 10, 2007CLIA 05D0971215 · Waiver
18111 BROOKHURST ST, SUITE 5100, FOUNTAIN VALLEY, CA 92708(714) 546-2238(714) 434-8145 Get Directions Write a Review

NPPES record last updated: June 11, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About California Heart Associates NPPES

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

CALIFORNIA HEART ASSOCIATES (NPI 1659420495) is a healthcare organization registered as a specialist in Fountain Valley, California and active in the NPI registry since January 2007. The organization holds a CLIA Waiver certificate valid through March 6, 2028 and lists Grace Huynh, Adminstrator, as its authorized official.

NPPES Registry Identity

NPI1659420495
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameCALIFORNIA HEART ASSOCIATES
Location Address18111 BROOKHURST ST, SUITE 5100Fountain Valley, CA 92708
Mailing Address18111 Brookhurst St, Suite 5100Fountain Valley, CA 92708-6728 · (714) 546-2238 · Fax (714) 434-8145
Phone(714) 546-2238
Fax(714) 434-8145
Organization SubpartNo
Authorized OfficialGrace HuynhAdminstrator · (714) 546-2238
Enumeration DateJanuary 10, 2007
Last NPPES UpdateJune 11, 2018
✔ NPI 1659420495 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
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.
18111 BROOKHURST ST, Fountain Valley, CA 92708
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Other Identifiers 1

MedicaidYYY49298YCA

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)

California Heart Associates is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

14

Medicare enrollment records show 14 clinicians reassign Medicare billing to California Heart Associates, which bills Medicare for the services they deliver. Of these, 12 practice at this address and 14 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 4

Cardiovascular Disease (Cardiology)9
Cardiac Electrophysiology3
Hospitalist1
Nurse Practitioner1

Clinicians, nearest first (14)

Christopher Berg, M.D.
Cardiovascular Disease (Cardiology)
NPI 1598296147
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Lu Chen, MD
Cardiac Electrophysiology
NPI 1679935050
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Nicolas Doan Van, MD, F.A.C.C. INC.
Cardiovascular Disease (Cardiology)
NPI 1801922521
18111 BROOKHURST ST SUITE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Sarah Elsayed, M.D.
Cardiovascular Disease (Cardiology)
NPI 1396049029
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Hoang Nguyen, M.D.
Cardiovascular Disease (Cardiology)
NPI 1811164528
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Yu-Ming Ni, MD
Hospitalist
NPI 1033565338
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Arvind Nirula, M.D.
Cardiovascular Disease (Cardiology)
NPI 1437285095
18111 BROOKHURST ST # 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Sanjiv Patel, M.D.
Cardiovascular Disease (Cardiology)
NPI 1982801718
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Jessica Schachter, D.O.
Cardiovascular Disease (Cardiology)
NPI 1235664434
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Nikhil Warrier, M.D.
Cardiac Electrophysiology
NPI 1538486675
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Kerry Wood, NP
Nurse Practitioner
NPI 1033760772
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Tae Yang, M.D.
Cardiovascular Disease (Cardiology)
NPI 1821262072
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts MedicareSame address
Jennifer Wong, M.D.
Cardiovascular Disease (Cardiology)
NPI 1013029065
18111 BROOKHURST ST STE 5100
Fountain Valley, CA 92708
(714) 546-2238
✔ PECOS✔ Accepts Medicare0.1 mi
Stacey Howell
Cardiac Electrophysiology
NPI 1609290774
101 THE CITY DR S
Orange, CA 92868
(714) 456-8888
✔ PECOS✔ Accepts Medicare7.1 mi

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 05D0971215

California Heart Associates · Fountain Valley, CA
Active · expires Mar 6, 2028
CLIA Number05D0971215
Laboratory TypePractitioner Other
Certificate Effective DateMarch 7, 2026
Certificate Expiration DateMarch 6, 2028
Laboratory DirectorSteven M. Schiff
Laboratory Phone(714) 546-2238
Laboratory LocationCalifornia Heart Associates18111 Brookhurst St Ste 5100, Fountain Valley, CA 92708
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 California Heart Associates's NPI number?

The NPI number for California Heart Associates is 1659420495. It was assigned to this organization in the NPPES registry on January 10, 2007.

Where is California Heart Associates located?

California Heart Associates is located at 18111 Brookhurst St Suite 5100, Fountain Valley, CA 92708. The listed phone number is (714) 546-2238.

What is California Heart Associates's specialty?

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

Is California Heart Associates enrolled in Medicare?

Yes. California Heart Associates is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through California Heart Associates?

According to the CMS Revalidation Reassignment List (October 2026 release), 14 clinicians in 4 Medicare specialties reassign their Medicare billing to California Heart Associates. 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. The largest specialties are Cardiovascular Disease (Cardiology) (9), Cardiac Electrophysiology (3) and Hospitalist (1). Of these, 12 practice at this address and 14 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does California Heart Associates hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0971215) is associated with this NPI, valid through March 6, 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 California Heart Associates was last updated on June 11, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.