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EAST BAY CARDIOLOGY INC
NPI 1861766255
Internal Medicine - Cardiovascular Disease in Fremont, CA

Active since March 02, 2012CLIA 05D1036992 · Waiver
39229 LIBERTY STREET, FREMONT, CA 94538(510) 494-8316(510) 494-8314 Get Directions Write a Review

NPPES record last updated: April 22, 2022. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About East Bay Cardiology Inc NPPES

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

EAST BAY CARDIOLOGY INC (NPI 1861766255) is a healthcare organization registered as a cardiovascular disease in Fremont, California and active in the NPI registry since March 2012. The organization holds a CLIA Waiver certificate valid through February 10, 2027 and lists Kwan Sian Chen, Owner, as its authorized official.

NPPES Registry Identity

NPI1861766255
Entity TypeOrganization
Primary Taxonomy207RC0000X
Legal Business NameEAST BAY CARDIOLOGY INC
Location Address39229 LIBERTY STREETFremont, CA 94538-1501
Mailing Address39229 Liberty StFremont, CA 94538-1501 · (510) 494-8316 · Fax (510) 494-8314
Phone(510) 494-8316
Fax(510) 494-8314
Organization SubpartNo
Authorized OfficialKwan Sian ChenOwner · (510) 494-8316
Enumeration DateMarch 2, 2012
Last NPPES UpdateApril 22, 2022
NPPES CertifiedApril 11, 2022
✔ NPI 1861766255 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
39229 LIBERTY STREET, Fremont, CA 94538
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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 and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

East Bay Cardiology 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 East Bay Cardiology Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Kwan-Sian Chen, MD
Cardiovascular Disease (Cardiology)
NPI 1619928025
39229 LIBERTY ST
Fremont, CA 94538
(510) 494-8316
✔ PECOS✔ Accepts Medicare0.1 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 05D1036992

Eastbay Cardiology · Fremont, CA
Active · expires Feb 10, 2027
CLIA Number05D1036992
Laboratory TypePhysician Office
Certificate Effective DateFebruary 11, 2025
Certificate Expiration DateFebruary 10, 2027
Laboratory DirectorKwan Sian Chen
Laboratory Phone(510) 494-8316
Laboratory LocationEastbay Cardiology39231 Liberty Street, Fremont, CA 94538
CLIA data matches this NPI record on: 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 East Bay Cardiology Inc's NPI number?

The NPI number for East Bay Cardiology Inc is 1861766255. It was assigned to this organization in the NPPES registry on March 2, 2012.

Where is East Bay Cardiology Inc located?

East Bay Cardiology Inc is located at 39229 Liberty Street, Fremont, CA 94538. The listed phone number is (510) 494-8316.

What is East Bay Cardiology Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is East Bay Cardiology Inc enrolled in Medicare?

Yes. East Bay Cardiology Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through East Bay Cardiology Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiovascular Disease (Cardiology)) reassigns their Medicare billing to East Bay Cardiology 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 East Bay Cardiology Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D1036992) is associated with this NPI, valid through February 10, 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 East Bay Cardiology Inc was last updated on April 22, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.