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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SOUTH ORANGE COUNTY CARDIOLOGY GROUP
NPI 1811070253
Internal Medicine - Clinical Cardiac Electrophysiology in Laguna Hills, CA

Active since October 21, 2006
24012 CALLE DE LA PLATA STE 450, LAGUNA HILLS, CA 92653(949) 770-6252(949) 770-1124 Get Directions Write a Review

NPPES record last updated: September 25, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 25, 2026, Aug 24, 2026, Jun 11, 2020 (3 updates tracked since 2020).

About South Orange County Cardiology Group NPPES

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

SOUTH ORANGE COUNTY CARDIOLOGY GROUP (NPI 1811070253) is a healthcare organization registered as a clinical cardiac electrophysiology in Laguna Hills, California and active in the NPI registry since October 2006. The organization lists Tara Ziaeian, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1811070253
Entity TypeOrganization
Primary Taxonomy207RC0001X
Legal Business NameSOUTH ORANGE COUNTY CARDIOLOGY GROUP
Location Address24012 CALLE DE LA PLATA STE 450Laguna Hills, CA 92653-7625
Mailing Address24012 Calle De La Plata Ste 450Laguna Hills, CA 92653-7625 · (949) 770-6252 · Fax (949) 770-1124
Phone(949) 770-6252
Fax(949) 770-1124
Organization SubpartNo
Authorized OfficialTara ZiaeianOffice Manager · (949) 770-6252
Enumeration DateOctober 21, 2006
Last NPPES UpdateSeptember 25, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 25, 2026
✔ NPI 1811070253 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians
Taxonomy Code207RC0001X
Definition
A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X
Also ListedInternal Medicine · Interventional CardiologyTaxonomy 207RI0011X
24012 CALLE DE LA PLATA STE 450, Laguna Hills, CA 92653
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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)

South Orange County Cardiology Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

10

Medicare enrollment records show 10 clinicians reassign Medicare billing to South Orange County Cardiology Group, which bills Medicare for the services they deliver. Of these, 10 practice at this address. They are listed nearest first.

Clinicians by Medicare Specialty 4

Cardiovascular Disease (Cardiology)6
Interventional Cardiology2
Cardiac Electrophysiology1
Internal Medicine1

Clinicians, nearest first (10)

John Bahadorani, M.D.
Interventional Cardiology
NPI 1780883082
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Paul Drury, M.D.
Internal Medicine
NPI 1912199704
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Jeffrey Feiner, M.D.
Cardiovascular Disease (Cardiology)
NPI 1962594309
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Michael Gault, M.D.
Cardiovascular Disease (Cardiology)
NPI 1598857930
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Ronald Gim, M.D.
Cardiovascular Disease (Cardiology)
NPI 1316039753
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Daniel Lamont, M.D.
Cardiovascular Disease (Cardiology)
NPI 1407948847
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Robert Masters, M.D.
Cardiovascular Disease (Cardiology)
NPI 1871685214
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Ryland Melford, MD
Cardiovascular Disease (Cardiology)
NPI 1598874869
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Ashish Shah, D.O.
Cardiac Electrophysiology
NPI 1831326479
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ PECOS✔ Accepts MedicareSame address
Daniel Walters, MD
Interventional Cardiology
NPI 1659665461
24012 CALLE DE LA PLATA STE 450
Laguna Hills, CA 92653
(949) 770-6252
✔ 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.

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 South Orange County Cardiology Group's NPI number?

The NPI number for South Orange County Cardiology Group is 1811070253. It was assigned to this organization in the NPPES registry on October 21, 2006.

Where is South Orange County Cardiology Group located?

South Orange County Cardiology Group is located at 24012 Calle De La Plata Ste 450, Laguna Hills, CA 92653. The listed phone number is (949) 770-6252.

What is South Orange County Cardiology Group's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is South Orange County Cardiology Group enrolled in Medicare?

Yes. South Orange County Cardiology Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through South Orange County Cardiology Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 4 Medicare specialties reassign their Medicare billing to South Orange County Cardiology Group. 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) (6), Interventional Cardiology (2) and Cardiac Electrophysiology (1). Of these, 10 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for South Orange County Cardiology Group was last updated on September 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.