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WILLIAM I FRUMKIN MD PLLC
NPI 1215134804
Internal Medicine - Clinical Cardiac Electrophysiology in New York, NY

Active since June 28, 2007CLIA 33D1047726 · Waiver
184 E 70TH ST, SUITE B2, NEW YORK, NY 10021(212) 535-1550(212) 535-5012 Get Directions Write a Review

NPPES record last updated: September 28, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William I Frumkin Md Pllc NPPES

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

WILLIAM I FRUMKIN MD PLLC (NPI 1215134804) is a healthcare organization registered as a clinical cardiac electrophysiology in New York, New York and active in the NPI registry since June 2007. The organization holds a CLIA Waiver certificate valid through November 13, 2027 and lists William I Frumkin, Owner, as its authorized official.

NPPES Registry Identity

NPI1215134804
Entity TypeOrganization
Primary Taxonomy207RC0001X
Legal Business NameWILLIAM I FRUMKIN MD PLLC
Location Address184 E 70TH ST, SUITE B2New York, NY 10021-5154
Mailing Address184 E 70th St, Suite B2New York, NY 10021-5154 · (212) 535-1550 · Fax (212) 535-5012
Phone(212) 535-1550
Fax(212) 535-5012
Organization SubpartNo
Authorized OfficialWilliam I FrumkinOwner · (212) 535-1550
Enumeration DateJune 28, 2007
Last NPPES UpdateSeptember 28, 2007
✔ NPI 1215134804 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ 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.
184 E 70TH ST, New York, NY 10021
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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)

William I Frumkin Md Pllc 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 William I Frumkin MD PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

William Frumkin, M.D.
Cardiovascular Disease (Cardiology)
NPI 1598789018
184 E 70TH ST SUITE B2
New York, NY 10021
(212) 535-1550
✔ 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 33D1047726

William I Frumkin MD PLLC · New York, NY
Active · expires Nov 13, 2027
CLIA Number33D1047726
Laboratory TypePhysician Office
Certificate Effective DateNovember 14, 2025
Certificate Expiration DateNovember 13, 2027
Laboratory DirectorWilliam I. Frumkin
Laboratory Phone(212) 535-1550
Laboratory LocationWilliam I Frumkin MD PLLC184 East 70th Street, Suite B2, New York, NY 10021
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 William I Frumkin MD PLLC's NPI number?

The NPI number for William I Frumkin MD PLLC is 1215134804. It was assigned to this organization in the NPPES registry on June 28, 2007.

Where is William I Frumkin MD PLLC located?

William I Frumkin MD PLLC is located at 184 E 70th St Suite B2, New York, NY 10021. The listed phone number is (212) 535-1550.

What is William I Frumkin MD PLLC's specialty?

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

Is William I Frumkin MD PLLC enrolled in Medicare?

Yes. William I Frumkin MD PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William I Frumkin MD PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiovascular Disease (Cardiology)) reassigns their Medicare billing to William I Frumkin MD PLLC. 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 William I Frumkin MD PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D1047726) is associated with this NPI, valid through November 13, 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 William I Frumkin MD PLLC was last updated on September 28, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.