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THE NEPHROLOGY GROUP PA
NPI 1518934207
Internal Medicine - Nephrology in West Orange, NJ

Active since March 02, 2006
111 NORTH FIELD AVENUE, SUITE 311, WEST ORANGE, NJ 07052(973) 325-2103(973) 325-2254 Get Directions Write a Review

NPPES record last updated: September 28, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About The Nephrology Group Pa NPPES

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

THE NEPHROLOGY GROUP PA (NPI 1518934207) is a healthcare organization registered as a nephrology in West Orange, New Jersey and active in the NPI registry since March 2006. The organization lists Melvin Victor Goldblat, President, as its authorized official.

NPPES Registry Identity

NPI1518934207
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameTHE NEPHROLOGY GROUP PA
Location Address111 NORTH FIELD AVENUE, SUITE 311West Orange, NJ 07052-4703
Mailing Address111 Northfield Avenue, Suite 311West Orange, NJ 07052-4703 · (973) 325-2103 · Fax (973) 325-2254
Phone(973) 325-2103
Fax(973) 325-2254
Organization SubpartNo
Authorized OfficialMelvin Victor GoldblatPresident · (973) 325-2103
Enumeration DateMarch 2, 2006
Last NPPES UpdateSeptember 28, 2023
NPPES CertifiedSeptember 28, 2023
✔ NPI 1518934207 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
111 NORTH FIELD AVENUE, West Orange, NJ 07052
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Other Identifiers 1

Medicaid2650703NJ

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)

The Nephrology Group Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to The Nephrology Group PA, which bills Medicare for the services they deliver. Of these, 6 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Craig Goldstein, DOMD
Nephrology
NPI 1700973203
111 NORTHFIELD AVE SUITE 311
West Orange, NJ 07052
(973) 325-2103
✔ PECOS✔ Accepts Medicare1.4 mi
Kundana Thimmanagari
Nephrology
NPI 1306498167
111 NORTHFIELD AVE
West Orange, NJ 07052
(973) 325-2103
✔ PECOS✔ Accepts Medicare1.4 mi
Mayuri Vijay Sharma, MD
Nephrology
NPI 1326236308
111 NORTHFIELD AVE SUITE 311
West Orange, NJ 07052
(973) 325-2103
✔ PECOS✔ Accepts Medicare1.4 mi
Michael Grasso, MD
Nephrology
NPI 1821063785
111 NORTHFIELD AVENUE SUITE 311
West Orange, NJ 07052
(973) 325-2103
✔ PECOS✔ Accepts Medicare1.4 mi
Heather Lefkowitz, MD
Nephrology
NPI 1659346518
111 NORTHFIELD AVENUE SUITE 311
West Orange, NJ 07052
(973) 325-2103
✔ PECOS✔ Accepts Medicare1.4 mi
John Madigan, D.O.
Nephrology
NPI 1427239854
225 MILLBURN AVE SUITE 209
Millburn, NJ 07041
(973) 926-7000
✔ PECOS✔ Accepts Medicare6.0 mi

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 The Nephrology Group PA's NPI number?

The NPI number for The Nephrology Group PA is 1518934207. It was assigned to this organization in the NPPES registry on March 2, 2006.

Where is The Nephrology Group PA located?

The Nephrology Group PA is located at 111 North Field Avenue Suite 311, West Orange, NJ 07052. The listed phone number is (973) 325-2103.

What is The Nephrology Group PA's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is The Nephrology Group PA enrolled in Medicare?

Yes. The Nephrology Group PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through The Nephrology Group PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians, all in Nephrology, reassign their Medicare billing to The Nephrology Group PA. 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. Of these, 6 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for The Nephrology Group PA was last updated on September 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.