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ASSOCIATES IN INTERNAL MEDICINE & NEPHROLOGY, P.C.
NPI 1992716013
Internal Medicine in Millburn, NJ

Active since August 11, 2006
225 MILLBURN AVE, SUITE 209, MILLBURN, NJ 07041(973) 218-9330(973) 218-9351 Get Directions Write a Review

NPPES record last updated: March 1, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Associates In Internal Medicine & Nephrology, P.c. NPPES

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

ASSOCIATES IN INTERNAL MEDICINE & NEPHROLOGY, P.C. (NPI 1992716013) is a healthcare organization registered as an internal medicine in Millburn, New Jersey and active in the NPI registry since August 2006. The organization lists Nancy Freundlich, Physician/vice-president, as its authorized official.

NPPES Registry Identity

NPI1992716013
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameASSOCIATES IN INTERNAL MEDICINE & NEPHROLOGY, P.C.
Location Address225 MILLBURN AVE, SUITE 209Millburn, NJ 07041-1737
Mailing Address225 Millburn Ave, Suite 209Millburn, NJ 07041-1737 · (973) 218-9330 · Fax (973) 218-9351
Phone(973) 218-9330
Fax(973) 218-9351
Organization SubpartNo
Authorized OfficialNancy FreundlichPhysician/vice-president · (973) 218-9330
Enumeration DateAugust 11, 2006
Last NPPES UpdateMarch 1, 2016
✔ NPI 1992716013 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X
225 MILLBURN AVE, Millburn, NJ 07041
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Other Identifiers 1

Medicare PIN077123NJ

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)

Associates In Internal Medicine & Nephrology, P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Associates In Internal Medicine & Nephrology, P.C., which bills Medicare for the services they deliver. Of these, 3 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Nancy Freundlich, M.D.
Internal Medicine
NPI 1992716021
225 MILLBURN AVE SUITE 209
Millburn, NJ 07041
(973) 218-9330
✔ PECOS✔ Accepts MedicareSame address
Richard Freundlich, M.D.
Nephrology
NPI 1265443238
225 MILLBURN AVE SUITE 209
Millburn, NJ 07041
(973) 218-9330
✔ PECOS✔ Accepts MedicareSame address
John Madigan, D.O.
Nephrology
NPI 1427239854
225 MILLBURN AVE SUITE 209
Millburn, NJ 07041
(973) 926-7000
✔ 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 Associates In Internal Medicine & Nephrology, P.C.'s NPI number?

The NPI number for Associates In Internal Medicine & Nephrology, P.C. is 1992716013. It was assigned to this organization in the NPPES registry on August 11, 2006.

Where is Associates In Internal Medicine & Nephrology, P.C. located?

Associates In Internal Medicine & Nephrology, P.C. is located at 225 Millburn Ave Suite 209, Millburn, NJ 07041. The listed phone number is (973) 218-9330.

What is Associates In Internal Medicine & Nephrology, P.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Associates In Internal Medicine & Nephrology, P.C. enrolled in Medicare?

Yes. Associates In Internal Medicine & Nephrology, P.C. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Associates In Internal Medicine & Nephrology, P.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Associates In Internal Medicine & Nephrology, P.C., in Internal Medicine and Nephrology. 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, 3 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 Associates In Internal Medicine & Nephrology, P.C. was last updated on March 1, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.