Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Medicine & Nephrology Associates of Northwest Jersey, P.C.

Medical Specialty Clinic/Center in Hackettstown, NJ · enumerated 2007 · authorized official Krystine Swannick-Konopczynski, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1154511509

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Registry record

Entity type Organization (Type 2)

Legal business name Medicine & Nephrology Associates of Northwest Jersey, P.C.

Practice address 184 Mountain Ave, Hackettstown, NJ, 07840

Phone (908) 684-4244

Fax (908) 684-4344

Enumeration date Jul 31, 2007

Last updated in NPPES Jul 31, 2007

Taxonomy & classification

261QM2500X Medical Specialty Clinic/Center Ambulatory Health Care Facilities · License MA07293000 (NJ) Primary

Authorized official

Name Krystine Swannick-Konopczynski

Title President

Phone (908) 812-0815

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-07-31. Verify at npiregistry.cms.hhs.gov.

Where is Medicine & Nephrology Associates of Northwest Jersey, P.C. located?

The practice location on file with NPPES is in Hackettstown, NJ.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-31.