Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen Kwasniewski, PA

Physician Assistant in Hamilton, NJ · enumerated 2006.

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

National Provider Identifier

1639265408

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Stephen Kwasniewski

Credential PA

Sex Male

Practice address 2501 Kuser Rd Ste 3, Hamilton, NJ, 08691

Phone (609) 896-0444

Fax (609) 896-1126

Enumeration date Oct 5, 2006

Last updated in NPPES Nov 24, 2023

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 25MP00107800 (NJ) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

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

What is the NPI number for Stephen Kwasniewski?

The National Provider Identifier (NPI) for Stephen Kwasniewski is 1639265408, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Kwasniewski practice?

The practice location on file with NPPES is in Hamilton, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Thomas Bills Orthopaedic Surgery Physician · Hamilton, NJ NPI 1932105947 David Eingorn Specialist · Hamilton, NJ NPI 1821094723 John Nolan Specialist · Hamilton, NJ NPI 1417953258 Fredric Kleinbart Orthopaedic Surgery Physician · Hamilton, NJ NPI 1396714747 Frank Colarusso Sports Medicine (Physical Medicine & Rehabilitation) Physician · Hamilton, NJ NPI 1558314047 Mercer Bucks Orthopaedics P.C. Specialist · Hamilton, NJ NPI 1801843511 Nicole Hunter Occupational Therapist · Hamilton, NJ NPI 1801812797 Matthew Mclean Orthopaedic Surgery Physician · Hamilton, NJ NPI 1669571758

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-24.