NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Medical Associates of Westfield PA

Internal Medicine Physician in Westfield, NJ · enumerated 2007 · authorized official Peter Weigel, Physician.

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

National Provider Identifier

1528108768

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Medical Associates of Westfield PA
Practice address 324 South Ave E, Westfield, NJ, 07090
Fax (908) 654-0226
Enumeration date Feb 7, 2007
Last updated in NPPES Oct 4, 2011

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25MA05100000 (NJ) Primary
207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 25MA04895200 (NJ) Secondary

Authorized official

Name Peter Weigel
Title Physician

Other identifiers

Identifier Type State Issuer
5227604 Medicaid NJ -
5227607 Medicaid NJ -

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 Medical Associates of Westfield PA?
The NPI for Medical Associates of Westfield PA is 1528108768, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Medical Associates of Westfield PA?
NPPES lists Peter Weigel (Physician) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-04.