Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joan Toshimi Weinstein, PA-C

Physician Assistant in Millburn, NJ · enumerated 2007.

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

National Provider Identifier

1659597854

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Registry record

Entity type Individual (Type 1)

Name Joan Toshimi Weinstein

Credential PA-C

Sex Female

Practice address 225 Millburn Ave, Suite 204, Millburn, NJ, 07041

Phone (973) 218-1990

Fax (973) 218-1993

Enumeration date Apr 17, 2007

Last updated in NPPES Nov 10, 2008

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 25MP00178800 (NJ) Primary

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.

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Frequently asked questions

What specialty is Joan Weinstein?

Joan Weinstein is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-10.