Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Jeffrey Weinstein, M.D.

Internal Medicine Physician in Lawrenceville, NJ · enumerated 2005.

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

National Provider Identifier

1376549576

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Jeffrey Weinstein

Credential M.D.

Sex Male

Practice address 3100 Princeton Pike, Lawrenceville, NJ, 08648

Phone (609) 896-1793

Enumeration date Jun 22, 2005

Last updated in NPPES Oct 5, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MA49517 (NJ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
8363901	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 Mark Weinstein?

The National Provider Identifier (NPI) for Mark Weinstein is 1376549576, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Weinstein practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-05.