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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Louis Tsarouhas, MD

Family Medicine Physician in Lawrenceville, NJ · enumerated 2005.

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

National Provider Identifier

1417945825

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Registry record

Entity type Individual (Type 1)
Name Louis Tsarouhas
Credential MD
Sex Male
Practice address Lawrenceville, NJ, 08648
Phone (609) 882-9333
Fax (609) 882-1026
Enumeration date Oct 10, 2005
Last updated in NPPES Feb 2, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MA51969 (NJ) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

Where does Louis Tsarouhas practice?
The practice location on file with NPPES is in Lawrenceville, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Louis Tsarouhas?
The National Provider Identifier (NPI) for Louis Tsarouhas is 1417945825, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-02.