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

Dr. Lawrence Jerome Hammer, DMD

Dentist in West Orange, NJ · enumerated 2008.

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

National Provider Identifier

1225203219

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Registry record

Entity type Individual (Type 1)

Name Dr. Lawrence Jerome Hammer

Credential DMD

Sex Male

Practice address West Orange, NJ, 07052

Phone (973) 731-9886

Fax (973) 731-0407

Enumeration date Apr 29, 2008

Last updated in NPPES Apr 29, 2008

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 22D101045900 (NJ) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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

Where does Lawrence Hammer practice?

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

What is the NPI number for Lawrence Hammer?

The National Provider Identifier (NPI) for Lawrence Hammer is 1225203219, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-29.