Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Leonard J. Grossman. MD

Exclusive Provider Organization in Ledgewood, NJ · enumerated 2008 · authorized official Leonard Grossman, Medical Doctor.

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

National Provider Identifier

1558537233

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Registry record

Entity type Organization (Type 2)

Legal business name Leonard J. Grossman. MD

Other name <Unavail>

Practice address 1911 Route 46, Ledgewood, NJ, 07852

Phone (973) 347-8500

Fax (973) 347-7320

Enumeration date May 2, 2008

Last updated in NPPES Jun 19, 2008

Taxonomy & classification

302F00000X Exclusive Provider Organization Managed Care Organizations · License 25MA02924700 (NJ) Primary

Authorized official

Name Leonard Grossman

Title Medical Doctor

Phone (973) 347-8500

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-06-19. Verify at npiregistry.cms.hhs.gov.

Where is Leonard J. Grossman. MD located?

The practice location on file with NPPES is in Ledgewood, NJ.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-19.