Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Marc J Holzman

Q: What type of organization is Marc J Holzman?

Marc J Holzman is registered in NPPES as a Exclusive Provider Organization (its primary provider taxonomy).

Exclusive Provider Organization in Washington, DC · enumerated 2012 · authorized official Marc Holzman, Physician.

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

National Provider Identifier

1063785541

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Registry record

Entity type Organization (Type 2)

Legal business name Marc J Holzman

Practice address 2021 K St Nw, Suite 416, Washington, DC, 20006

Phone (202) 296-1333

Fax (202) 296-9357

Enumeration date Feb 15, 2012

Last updated in NPPES Feb 15, 2012

Taxonomy & classification

302F00000X Exclusive Provider Organization Managed Care Organizations · License MD14106 (DC) Primary

Authorized official

Name Marc Holzman

Title Physician

Phone (202) 296-1333

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 type of organization is Marc J Holzman?

Marc J Holzman is registered in NPPES as a Exclusive Provider Organization (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-15.