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

Donald Zuckerman, MSW

Clinical Social Worker in Washington, DC · enumerated 2005.

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

National Provider Identifier

1164420535

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Registry record

Entity type Individual (Type 1)

Name Donald Zuckerman

Credential MSW

Sex Male

Practice address Washington, DC, 20008

Phone (202) 483-2660

Fax (202) 882-6868

Enumeration date Jul 11, 2005

Last updated in NPPES May 5, 2017

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LC302973 (DC) Primary

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

Is NPI 1164420535 active?

Yes, as of the latest NPPES snapshot, NPI 1164420535 is active (record last updated 2017-05-05).

How do I verify Donald Zuckerman's NPI record?

Cross-check NPI 1164420535 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-05.