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

Danielle M Sullivan-Mummery, LCSW

School Social Worker in New Windsor, NY · enumerated 2011.

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

National Provider Identifier

1336423466

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Registry record

Entity type Individual (Type 1)

Name Danielle M Sullivan-Mummery

Credential LCSW

Sex Female

Practice address New Windsor, NY, 12553

Phone (845) 561-0444

Enumeration date Oct 7, 2011

Last updated in NPPES Oct 7, 2011

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 073221 (NY) Secondary

1041S0200X School Social Worker Behavioral Health & Social Service Providers · License 1073323 (NY) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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

How do I verify Danielle Sullivan-Mummery's NPI record?

Cross-check NPI 1336423466 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1336423466 active?

Yes, as of the latest NPPES snapshot, NPI 1336423466 is active (record last updated 2011-10-07).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-07.