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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DIANA GUZMAN
NPI 1427919166
Social Worker in Oyster Bay, NY

Active since November 21, 2025
16 HIGHMEADOW LN, OYSTER BAY, NY 11771(516) 670-6377 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 16, 2026, Nov 21, 2025 (2 updates tracked since 2025).

About Diana Guzman NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIANA GUZMAN (NPI 1427919166) is an individual social worker in Oyster Bay, New York, licensed in New York (129610-01) and active in the NPI registry since November 2025.

NPPES Registry Identity

NPI1427919166
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameDIANA GUZMAN
Location Address16 HIGHMEADOW LNOyster Bay, NY 11771-4001
Mailing Address16 Highmeadow LnOyster Bay, NY 11771-4001 · (516) 670-6377
Phone(516) 670-6377
Sole ProprietorYes
Enumeration DateNovember 21, 2025
Last NPPES UpdateJuly 16, 20262 updates tracked since enumeration
NPPES CertifiedJuly 16, 2026
✔ NPI 1427919166 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in NY · 129610-01
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
16 HIGHMEADOW LN, Oyster Bay, NY 11771
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diana Guzman's NPI number?

The NPI number for Diana Guzman is 1427919166. It was assigned to this individual provider in the NPPES registry on November 21, 2025.

Where is Diana Guzman located?

Diana Guzman practices at 16 Highmeadow Ln, Oyster Bay, NY 11771. The listed phone number is (516) 670-6377.

What is Diana Guzman's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Diana Guzman was last updated on July 16, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.