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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MARIELLA WILLIAMS LMSW
NPI 1609782341
Social Worker in New York, NY

Active since August 21, 2026
115 E 82ND ST, NEW YORK, NY 10028(646) 828-6230 Get Directions Write a Review

NPPES record added: August 21, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Mariella Williams Lmsw NPPES

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

MARIELLA WILLIAMS LMSW (NPI 1609782341) is an individual social worker in New York, New York, licensed in New York (133291) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1609782341
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameMARIELLA WILLIAMSCredential: LMSW
Location Address115 E 82ND STNew York, NY 10028-0831
Mailing Address44 E 67th St Apt 3cNew York, NY 10065-6134 · (201) 220-9928
Phone(646) 828-6230
Sole ProprietorNo
Enumeration DateAugust 21, 2026
NPPES CertifiedAugust 21, 2026
✔ NPI 1609782341 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 · 133291
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.
115 E 82ND ST, New York, NY 10028
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Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EASTWEST PSYCHOLOGY, PLLC
Psychologist (Clinical)
115 E 82ND ST, SUITE 1A
NEW YORK, NY 10028
New York County (212) 579-7666
NICKJAX,LLC
Rehabilitation Practitioner
115 E 82ND ST, SUITE 1B
NEW YORK, NY 10028
New York County (212) 738-9264
ALICE HUNNICUTT ENTIN MSW
Social Worker (Clinical)
115 E 82ND ST, 1A
NEW YORK, NY 10028
New York County (212) 327-2530
NICKJAX LLC
Program of All-Inclusive Care for the Elderly (PACE) Provider Organization
115 E 82ND ST, 1B
NEW YORK, NY 10028
New York County (212) 738-9264

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 Mariella Williams's NPI number?

The NPI number for Mariella Williams is 1609782341. It was assigned to this individual provider in the NPPES registry on August 21, 2026.

Where is Mariella Williams located?

Mariella Williams practices at 115 E 82nd St, New York, NY 10028. The listed phone number is (646) 828-6230.

What is Mariella Williams'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 Mariella Williams was last updated on August 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.