What is Sydney Ellison's NPI number?

Sydney Ellison's National Provider Identifier (NPI) is 1861374837, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sydney Ellison's specialty?

Sydney Ellison is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).

Where is Sydney Ellison located?

Sydney Ellison's practice location on file with NPPES is 483 Clermont Ave Fl 3, Brooklyn, NY 11238-2253.

What is Sydney Ellison's phone number?

The practice phone number listed in the NPPES registry for Sydney Ellison is (718) 643-5300.

Is Sydney Ellison's NPI active?

Yes — Sydney Ellison's NPI (1861374837) is active in the NPPES registry as of the last update on 2025-07-22.

IndividualActive

Sydney Ellison, LMSW

NPI 1861374837 · Social Worker · Brooklyn, NY

Sydney Ellison, LMSW is a Social Worker provider in Brooklyn, NY (NPI 1861374837).

Provider details

NPI number: 1861374837
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: LMSW
Sex: Female
Sole proprietor: No
License: 127816 (NY)

Specialties & taxonomies

Social WorkerPrimary104100000XLicense 127816 (NY)
Behavioral Health & Social Service Providers

Profile Score

Established profile(55/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
1 yr in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

483 Clermont Ave Fl 3

Brooklyn, NY 11238-2253

Phone: (718) 643-5300

Street-level locationGet directions

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Mailing address