What is Lillian Kassin's NPI number?

Lillian Kassin's National Provider Identifier (NPI) is 1538023569, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Lillian Kassin's specialty?

Lillian Kassin is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Lillian Kassin located?

Lillian Kassin's practice location on file with NPPES is 450 Clarkson Ave, Brooklyn, NY 11203-2012.

What is Lillian Kassin's phone number?

The practice phone number listed in the NPPES registry for Lillian Kassin is (718) 270-1000.

Is Lillian Kassin's NPI active?

Yes — Lillian Kassin's NPI (1538023569) is active in the NPPES registry as of the last update on 2025-12-13.

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Lillian Kassin, PA-C

NPI 1538023569 · Physician Assistant · Brooklyn, NY

Lillian Kassin, PA-C is a Physician Assistant provider in Brooklyn, NY (NPI 1538023569).

Provider details

NPI number: 1538023569
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA-C
Sex: Female
Sole proprietor: Yes

Specialties & taxonomies

Physician AssistantPrimary363A00000X
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Basic profile(47/100 index)

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

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
83% 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

450 Clarkson Ave

Brooklyn, NY 11203-2012

Phone: (718) 270-1000

Street-level locationGet directions

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Mailing address