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MS. KATHERINE HAMMER CSW
NPI 1972750693
Counselor - Mental Health in Brooklyn, NY

Active since August 25, 2008
300 FLATBUSH AVE, BROOKLYN, NY 11217(718) 622-2000(718) 298-3328 Get Directions Write a Review

NPPES record last updated: August 25, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Ms. Katherine Hammer Csw NPPES

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

MS. KATHERINE HAMMER CSW (NPI 1972750693) is an individual mental health provider in Brooklyn, New York, licensed in New York (073428-1) and active in the NPI registry since August 2008.

NPPES Registry Identity

NPI1972750693
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMS. KATHERINE HAMMERCredential: CSW
Location Address300 FLATBUSH AVEBrooklyn, NY 11217-2812
Mailing Address300 Flatbush AveBrooklyn, NY 11217-2812
Phone(718) 622-2000
Fax(718) 298-3328
Sole ProprietorYes
Enumeration DateAugust 25, 2008
✔ NPI 1972750693 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in NY · 073428-1
300 FLATBUSH AVE, Brooklyn, NY 11217
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Other Providers at the Same Location NPPES 20

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

MS. VALERIA VILLARAN M.A.
Counselor (Mental Health)
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000
LISSA FAYE PEARLMAN MSW
Community/Behavioral Health
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000
SHERRY FINE LMSW
Social Worker (Clinical)
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000
MS. NATHALEE HOLLINSHEAD LCSW
Counselor (Mental Health)
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000
JEANINE COSTLEY LCSQ
Social Worker (Clinical)
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000
MISS ISABEL M VILLEGAS LCSW
Social Worker (Clinical)
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000
EVELYN MARITZA ZAMBRANA LMSW
Social Worker
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000
LAUREN KRANSON
Social Worker (Clinical)
300 FLATBUSH AVE
BROOKLYN, NY 11217
Kings County (718) 622-2000

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 Katherine Hammer's NPI number?

The NPI number for Katherine Hammer is 1972750693. It was assigned to this individual provider in the NPPES registry on August 25, 2008.

Where is Katherine Hammer located?

Katherine Hammer practices at 300 Flatbush Ave, Brooklyn, NY 11217. The listed phone number is (718) 622-2000.

What is Katherine Hammer's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Katherine Hammer was last updated on August 25, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years 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.