Katherine Hammer, CSW
NPI 1972750693 · Mental Health Counselor · Brooklyn, NY
Katherine Hammer, CSW is a Mental Health Counselor provider in Brooklyn, NY (NPI 1972750693).
Provider details
- NPI number
- 1972750693
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- CSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 073428-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs 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
Mailing address
Registry dates
- Enumerated
- 2008-08-25
- Last updated
- 2008-08-25
Frequently asked questions
- What is Katherine Hammer's NPI number?
- Katherine Hammer's National Provider Identifier (NPI) is 1972750693, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Hammer's specialty?
- Katherine Hammer is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Katherine Hammer located?
- Katherine Hammer's practice location on file with NPPES is 300 Flatbush Ave, Brooklyn, NY 11217-2812.
- What is Katherine Hammer's phone number?
- The practice phone number listed in the NPPES registry for Katherine Hammer is (718) 622-2000.
- Is Katherine Hammer's NPI active?
- Yes — Katherine Hammer's NPI (1972750693) is active in the NPPES registry as of the last update on 2008-08-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.