Barbara Markowitz, LCSW
NPI 1255452504 · Clinical Social Worker · Merrick, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Barbara Markowitz, LCSW is a Clinical Social Worker provider in Merrick, NY (NPI 1255452504).
Provider details
- NPI number
- 1255452504
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- R019597 (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
19 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
- 2007-04-03
- Last updated
- 2012-08-22
Frequently asked questions
- What is Barbara Markowitz's NPI number?
- Barbara Markowitz's National Provider Identifier (NPI) is 1255452504, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barbara Markowitz's specialty?
- Barbara Markowitz is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Barbara Markowitz located?
- Barbara Markowitz's practice location on file with NPPES is 124 Merrick Ave, Merrick, NY 11566-3434.
- What is Barbara Markowitz's phone number?
- The practice phone number listed in the NPPES registry for Barbara Markowitz is (516) 377-4054.
- Does Barbara Markowitz accept Medicare?
- Barbara Markowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Barbara Markowitz's NPI active?
- Yes — Barbara Markowitz's NPI (1255452504) is active in the NPPES registry as of the last update on 2012-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.