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Marguerite Harder, LCSW R
NPI 1144367855 · Clinical Social Worker · Hollis, NY
Marguerite Harder, LCSW R is a Clinical Social Worker provider in Hollis, NY (NPI 1144367855).
Provider details
- NPI number
- 1144367855
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW R
- Sex
- Female
- Sole proprietor
- Yes
- License
- R035834-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
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
18410 Jamaica Ave
Hollis, NY 11423-2400
Phone: (718) 454-6940
Fax: (718) 264-3203
Street-level locationGet directions
Mailing address
18 Lynbrook Ave
Lynbrook, NY 11563-2156
Registry dates
- Enumerated
- 2007-01-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marguerite Harder's NPI number?
- Marguerite Harder's National Provider Identifier (NPI) is 1144367855, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marguerite Harder's specialty?
- Marguerite Harder is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Marguerite Harder located?
- Marguerite Harder's practice location on file with NPPES is 18410 Jamaica Ave, Hollis, NY 11423-2400.
- What is Marguerite Harder's phone number?
- The practice phone number listed in the NPPES registry for Marguerite Harder is (718) 454-6940.
- Is Marguerite Harder's NPI active?
- Yes — Marguerite Harder's NPI (1144367855) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.