Margaret Fitzgerald-Cowlishaw, LCSW
NPI 1972529253 · Clinical Social Worker · East Islip, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Fitzgerald-Cowlishaw, LCSW is a Clinical Social Worker provider in East Islip, NY (NPI 1972529253).
Provider details
- NPI number
- 1972529253
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- R045443 (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
- 2006-07-13
- Last updated
- 2026-03-17
- Certified
- 2026-03-17
Frequently asked questions
- What is Margaret Fitzgerald-Cowlishaw's NPI number?
- Margaret Fitzgerald-Cowlishaw's National Provider Identifier (NPI) is 1972529253, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Fitzgerald-Cowlishaw's specialty?
- Margaret Fitzgerald-Cowlishaw is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Margaret Fitzgerald-Cowlishaw located?
- Margaret Fitzgerald-Cowlishaw's practice location on file with NPPES is 107 W Main St, East Islip, NY 11730-2337.
- What is Margaret Fitzgerald-Cowlishaw's phone number?
- The practice phone number listed in the NPPES registry for Margaret Fitzgerald-Cowlishaw is (631) 666-1615.
- Does Margaret Fitzgerald-Cowlishaw accept Medicare?
- Margaret Fitzgerald-Cowlishaw is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Fitzgerald-Cowlishaw's NPI active?
- Yes — Margaret Fitzgerald-Cowlishaw's NPI (1972529253) is active in the NPPES registry as of the last update on 2026-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.