Jillian Johnstone, LCSW
NPI 1275786659 · Clinical Social Worker · Greenport, NY
Jillian Johnstone, LCSW is a Clinical Social Worker provider in Greenport, NY (NPI 1275786659).
Provider details
- NPI number
- 1275786659
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 078852 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
2 documented practice locations
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
Additional practice locations (1)
- 1305 Crown Land LnCutchogue, NY 11935-1254Phone: (631) 680-9770
Registry dates
- Enumerated
- 2008-10-29
- Last updated
- 2024-07-24
- Certified
- 2024-07-24
Frequently asked questions
- What is Jillian Johnstone's NPI number?
- Jillian Johnstone's National Provider Identifier (NPI) is 1275786659, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jillian Johnstone's specialty?
- Jillian Johnstone is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jillian Johnstone located?
- Jillian Johnstone's practice location on file with NPPES is 720 Front St, Greenport, NY 11944-1500.
- What is Jillian Johnstone's phone number?
- The practice phone number listed in the NPPES registry for Jillian Johnstone is (631) 477-1950.
- Is Jillian Johnstone's NPI active?
- Yes — Jillian Johnstone's NPI (1275786659) is active in the NPPES registry as of the last update on 2024-07-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.