Mary Ellen Johnston, L-RCSW
NPI 1760672075 · Clinical Social Worker · Port Jefferson Station, NY
Mary Ellen Johnston, L-RCSW is a Clinical Social Worker provider in Port Jefferson Station, NY (NPI 1760672075).
Provider details
- NPI number
- 1760672075
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- L-RCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- R038676-1 (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
18 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
- 2007-08-01
- Last updated
- 2013-05-22
Frequently asked questions
- What is Mary Ellen Johnston's NPI number?
- Mary Ellen Johnston's National Provider Identifier (NPI) is 1760672075, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ellen Johnston's specialty?
- Mary Ellen Johnston is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mary Ellen Johnston located?
- Mary Ellen Johnston's practice location on file with NPPES is 23 Kennedy Rd, Port Jefferson Station, NY 11776-1809.
- What is Mary Ellen Johnston's phone number?
- The practice phone number listed in the NPPES registry for Mary Ellen Johnston is (631) 766-5318.
- Is Mary Ellen Johnston's NPI active?
- Yes — Mary Ellen Johnston's NPI (1760672075) is active in the NPPES registry as of the last update on 2013-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.