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Ellen Neff, LCSW
NPI 1639220775 · Clinical Social Worker · Southold, NY
Ellen Neff, LCSW is a Clinical Social Worker provider in Southold, NY (NPI 1639220775).
Provider details
- NPI number
- 1639220775
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- R052555-1 (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
44210 North Rd
Southold, NY 11971-5032
Phone: (631) 463-3142
Fax: (631) 477-1284
Approximate (ZIP-level) locationGet directions
Mailing address
Po Box 39
Greenport, NY 11944-0039
Registry dates
- Enumerated
- 2007-01-16
- Last updated
- 2010-03-03
Frequently asked questions
- What is Ellen Neff's NPI number?
- Ellen Neff's National Provider Identifier (NPI) is 1639220775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Neff's specialty?
- Ellen Neff is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Ellen Neff located?
- Ellen Neff's practice location on file with NPPES is 44210 North Rd, Southold, NY 11971-5032.
- What is Ellen Neff's phone number?
- The practice phone number listed in the NPPES registry for Ellen Neff is (631) 463-3142.
- Is Ellen Neff's NPI active?
- Yes — Ellen Neff's NPI (1639220775) is active in the NPPES registry as of the last update on 2010-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.