Ellen Deffes, MS CCC/SLP
NPI 1336384692 · Speech-Language Pathologist · Syosset, NY
Ellen Deffes, MS CCC/SLP is a Speech-Language Pathologist provider in Syosset, NY (NPI 1336384692).
Provider details
- NPI number
- 1336384692
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- MS CCC/SLP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 007759-1 (NY)
Specialties & taxonomies
Speech, Language and Hearing 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
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
- 2008-12-15
- Last updated
- 2008-12-15
Frequently asked questions
- What is Ellen Deffes's NPI number?
- Ellen Deffes's National Provider Identifier (NPI) is 1336384692, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Deffes's specialty?
- Ellen Deffes is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Ellen Deffes located?
- Ellen Deffes's practice location on file with NPPES is 47 Humphrey Drive, Syosset, NY 11791-6012.
- What is Ellen Deffes's phone number?
- The practice phone number listed in the NPPES registry for Ellen Deffes is (516) 921-7171.
- Is Ellen Deffes's NPI active?
- Yes — Ellen Deffes's NPI (1336384692) is active in the NPPES registry as of the last update on 2008-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.