Marcia Diffley
NPI 1659543924 · Speech-Language Pathologist · Floral Park, NY
Marcia Diffley is a Speech-Language Pathologist provider in Floral Park, NY (NPI 1659543924).
Provider details
- NPI number
- 1659543924
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 01355-2 (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
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
- 2008-03-27
- Last updated
- 2008-03-27
Frequently asked questions
- What is Marcia Diffley's NPI number?
- Marcia Diffley's National Provider Identifier (NPI) is 1659543924, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcia Diffley's specialty?
- Marcia Diffley is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Marcia Diffley located?
- Marcia Diffley's practice location on file with NPPES is 34 Crocus Ave, Floral Park, NY 11001-2639.
- What is Marcia Diffley's phone number?
- The practice phone number listed in the NPPES registry for Marcia Diffley is (516) 424-6690.
- Is Marcia Diffley's NPI active?
- Yes — Marcia Diffley's NPI (1659543924) is active in the NPPES registry as of the last update on 2008-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.