Fiona De Graaff
NPI 1578809893 · Speech-Language Pathologist · Valhalla, NY
Fiona De Graaff is a Speech-Language Pathologist provider in Valhalla, NY (NPI 1578809893).
Provider details
- NPI number
- 1578809893
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 023089-1 (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
13 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
- 2012-12-13
- Last updated
- 2016-02-26
Frequently asked questions
- What is Fiona De Graaff's NPI number?
- Fiona De Graaff's National Provider Identifier (NPI) is 1578809893, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fiona De Graaff's specialty?
- Fiona De Graaff is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Fiona De Graaff located?
- Fiona De Graaff's practice location on file with NPPES is 503 Grasslands Rd, Valhalla, NY 10595-1503.
- What is Fiona De Graaff's phone number?
- The practice phone number listed in the NPPES registry for Fiona De Graaff is (914) 593-0593.
- Is Fiona De Graaff's NPI active?
- Yes — Fiona De Graaff's NPI (1578809893) is active in the NPPES registry as of the last update on 2016-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.