Miss Fiona Sarah De Graaff
Miss Fiona Sarah De Graaff is a Speech-Language Pathologist provider (Speech-Language Pathologist) practicing in Valhalla, NY, registered in the NPPES registry with NPI 1578809893 since 2012.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1578809893 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Miss Fiona Sarah De Graaff |
| Sex | Female |
| Practice address | Valhalla, NY, 10595 |
| Phone | 9145930593 |
| Enumeration date | 2012-12-13 |
| Last updated in NPPES | 2016-02-26 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 235Z00000X | Speech-Language Pathologist | Primary | 023089-1 | NY |
Copy-ready billing details
Provider: Fiona De Graaff NPI: 1578809893 Taxonomy: 235Z00000X (Speech-Language Pathologist) Address: Valhalla, NY, 10595
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1154320174 | Marcia Nackenson | Individual | Pediatric Adolescent Medicine Physician | Valhalla, NY |
| 1922008739 | Michael Halata | Individual | Pediatric Gastroenterology Physician | Valhalla, NY |
| 1669472403 | William Levinson | Individual | Developmental - Behavioral Pediatrics Physician | Valhalla, NY |
| 1922008762 | Maria Pici | Individual | Physical Medicine & Rehabilitation Physician | Valhalla, NY |
| 1295735041 | Stuart Berezin | Individual | Pediatric Gastroenterology Physician | Valhalla, NY |
| 1487654653 | Wallace Jenkins | Individual | Pediatric Adolescent Medicine Physician | Valhalla, NY |
| 1457351645 | Monique Regard | Individual | Pediatric Adolescent Medicine Physician | Valhalla, NY |
| 1619979697 | David Kronn | Individual | Clinical Genetics (M.D.) Physician | Valhalla, NY |
Verify this record
Cross-check NPI 1578809893 against the authoritative CMS record: view Miss Fiona Sarah De Graaff on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
Is this the official NPI registry?
What specialty is Fiona De Graaff?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-02-26.