Mr. William Ernst Deroo, SLP
Mr. William Ernst Deroo is a Speech-Language Pathologist provider (Speech-Language Pathologist) practicing in Buffalo, NY, registered in the NPPES registry with NPI 1497968432 since 2007. The credential SLP stands for Speech-Language Pathologist.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1497968432 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. William Ernst Deroo |
| Credential | SLP |
| Sex | Male |
| Practice address | 50 E NORTH ST, Buffalo, NY, 14203 |
| Phone | 7168858318 |
| Fax | 7168850229 |
| Enumeration date | 2007-05-07 |
| Last updated in NPPES | 2013-05-29 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 235Z00000X | Speech-Language Pathologist | Primary | 7309 | NY |
SLP — Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP credential
Copy-ready billing details
Provider: William Deroo, SLP NPI: 1497968432 Taxonomy: 235Z00000X (Speech-Language Pathologist) Address: 50 E NORTH ST, Buffalo, NY, 14203
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1891745758 | Buffalo Hearing & Speech Center, Inc | Organization | Speech-Language Pathologist | Buffalo, NY |
| 1275586257 | Jennifer Gilmore | Individual | Physical Therapist | Buffalo, NY |
| 1619921954 | Joseph Sonnenberg | Individual | Speech-Language Pathologist | Buffalo, NY |
| 1275568263 | Noreen Buchanan | Individual | Speech-Language Pathologist | Buffalo, NY |
| 1457464984 | Audrey Bridenbaker | Individual | Physical Therapist | Buffalo, NY |
| 1023125184 | Stephanie Loranty | Individual | Speech-Language Pathologist | Buffalo, NY |
| 1982706172 | Julie Wilkins | Individual | Speech-Language Pathologist | Buffalo, NY |
| 1912083197 | Sarah Marsack | Individual | Speech-Language Pathologist | Buffalo, NY |
Verify this record
Cross-check NPI 1497968432 against the authoritative CMS record: view Mr. William Ernst Deroo 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-05-29.