NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Joseph Patrick Sonnenberg, M.S.

Speech-Language Pathologist in Buffalo, NY · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1619921954

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Joseph Patrick Sonnenberg
Credential M.S.
Sex Male
Practice address 50 E North St, Buffalo, NY, 14203
Phone (716) 885-8871
Fax (716) 885-4229
Enumeration date May 20, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 000058-1 (NY) Primary

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for Joseph Sonnenberg?
The National Provider Identifier (NPI) for Joseph Sonnenberg is 1619921954, a Type 1 (individual) record in the CMS NPPES registry.
Where does Joseph Sonnenberg practice?
The practice location on file with NPPES is in Buffalo, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.