Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. William Brandwein
Optician in Sayville, NY · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1336559426
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Registry record
Entity type Individual (Type 1)
Name Mr. William Brandwein
Sex Male
Practice address 22 S Main St, Sayville, NY, 11782
Phone (631) 589-5544
Fax (631) 218-0919
Enumeration date Apr 29, 2014
Last updated in NPPES Jun 14, 2026
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for William Brandwein?
The National Provider Identifier (NPI) for William Brandwein is 1336559426, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Brandwein practice?
The practice location on file with NPPES is in Sayville, 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 2026-06-14.