Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Joseph A Sifferman, O.D.
Optometrist in Seattle, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750356093
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Registry record
Entity type Individual (Type 1)
Name Dr. Joseph A Sifferman
Credential O.D.
Sex Male
Practice address 7001 Roosevelt Way Ne, Seattle, WA, 98115
Phone (206) 527-2987
Fax (206) 526-8076
Enumeration date Feb 21, 2006
Last updated in NPPES Aug 9, 2010
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
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
Where does Joseph Sifferman practice?
The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Joseph Sifferman?
The National Provider Identifier (NPI) for Joseph Sifferman is 1750356093, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-09.