Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jenni Sossin Masse
Counselor in Redwood City, CA · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770731093
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Registry record
Entity type Individual (Type 1)
Name Jenni Sossin Masse
Sex Female
Practice address 37 Clinton St, Redwood City, CA, 94062
Phone (650) 367-9610
Enumeration date Aug 28, 2008
Last updated in NPPES Aug 28, 2008
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
Where does Jenni Masse practice?
The practice location on file with NPPES is in Redwood City, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jenni Masse?
The National Provider Identifier (NPI) for Jenni Masse is 1770731093, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-28.