Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Lauren Stacey Greenwald Froitzheim, LCSW
Social Worker in Sayville, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578642021
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Registry record
Entity type Individual (Type 1)
Name Mrs. Lauren Stacey Greenwald Froitzheim
Credential LCSW
Sex Female
Practice address 22 30 Railroad Avenue, Sayville, NY, 11782
Phone (631) 218-1960
Enumeration date Nov 3, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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 Lauren Greenwald Froitzheim practice?
The practice location on file with NPPES is in Sayville, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Lauren Greenwald Froitzheim?
The National Provider Identifier (NPI) for Lauren Greenwald Froitzheim is 1578642021, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.