Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Claire Foss, L.C.S.W.
Social Worker in Palatine, IL · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871897264
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Registry record
Entity type Individual (Type 1)
Name Claire Foss
Credential L.C.S.W.
Sex Female
Practice address 800 E Northwest Hwy Ste 500, Palatine, IL, 60074
Phone (214) 923-7572
Enumeration date Dec 29, 2010
Last updated in NPPES Jul 24, 2018
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 149016731 (IL) Secondary
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
What is the NPI number for Claire Foss?
The National Provider Identifier (NPI) for Claire Foss is 1871897264, a Type 1 (individual) record in the CMS NPPES registry.
Where does Claire Foss practice?
The practice location on file with NPPES is in Palatine, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Michelle Kukla Psyd PC Clinical Psychologist · Palatine, IL NPI 1225388697 Jo Wolthusen, Psyd PC Clinical Psychologist · Palatine, IL NPI 1427309392 Brittany Simon Clinical Psychologist · Palatine, IL NPI 1184066383 Brittany Simon Lcpc LLC Professional Counselor · Palatine, IL NPI 1720420938 New Perspectives Counseling LLC Mental Health Clinic/Center (Including Community Mental Health Center) · Palatine, IL NPI 1346640430 Simon Psychology, P.C. Mental Health Clinic/Center (Including Community Mental Health Center) · Palatine, IL NPI 1568991263
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-24.