Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen Sax, LSW
Social Worker in Radnor, PA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1972059996
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Registry record
Entity type Individual (Type 1)
Name Karen Sax
Credential LSW
Sex Female
Practice address 320 King of Prussia Rd, Radnor, PA, 19087
Phone (610) 527-9360
Enumeration date Aug 30, 2016
Last updated in NPPES Aug 30, 2016
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License SW132837 (PA) Primary
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 Karen Sax?
The National Provider Identifier (NPI) for Karen Sax is 1972059996, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karen Sax practice?
The practice location on file with NPPES is in Radnor, PA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Luciano Legaspi Physical Therapist · Radnor, PA NPI 1295846236 Performance Physical Therapy & Fitness, Inc. Physical Therapy Clinic/Center · Radnor, PA NPI 1083725055 Richard Pacropis Internal Medicine Physician · Radnor, PA NPI 1700997640 Rajnee Dhawan Internal Medicine Physician · Radnor, PA NPI 1427169382 Richard F Pacropis MD PC Internal Medicine Physician · Radnor, PA NPI 1922106764 Tiffany Prince Physical Therapist · Radnor, PA NPI 1306914940 Beth Rosenbaum Clinical Social Worker · Radnor, PA NPI 1083756589 Lisa Mimmo Mental Health Counselor · Radnor, PA NPI 1174798862
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-08-30.