Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Catherine Westerduin

Individual provider Clinical Social Worker · NPI 1114600061

Catherine Westerduin is a Clinical Social Worker in Philadelphia, Pennsylvania. Practices as a sole proprietor and works from 3 locations. Licensed in New Jersey and Pennsylvania.

Licensed in
NJ, PA
In the registry since
2023
Specialties on file
2
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Practice location Address checks out

3900 Woodland Ave
Philadelphia, PA 19104-4551
Phone: (215) 823-4458
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 580 Haddon Ave, Collingswood, NJ 08108-1443 — (201) 745-7162
  • 21 Tanner St, Haddonfield, NJ 08033-2403 — (201) 745-7162

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 44SC06247800 (NJ)
Clinical Social Worker Taxonomy 1041C0700X · Licence CW02310 (PA)

Record details

NPI number1114600061
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedAugust 8, 2023
Last updated in NPPESDecember 5, 2025
Certification dateDecember 5, 2025

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