CATHERINE WESTERDUIN
NPI 1114600061
Social Worker - Clinical in Philadelphia, PA

Active since August 08, 2023
3900 WOODLAND AVE, PHILADELPHIA, PA 19104(215) 823-4458 Get Directions Write a Review

NPPES record last updated: December 5, 2025. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Dec 5, 2025, Aug 8, 2023 (2 updates tracked since 2023).

About Catherine Westerduin NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CATHERINE WESTERDUIN (NPI 1114600061) is an individual clinical provider in Philadelphia, Pennsylvania, licensed in New Jersey (44SC06247800) and active in the NPI registry since August 2023. She maintains 2 additional practice locations.

NPPES Registry Identity

NPI1114600061
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameCATHERINE WESTERDUIN
Location Address3900 WOODLAND AVEPhiladelphia, PA 19104-4551
Mailing Address580 Haddon AveCollingswood, NJ 08108-1443 · (201) 745-7162
Sole ProprietorYes
Enumeration DateAugust 8, 2023
Last NPPES UpdateDecember 5, 20252 updates tracked since enumeration
NPPES CertifiedDecember 5, 2025
✔ NPI 1114600061 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in NJ · 44SC06247800✔ Licensed in PA · CW02310
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
3900 WOODLAND AVE, Philadelphia, PA 19104

Secondary Practice Locations 2

Location 121 Tanner StHaddonfield, NJ 08033-2403 · Phone (201) 745-7162
Location 2580 Haddon AveCollingswood, NJ 08108-1443 · Phone (201) 745-7162

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychiatry & Neurology (Neurology)
3900 WOODLAND AVE, PADRECC, #127
PHILADELPHIA, PA 19104
Social Worker (Clinical)
3900 WOODLAND AVE
PHILADELPHIA, PA 19104
Counselor (Addiction (Substance Use Disorder))
3900 WOODLAND AVE, ADDICTION RECOVERY UNIT 7TH FLOOR
PHILADELPHIA, PA 19104
Dietitian, Registered (Nutrition, Gerontological)
3900 WOODLAND AVE
PHILADELPHIA, PA 19104
Nurse Practitioner (Acute Care)
3900 WOODLAND AVE
PHILADELPHIA, PA 19104
Pharmacist (Pharmacotherapy)
3900 WOODLAND AVE, PHARMACY SERVICE #119
PHILADELPHIA, PA 19104
Physical Therapist
3900 WOODLAND AVE
PHILADELPHIA, PA 19104
Internal Medicine
3900 WOODLAND AVE
PHILADELPHIA, PA 19104

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Catherine Westerduin's NPI number?

The NPI number for Catherine Westerduin is 1114600061. It was assigned to this individual provider in the NPPES registry on August 8, 2023.

Where is Catherine Westerduin located?

Catherine Westerduin practices at 3900 Woodland Ave, Philadelphia, PA 19104. The listed phone number is (215) 823-4458.

What is Catherine Westerduin's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Catherine Westerduin was last updated on December 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.