Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William J. Massinger IV, LCSW

Individual provider Clinical Social Worker · NPI 1255466371

William J. Massinger IV, LCSW is a Clinical Social Worker in Southampton, Pennsylvania. Qualified in 1994, 32 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
32
Licensed in
PA
In the registry since
2007
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

504 Lakeside Dr
Southampton, PA 18966
Phone: (215) 354-0777
Fax: (215) 354-0772
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence CW008523L (PA)

Record details

NPI number1255466371
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedFebruary 22, 2007
Last updated in NPPESJune 6, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1994 (32 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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