Quick answers
- Where does William J. Massinger Iv see patients?
- Medicare's clinician data lists 1 practice location in Southampton, PA. Call before your visit to confirm the address.
- What is William J. Massinger Iv's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does William J. Massinger Iv accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Massinger Iv accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is William J. Massinger Iv's NPI number?
- 1255466371. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William J. Massinger Iv is enrolled with Medicare (CMS data updated 2026-10-02).
- 504 Lakeside DrSouthampton, PA 18960
Specialties
- Clinical Social Workerprimary
Find other clinicians: Clinical Social Worker, Pennsylvania →
Other clinical social workers in Southampton
Clinicians with the same Medicare primary specialty in Southampton, PA — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255466371 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians