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

Mary Ellen Fassnacht

Organization Clinical Social Worker · NPI 1013564079

Mary Ellen Fassnacht is a Clinical Social Worker in Butler, New Jersey. Works from 2 locations. Registered with an NPI since 2019.

In the registry since
2019

Practice location Address checks out

1250 Rte 23
Butler, NJ 07405-2037
Phone: (973) 722-9831
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 317 Godwin Ave, Midland Park, NJ 07432-1519 — (973) 722-9831

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X

Record details

NPI number1013564079
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mary Fassnacht — Owner/Provider · (973) 722-9831
NPI enumeratedAugust 23, 2019
Last updated in NPPESAugust 23, 2019
Mailing address317 Godwin Ave, Midland Park, NJ 07432-1519

Other providers in Butler