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

Mary E Detweiler, LCSW

Individual provider Clinical Social Worker · NPI 1053324194

Mary E Detweiler, LCSW is a Clinical Social Worker in Lancaster, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2006.

Licensed in
PA
In the registry since
2006
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Practice location Address checks out

630 Janet Ave
Lancaster, PA 17601-4527
Phone: (717) 397-5241
Fax: (717) 397-2530
Show map & directions

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence CW013954 (PA)

Record details

NPI number1053324194
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedAugust 13, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Lancaster