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

Jeffrey Donald Siemsen, LCSW

Individual provider Clinical Social Worker · NPI 1629223490

Jeffrey Donald Siemsen, LCSW is a Clinical Social Worker in Kennett Square, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2008
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

107 Marshall Bridge Rd
Kennett Square, PA 19348-2705
Phone: (302) 521-3019
Fax: (610) 444-0226
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence CW016873 (PA)

Record details

NPI number1629223490
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedNovember 20, 2008
Last updated in NPPESSeptember 26, 2011

Other providers in Kennett Square