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

Mr. Dennis P. Cassan, LCSW

Individual provider Clinical Social Worker · NPI 1154425270

Mr. Dennis P. Cassan, LCSW is a Clinical Social Worker in Laguna Niguel, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

30011 Ivy Glenn Dr 206
Laguna Niguel, CA 92677-5017
Phone: (310) 968-0245
Fax: (949) 425-0202
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 16049 (CA)

Record details

NPI number1154425270
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedSeptember 11, 2006
Last updated in NPPESSeptember 7, 2015

Other providers in Laguna Niguel