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

William Keith Lagasse, LCSW

Individual provider Clinical Social Worker · NPI 1871716522

William Keith Lagasse, LCSW is a Clinical Social Worker in Lewiston, Maine. Qualified in 2005, 21 years ago. Practices with Mainehealth, a 2,615-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maine.

Years since qualifying
21
Licensed in
ME
In the registry since
2007
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

105 Middle St Ste 2
Lewiston, ME 04240-7037
Phone: (207) 576-9645
Fax: (207) 784-6021
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 LC11562 (ME)

Record details

NPI number1871716522
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedApril 11, 2007
Last updated in NPPESMay 8, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in Lewiston