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

Mrs. Mary Michaelle Hennessey-Peirce, LCSW

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1437237484

Mrs. Mary Michaelle Hennessey-Peirce, LCSW is an Addiction (Substance Use Disorder) Counselor in Mesa, Arizona. Licensed in Arizona. Registered with an NPI since 2006.

Licensed in
AZ
In the registry since
2006
Specialties on file
2
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

7254 E Southern Ave Ste #123
Mesa, AZ 85209
Phone: (602) 617-6595
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

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 0579 (AZ)
Clinical Social Worker Taxonomy 1041C0700X · Licence 10373 (AZ)

Record details

NPI number1437237484
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedNovember 1, 2006
Last updated in NPPESSeptember 11, 2025

Other providers in Mesa