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

MS. Sarah Therese Harkness

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1245569599

MS. Sarah Therese Harkness is an Addiction (Substance Use Disorder) Counselor in San Mateo, California. Practices as a sole proprietor. Registered with an NPI since 2009.

In the registry since
2009
Specialties on file
2

Practice location Address checks out

2041 Pioneer Ct Ste 203
San Mateo, CA 94403-1729
Phone: (415) 572-9217
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X

Record details

NPI number1245569599
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedDecember 16, 2009
Last updated in NPPESAugust 31, 2015

Other providers in San Mateo