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

Mr. William Gresser, MA

Individual provider Mental Health Counselor · NPI 1558341529

Mr. William Gresser, MA is a Mental Health Counselor in Acton, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MA — Master of Arts
A graduate arts degree.

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Practice location Address checks out

162 Great Rd
Acton, MA 01720-5760
Phone: (781) 641-4104
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 141 (MA)
Mental Health Counselor Taxonomy 101YM0800X · Licence 255 (MA)

Record details

NPI number1558341529
Entity typeIndividual (Type 1)
GenderMale
Credentials MA
Sole proprietorNo
NPI enumeratedJanuary 18, 2006
Last updated in NPPESJuly 13, 2026

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