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

Individual provider Clinical Social Worker · NPI 1922121003

Mark S Grassman, MSW is a Clinical Social Worker in Boulder, Colorado. Practices as a sole proprietor. Licensed in Colorado.

Licensed in
CO
In the registry since
2007
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

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Practice location Address checks out

1244 Pine St
Boulder, CO 80302-4809
Phone: (303) 447-2727
Fax: (303) 444-2843
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 983032 (CO)

Record details

NPI number1922121003
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW
Sole proprietorYes
NPI enumeratedApril 6, 2007
Last updated in NPPESJuly 8, 2007

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