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

Mr. Mark Thomas Alessandroni, LCSW

Individual provider Mental Health Counselor · NPI 1467504761

Mr. Mark Thomas Alessandroni, LCSW is a Mental Health Counselor in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
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.

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Practice location Address checks out

4141 Geary Blvd 3 Rd Flr
San Francisco, CA 94118-3109
Phone: (415) 833-0203
Fax: (415) 833-2248
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence LCS 19867 (CA)

Record details

NPI number1467504761
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJanuary 17, 2007
Last updated in NPPESJuly 8, 2007

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