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

Mr. Roy C Marks, MA, LCSW

Individual provider Psychologist · NPI 1154365955

Mr. Roy C Marks, MA, LCSW is a Psychologist in Saint Louis, Missouri. Licensed in Missouri. Registered with an NPI since 2006.

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

5524 Grant Pl
Saint Louis, MO 63116-3304
Phone: (314) 721-2155
Fax: (314) 457-0611
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 002304 (MO)

Record details

NPI number1154365955
Entity typeIndividual (Type 1)
GenderMale
Credentials MA , LCSW
Sole proprietorNo
NPI enumeratedJune 15, 2006
Last updated in NPPESAugust 9, 2026
Certification dateJuly 19, 2021

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