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

Gwin Michelle Stewart, PHD, CASAC

Individual provider Addiction (Substance Use Disorder) Psychologist · NPI 1073706008

Gwin Michelle Stewart, PHD, CASAC is an Addiction (Substance Use Disorder) Psychologist in Saint Louis, Missouri. Licensed in Missouri. Registered with an NPI since 2007.

Licensed in
MO
In the registry since
2007
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

425 Marshall Ave
Saint Louis, MO 63119-1833
Phone: (314) 724-0503
Fax: (314) 725-2744
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Psychologist (primary) Taxonomy 103TA0400X · Licence 2002011104 (MO)

Record details

NPI number1073706008
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD , CASAC
Sole proprietorNo
NPI enumeratedAugust 22, 2007
Last updated in NPPESOctober 4, 2007

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