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

MS. Margaret M Guest, PHD

Individual provider Psychologist · NPI 1770818262

MS. Margaret M Guest, PHD is a Psychologist in Saint Louis, Missouri. Practices as a sole proprietor. Licensed in Missouri.

Licensed in
MO
In the registry since
2009
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

130 S Bemiston Ave Ste 710
Saint Louis, MO 63105-1913
Phone: (314) 863-1007
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 827 (MO)

Record details

NPI number1770818262
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedOctober 16, 2009
Last updated in NPPESOctober 16, 2009

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