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

Mary Todd Williamson, PHD

Individual provider Clinical Psychologist · NPI 1821041021

Mary Todd Williamson, PHD is a Clinical Psychologist in Columbia, Missouri. Licensed in Missouri. Registered with an NPI since 2006.

Licensed in
MO
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

3217 S Providence Rd
Columbia, MO 65203-3639
Phone: (573) 884-7733
Fax: (573) 884-5559
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PY01775 (MO)

Record details

NPI number1821041021
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 18, 2006
Last updated in NPPESSeptember 25, 2008
Mailing addressPo Box 7687, Columbia, MO 65205-7687

Other providers in Columbia