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

Dr. Katharine Williams, PHD

Individual provider Psychologist · NPI 1730157900

Dr. Katharine Williams, PHD is a Psychologist in Youngstown, Ohio. Practices as a sole proprietor. Registered with an NPI since 2006.

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

5500 Market St Ste 205
Youngstown, OH 44512-2601
Phone: (330) 783-1718
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1730157900
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedMarch 14, 2006
Last updated in NPPESOctober 17, 2011

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