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

Katharine Williams, PHD and Associates

Organization Psychologist · NPI 1891999223

Katharine Williams, PHD and Associates is a Psychologist in Youngstown, Ohio. Registered with an NPI since 2007.

In the registry since
2007

Practice location Address checks out

5500 Market St Ste 205
Youngstown, OH 44512-2624
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 number1891999223
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Katharine Williams — Phd · (330) 783-1718
NPI enumeratedJune 11, 2007
Last updated in NPPESNovember 4, 2008
Mailing address5500 Market St Ste 205, Youngstown, OH 44512-2624

Other providers in Youngstown