Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Katharine Williams, PHD and Associates

Organization Psychologist · NPI 1891999223

Katharine Williams, PHD and Associates provides Psychologist services 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 Not confirmed with CMS for 17 years — call before visiting
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