DR. KATHARINE WILLIAMS PHD
NPI 1730157900
Psychologist in Youngstown, OH

Active since March 14, 2006
5500 MARKET ST, SUITE 205, YOUNGSTOWN, OH 44512(330) 783-1718 Get Directions Write a Review

NPPES record last updated: October 17, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Katharine Williams Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KATHARINE WILLIAMS PHD (NPI 1730157900) is an individual psychologist in Youngstown, Ohio and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1730157900
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. KATHARINE WILLIAMSCredential: PHD
Location Address5500 MARKET ST, SUITE 205Youngstown, OH 44512-2601
Mailing Address5500 Market St, Suite 205Youngstown, OH 44512-2601 · (330) 783-1718
Sole ProprietorYes
Enumeration DateMarch 14, 2006
Last NPPES UpdateOctober 17, 2011
NPI 1730157900 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

5500 MARKET ST, Youngstown, OH 44512

Other Identifiers 1

Medicare ID-Type UnspecifiedCP09341

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physical Therapist
5500 MARKET ST, SUITE 127
YOUNGSTOWN, OH 44512
Counselor (Professional)
5500 MARKET ST, SUITE 90
YOUNGSTOWN, OH 44512
Behavior Technician
5500 MARKET ST
BOARDMAN, OH 44512
Specialist
5500 MARKET ST, STE 128
YOUNGSTOWN, OH 44512
Psychologist (Clinical)
5500 MARKET ST, SUITE 90
YOUNGSTOWN, OH 44512
Social Worker (Clinical)
5500 MARKET ST, SUITE 106
BOARDMAN, OH 44512
Behavior Technician
5500 MARKET ST
BOARDMAN, OH 44512
Psychologist
5500 MARKET ST
YOUNGSTOWN, OH 44512

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katharine Williams's NPI number?

The NPI number for Katharine Williams is 1730157900. It was assigned to this individual provider in the NPPES registry on March 14, 2006.

Where is Katharine Williams located?

Katharine Williams practices at 5500 Market St Suite 205, Youngstown, OH 44512. The listed phone number is (330) 783-1718.

What is Katharine Williams's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

When was this NPI record last updated?

The NPPES record for Katharine Williams was last updated on October 17, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.