MRS. KATHERINE GRACE HARTSOOK OTR/L
NPI 1740806843
Occupational Therapist in Chicago, IL

Active since June 24, 2020
345 E SUPERIOR ST, CHICAGO, IL 60611(312) 238-6850 Get Directions Write a Review

NPPES record last updated: July 2, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 22, 2023, Jun 25, 2020 (2 updates tracked since 2020).

About Mrs. Katherine Grace Hartsook Otr/l NPPES

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

MRS. KATHERINE GRACE HARTSOOK OTR/L (NPI 1740806843) is an individual occupational therapist in Chicago, Illinois, licensed in Oklahoma (5446) and active in the NPI registry since June 2020.

NPPES Registry Identity

NPI1740806843
Entity TypeIndividualFemale
Primary Taxonomy225X00000X
Provider Legal NameMRS. KATHERINE GRACE HARTSOOKCredential: OTR/L
Location Address345 E SUPERIOR STChicago, IL 60611-2654
Mailing Address715 W Wrightwood Ave Apt 1Chicago, IL 60614-7067 · (405) 606-9372
Sole ProprietorYes
Enumeration DateJune 24, 2020
Last NPPES UpdateJuly 2, 20262 updates tracked since enumeration
NPPES CertifiedJuly 2, 2026
NPI 1740806843 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyOccupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code225X00000X
License Licensed in OK · 5446
Definition
An occupational therapist is a person who has graduated from an entry-level occupational therapy program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, or approved by the World Federation of Occupational Therapists (WFOT), or an equivalent international occupational therapy education program; has successfully completed a period of supervised fieldwork experience required by the occupational therapy program; has passed a nationally recognized entry-level examination for occupational therapists, and fulfills state requirements for licensure, certification, or registration. An occupational therapist provides interventions based on evaluation and which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapists address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life.
345 E SUPERIOR ST, Chicago, IL 60611

Other Names 1

Former Name (1)Katherine Grace Byrne

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.

Occupational Therapist (Physical Rehabilitation)
345 E SUPERIOR ST
CHICAGO, IL 60611
Physical Therapist
345 E SUPERIOR ST
CHICAGO, IL 60611
Physical Medicine & Rehabilitation
345 E SUPERIOR ST, 16TH FLOOR
CHICAGO, IL 60611
Speech-Language Pathologist
345 E SUPERIOR ST
CHICAGO, IL 60611
Occupational Therapist
345 E SUPERIOR ST
CHICAGO, IL 60611
Physical Therapist
345 E SUPERIOR ST
CHICAGO, IL 60611
Physical Therapist (Neurology)
345 E SUPERIOR ST
CHICAGO, IL 60611
Physical Therapist
345 E SUPERIOR ST
CHICAGO, IL 60611

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 Katherine Hartsook's NPI number?

The NPI number for Katherine Hartsook is 1740806843. It was assigned to this individual provider in the NPPES registry on June 24, 2020. The provider is also known as Katherine Grace Byrne.

Where is Katherine Hartsook located?

Katherine Hartsook practices at 345 E Superior St, Chicago, IL 60611. The listed phone number is (312) 238-6850.

What is Katherine Hartsook's specialty?

The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.

When was this NPI record last updated?

The NPPES record for Katherine Hartsook was last updated on July 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.