Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mrs. Katherine Grace Hartsook, OTR/L

Individual provider Occupational Therapist · NPI 1740806843

Mrs. Katherine Grace Hartsook, OTR/L is an Occupational Therapist in Chicago, Illinois. Practices as a sole proprietor. Licensed in Oklahoma.

Licensed in
OK
In the registry since
2020
What do these letters mean?
OTR/L — Occupational Therapist, Registered and Licensed
An occupational therapist who is both nationally registered and state licensed.

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Practice location Address checks out

345 E Superior St
Chicago, IL 60611-2654
Phone: (312) 238-6850
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Occupational Therapist (primary) Taxonomy 225X00000X · Licence 5446 (OK)

Record details

NPI number1740806843
Entity typeIndividual (Type 1)
GenderFemale
Credentials OTR/L
Sole proprietorYes
NPI enumeratedJune 24, 2020
Last updated in NPPESJuly 2, 2026
Certification dateJuly 2, 2026

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