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

Individual provider Occupational Therapist · NPI 1740950138

Claire Ruth Trefethen, OTD is an Occupational Therapist in Private Practice in Brooklyn, New York. Qualified in 2021, 5 years ago. Practices with Spear Physical and Occupational Therapy, LLC, a 577-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona and New York.

Years since qualifying
5
Licensed in
AZ, NY
In the registry since
2021
Specialties on file
2
What do these letters mean?
OTD — Doctor of Occupational Therapy
The doctoral degree in occupational therapy.

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Practice location Address checks out

41 Clark St
Brooklyn, NY 11201-2415
Phone: (646) 518-5566
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 65 E University Dr, Tempe, AZ 85281-1091 — (480) 317-4444

Specialties & licences

Occupational Therapist (primary) Taxonomy 225X00000X · Licence 027577 (NY)
Occupational Therapist Taxonomy 225X00000X · Licence OTH-008610 (AZ)

Record details

NPI number1740950138
Entity typeIndividual (Type 1)
GenderFemale
Credentials OTD
Sole proprietorYes
NPI enumeratedSeptember 16, 2021
Last updated in NPPESApril 17, 2025
Certification dateApril 17, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOCCUPATIONAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Spear Physical And Occupational Therapy, Llc — 577 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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