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

Mary Margaret Winter, OT

Individual provider Occupational Therapist · NPI 1528699600

Mary Margaret Winter, OT is an Occupational Therapist in Private Practice in Longview, Washington. Qualified in 2019, 7 years ago. Works from 3 locations. Licensed in Washington.

Years since qualifying
7
Licensed in
WA
In the registry since
2020
What do these letters mean?
OT — Occupational Therapist
Helps people regain the skills needed for daily living and work.

See every abbreviation used in this directory →

Practice location Address checks out

200 Triangle Ctr #270
Longview, WA 98632
Phone: (360) 501-3750
Fax: (360) 501-3755
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 59 E Queen Ave Ste 212, Spokane, WA 99207-1404 — (509) 348-2409
  • 123 W Cascade Way, Spokane, WA 99208-6017 — (509) 624-3115

Specialties & licences

Occupational Therapist (primary) Taxonomy 225X00000X · Licence OT61033253 (WA)

Record details

NPI number1528699600
Entity typeIndividual (Type 1)
GenderFemale
Credentials OT
Sole proprietorNo
NPI enumeratedJanuary 28, 2020
Last updated in NPPESNovember 14, 2025
Certification dateNovember 14, 2025

Medicare enrollment

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

Medicare specialtyOCCUPATIONAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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