MARY MARGARET WINTER OT
NPI 1528699600
Occupational Therapist in Longview, WA
About Mary Margaret Winter Ot NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY MARGARET WINTER OT (NPI 1528699600) is an individual occupational therapist in Longview, Washington, licensed in Washington (OT61033253) and active in the NPI registry since January 2020. She maintains 2 additional practice locations and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Margaret Winter Ot is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Winter reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Longview, WA 98632
- Reassigned Medicare billing, Washington enrollment
- 308 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mary Winter's NPI number?
The NPI number for Mary Winter is 1528699600. It was assigned to this individual provider in the NPPES registry on January 28, 2020.
Where is Mary Winter located?
Mary Winter practices at 200 Triangle Center #270, Longview, WA 98632. The listed phone number is (360) 501-3750.
What is Mary Winter's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Mary Winter enrolled in Medicare?
Yes. Mary Winter is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Winter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Winter reassigns Medicare benefits to Peacehealth (Longview, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Winter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Winter accept?
Health plans from Moda Health Plan, Inc., PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Mary Winter as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mary Winter was last updated on November 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.