Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Whidbey Island Hand & Lymphedema Therapyllc

Medical Specialty Clinic/Center in Oak Harbor, WA · enumerated 2009 · authorized official Margaret Siemer, Owner/Occupational Therapist.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1295069656

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Registry record

Entity type Organization (Type 2)

Legal business name Whidbey Island Hand & Lymphedema Therapyllc

Practice address 791 Se Fidalgo Ave, Suite 101, Oak Harbor, WA, 98277

Phone (360) 678-4068

Fax (360) 678-4087

Enumeration date Oct 1, 2009

Last updated in NPPES Sep 21, 2012

Taxonomy & classification

261QM2500X Medical Specialty Clinic/Center Ambulatory Health Care Facilities · License OT00004496 (WA) Primary

Authorized official

Name Margaret Siemer

Title Owner/Occupational Therapist

Phone (360) 678-4068

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Whidbey Island Hand & Lymphedema Therapyllc located?

The practice location on file with NPPES is in Oak Harbor, WA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-09-21. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-21.