Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Island Nutrition and Wellness LLC

Nutritionist in Mercer Island, WA · enumerated 2024 · authorized official Giselle Greisman, Owner.

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

National Provider Identifier

1396506812

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Registry record

Entity type Organization (Type 2)

Legal business name Island Nutrition and Wellness LLC

Practice address 6511 82nd Ave Se, Mercer Island, WA, 98040

Phone (206) 930-1130

Enumeration date Jan 22, 2024

Last updated in NPPES Jan 22, 2024

Taxonomy & classification

133N00000X Nutritionist Dietary & Nutritional Service Providers Primary

Authorized official

Name Giselle Greisman

Title Owner

Phone (206) 930-1130

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.

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Frequently asked questions

Where is Island Nutrition and Wellness LLC located?

The practice location on file with NPPES is in Mercer Island, WA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2024-01-22. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Giselle Greisman Nutritionist · Mercer Island, WA NPI 1841051307

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-22.