Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Addison T Stone, MD

Orthopaedic Surgery Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1538269006

Verified

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Registry record

Entity type Individual (Type 1)

Name Addison T Stone

Credential MD

Sex Male

Practice address 901 Boren Ave, Suite 800, Seattle, WA, 98104

Phone (206) 323-1900

Fax (206) 323-6868

Enumeration date Sep 25, 2006

Last updated in NPPES Dec 31, 2012

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License ML20008136 (WA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License MD60137857 (WA) Primary

207XS0117X Orthopaedic Surgery of the Spine Physician Allopathic & Osteopathic Physicians · License MD60137857 (WA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What is the NPI number for Addison Stone?

The National Provider Identifier (NPI) for Addison Stone is 1538269006, a Type 1 (individual) record in the CMS NPPES registry.

Where does Addison Stone practice?

The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-31.