Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ryder P Gwinn, MD

Neurological Surgery Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1700945607

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Registry record

Entity type Individual (Type 1)

Name Ryder P Gwinn

Credential MD

Sex Male

Practice address 801 Broadway, Ste 901, Seattle, WA, 98122

Phone (206) 386-3880

Fax (206) 386-3882

Enumeration date Dec 6, 2006

Last updated in NPPES May 25, 2021

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License MD00043991 (WA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
8403511	Medicaid	WA	-
0187914	Other	WA	LABOR AND INDUSTRIES

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

Is NPI 1700945607 active?

Yes, as of the latest NPPES snapshot, NPI 1700945607 is active (record last updated 2021-05-25).

How do I verify Ryder Gwinn's NPI record?

Cross-check NPI 1700945607 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Robert Lieppman Obstetrics & Gynecology Physician · Seattle, WA NPI 1811984396 Dawn Scheve Obstetrics & Gynecology Physician · Seattle, WA NPI 1699762468 Eric Heinberg Surgery Physician · Seattle, WA NPI 1821071648 Machaon Medical Evaluations Inc Case Management Agency · Seattle, WA NPI 1467428748 Brian Lange Vascular Surgery Physician · Seattle, WA NPI 1811958465 Roman Wong Specialist · Seattle, WA NPI 1174584700 Charles Mangham Otology & Neurotology Physician · Seattle, WA NPI 1972565224 Philip Welch Gynecology Physician · Seattle, WA NPI 1801850284

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-25.