Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ryan Frederick Holbrook, M.D.

Surgical Oncology Physician in Spokane, WA · enumerated 2005.

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

National Provider Identifier

1801885520

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Registry record

Entity type Individual (Type 1)

Name Ryan Frederick Holbrook

Credential M.D.

Sex Male

Practice address 601 S Sherman St, Spokane, WA, 99202

Phone (509) 228-1000

Fax (509) 252-9300

Enumeration date Oct 14, 2005

Last updated in NPPES Mar 27, 2017

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License MD00032407 (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
1093673	Medicaid	WA	-
KR827	Other	-	BLUE CROSS OF IDAHO
000010138943	Other	-	BLUE SHIELD OF IDAHO
4581883	Other	-	AETNA
HO2112	Other	-	ASURIS NORTHWEST HEALTH
910000377	Other	-	RAILROAD MEDICARE
000570500	Medicaid	ID	-
0161842	Other	-	DEPT OF LABOR & INDUSTRIE

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

How do I verify Ryan Holbrook's NPI record?

Cross-check NPI 1801885520 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1801885520 active?

Yes, as of the latest NPPES snapshot, NPI 1801885520 is active (record last updated 2017-03-27).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-27.