Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Timothy J O'Brien, MD

Specialist in Ellensburg, WA · enumerated 2006.

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

National Provider Identifier

1770506453

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Timothy J O'Brien

Credential MD

Sex Male

Practice address 700 E Manitoba Ave, Suite 109, Ellensburg, WA, 98926

Phone (509) 925-6947

Enumeration date Jul 25, 2006

Last updated in NPPES May 10, 2010

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD00021680 (WA) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD00021680 (WA) Secondary

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
7010614	Medicaid	WA	-

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 does Timothy O'Brien practice?

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

What is the NPI number for Timothy O'Brien?

The National Provider Identifier (NPI) for Timothy O'Brien is 1770506453, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-10.