Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy Hayes Massey, M.D.

Orthopaedic Surgery Physician in Kirkland, WA · enumerated 2006.

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

National Provider Identifier

1023088374

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Timothy Hayes Massey

Credential M.D.

Sex Male

Practice address 11821 Ne 128th St, Suite A, Kirkland, WA, 98034

Phone (425) 823-8282

Fax (425) 823-6696

Enumeration date Jan 26, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License MD00030689 (WA) Primary

207XS0117X Orthopaedic Surgery of the Spine Physician Allopathic & Osteopathic Physicians · License MD00030689 (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
48820	Other	WA	DEPT. OF LABOR & INDUSTRI
8154072/7040033	Medicaid	WA	-
MA6448	Other	WA	REGENCE BLUE SHIELD NUMBE

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

What specialty is Timothy Massey?

Timothy Massey is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Washington Orthopedics and Sports Medicine, PC Orthopaedic Surgery of the Spine Physician · Kirkland, WA NPI 1629008081 Theodore Ritter Family Nurse Practitioner · Kirkland, WA NPI 1356430615 Damon Farrington Chiropractor · Kirkland, WA NPI 1093886376 Jason Ketcham Massage Therapist · Kirkland, WA NPI 1487790754 Apple Physical Therapy Ps Durable Medical Equipment & Medical Supplies · Kirkland, WA NPI 1346372976 Nelson Liu Physical Therapist · Kirkland, WA NPI 1689799066 Kristy Weiss Massage Therapist · Kirkland, WA NPI 1972626034 Stephen Bourdeau Massage Therapist · Kirkland, WA NPI 1598980955

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.