Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Derek Samuel Weaver, DO

Family Medicine Physician in Sunnyside, WA · enumerated 2008 · practices at Derek S Weaver Do Pllc.

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

National Provider Identifier

1962660704

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Registry record

Entity type Individual (Type 1)

Name Dr. Derek Samuel Weaver

Credential DO

Sex Male

Practice address 2935 Allen Rd, Sunnyside, WA, 98944

Phone (509) 837-0070

Fax (509) 837-0690

Enumeration date May 29, 2008

Last updated in NPPES Apr 15, 2026

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OP60139736 (WA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
1962660704	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

What specialty is Derek Weaver?

Derek Weaver is registered in NPPES with the primary taxonomy of Family Medicine 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-15.