Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cornelius W Vanniel, MD

Pediatrics Physician in Seattle, WA · enumerated 2007.

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

National Provider Identifier

1023163102

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Registry record

Entity type Individual (Type 1)

Name Cornelius W Vanniel

Credential MD

Sex Male

Practice address 8720 14th Ave S, Seattle, WA, 98108

Phone (206) 762-3730

Fax (206) 764-0523

Enumeration date Jan 25, 2007

Last updated in NPPES Nov 27, 2023

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD00037681 (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
1000679	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 is the NPI number for Cornelius Vanniel?

The National Provider Identifier (NPI) for Cornelius Vanniel is 1023163102, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cornelius Vanniel practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-27.