Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Cornelius Adolphus Nicholson, DDS

Orthodontics and Dentofacial Orthopedics Dentistry in Seattle, WA · enumerated 2006 · practices at Cornelius A. Nicholson.

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

National Provider Identifier

1528131901

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Registry record

Entity type Individual (Type 1)

Name Dr. Cornelius Adolphus Nicholson

Credential DDS

Sex Male

Practice address 2815 S Mcclellan St, Seattle, WA, 98144

Phone (206) 722-5000

Fax (206) 721-1428

Enumeration date Nov 15, 2006

Last updated in NPPES May 2, 2018

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 6379 (WA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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

Is NPI 1528131901 active?

Yes, as of the latest NPPES snapshot, NPI 1528131901 is active (record last updated 2018-05-02).

How do I verify Cornelius Nicholson's NPI record?

Cross-check NPI 1528131901 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Cornelius A. Nicholson Dental Clinic/Center · Seattle, WA NPI 1528153343

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-02.