Dr. Charles A Simpson, D.C.

Dr. Charles A Simpson is a Orthopedic Chiropractor provider (Chiropractor) practicing in Cornelius, OR, registered in the NPPES registry with NPI 1790747939 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum

NPI	1790747939
Entity type	Individual (Type 1)
Name	Dr. Charles A Simpson
Credential	D.C.
Sex	Male
Practice address	3990 SW LAFOLLETT RD, Cornelius, OR, 97113
Phone	5033598970
Enumeration date	2006-04-04
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
111NX0800X	Orthopedic Chiropractor	Primary	1421	OR

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details

Provider: Charles Simpson, D.C.
NPI: 1790747939
Taxonomy: 111NX0800X (Orthopedic Chiropractor)
Address: 3990 SW LAFOLLETT RD, Cornelius, OR, 97113

Verify this record

Cross-check NPI 1790747939 against the authoritative CMS record: view Dr. Charles A Simpson on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where does Charles Simpson practice?

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

What is the NPI number for Charles Simpson?

The National Provider Identifier (NPI) for Charles Simpson is 1790747939, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.