Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. CHARLES A SIMPSON D.C.
NPI 1790747939
Chiropractor - Orthopedic in Cornelius, OR

Active since April 04, 2006
3990 SW LAFOLLETT RD, CORNELIUS, OR 97113(503) 359-8970 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Charles A Simpson D.c. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHARLES A SIMPSON D.C. (NPI 1790747939) is an individual orthopedic provider in Cornelius, Oregon, licensed in Oregon (1421) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1790747939
Entity TypeIndividualMale
Primary Taxonomy111NX0800X
Provider Legal NameDR. CHARLES A SIMPSONCredential: D.C.
Location Address3990 SW LAFOLLETT RDCornelius, OR 97113-6037
Mailing Address3990 Sw Lafollett RdCornelius, OR 97113-6037 · (503) 359-8970
Sole ProprietorNo
Enumeration DateApril 4, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1790747939 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyChiropractor · OrthopedicChiropractic Providers
Taxonomy Code111NX0800X
License Licensed in OR · 1421
Definition
Chiropractic Orthopedics/Neuromusculoskeletal Medicine is defined as that branch of chiropractic medicine that includes the continued acquisition of knowledge relative to both normal functions and diseases of the human body as they relate to the bones, joints, capsules, discs, muscles, ligaments, tendons, their complete neurological and vascular components, referred organ systems and contiguous tissues. This also includes the development and perfection of skills relative to health maintenance when such exists and when not, the investigations, historical review, physical detection, correlative diagnosis development and complete management of any disorder within the bounds defined herein. Also necessary is the delivery of the combined knowledge and skill on a primary basis to patients who both need and desire this service to the eventual outcome of remissions, whenever resolution is not readily achievable. In addition the certified chiropractic orthopedist/neuromusculoskeletal medicine specialist provides consultation services at the request of other qualified doctors seeking assistance in the care of their patients. The chiropractic orthopedist/neuromusculoskeletal medicine specialist may also engage in the teaching and or research of subjects and materials relevant to pursuing the quest for knowledge in the ever changing field of the orthopedic specialty.
3990 SW LAFOLLETT RD, Cornelius, OR 97113

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Charles Simpson's NPI number?

The NPI number for Charles Simpson is 1790747939. It was assigned to this individual provider in the NPPES registry on April 4, 2006.

Where is Charles Simpson located?

Charles Simpson practices at 3990 SW Lafollett Rd, Cornelius, OR 97113. The listed phone number is (503) 359-8970.

What is Charles Simpson's specialty?

The primary specialty registered for this NPI is Chiropractor, specializing in Orthopedic, with taxonomy code 111NX0800X.

When was this NPI record last updated?

The NPPES record for Charles Simpson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.