Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Charles Kelley Simpson, M.D.

Radiation Oncology Physician in Lafayette, CO · enumerated 2006.

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

National Provider Identifier

1871527754

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Charles Kelley Simpson

Credential M.D.

Sex Male

Practice address 120 Old Laramie Trl E, Lafayette, CO, 80026

Phone (303) 926-9800

Fax (303) 926-9891

Enumeration date Jul 10, 2006

Last updated in NPPES Dec 6, 2022

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 28468 (CO) 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
05854776	Medicaid	CO	-
01284686	Medicaid	CO	-
021766	Other	CO	KAISER COMMERCIAL NUMBER
840900897	Other	CO	TAX ID
841537239	Other	CO	TAX ID

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

How do I verify Charles Simpson's NPI record?

Cross-check NPI 1871527754 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1871527754 active?

Yes, as of the latest NPPES snapshot, NPI 1871527754 is active (record last updated 2022-12-06).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-06.