Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Dena Marie Nichols, R.N.

Registered Nurse in Boulder, CO · enumerated 2012.

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

National Provider Identifier

1821363565

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Registry record

Entity type Individual (Type 1)

Name Mrs. Dena Marie Nichols

Credential R.N.

Sex Female

Practice address 580 Mohawk Dr, Boulder, CO, 80303

Phone (303) 554-5020

Enumeration date Mar 13, 2012

Last updated in NPPES Mar 13, 2012

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 185649 (CO) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1821363565 active?

Yes, as of the latest NPPES snapshot, NPI 1821363565 is active (record last updated 2012-03-13).

How do I verify Dena Nichols's NPI record?

Cross-check NPI 1821363565 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Eileen Bickford Family Medicine Physician · Boulder, CO NPI 1376529941 Nicole Silver Internal Medicine Physician · Boulder, CO NPI 1184642209 William Hazell Medical Physician Assistant · Boulder, CO NPI 1467463729 Kaiser Foundation Health Plan of Colorado Multi-Specialty Clinic/Center · Boulder, CO NPI 1073627360 Xochitl Ashpole Physical Therapist · Boulder, CO NPI 1487768099 Scott Clemensen Family Medicine Physician · Boulder, CO NPI 1104932888 Emily Warm Pediatrics Physician · Boulder, CO NPI 1073623856 Sepeideh Nouhi Family Medicine Physician · Boulder, CO NPI 1689757213

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-13.