Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ruth C Olson, PHARMD
Pharmacist in Denver, CO · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861227373
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Registry record
Entity type Individual (Type 1)
Name Ruth C Olson
Credential PHARMD
Sex Female
Practice address 1200 Madison St, Denver, CO, 80206
Phone (303) 388-3679
Enumeration date Sep 4, 2024
Last updated in NPPES Apr 14, 2026
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD 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.
Frequently asked questions
Is NPI 1861227373 active?
Yes, as of the latest NPPES snapshot, NPI 1861227373 is active (record last updated 2026-04-14).
How do I verify Ruth Olson's NPI record?
Cross-check NPI 1861227373 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
Browse all → 1200 Madison Sreet Inc Community/Retail Pharmacy · Denver, CO NPI 1649215864 R and Z Holdings Community/Retail Pharmacy · Denver, CO NPI 1588962302 Chris Holmes Hearing Instrument Specialist · Denver, CO NPI 1396221214 Kristin Holmes Pharmacist · Denver, CO NPI 1750907705 Capitol Heights Medical Inc Internal Medicine Physician · Denver, CO NPI 1689382053 Carly Gecan Pharmacist · Denver, CO NPI 1083496731
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-14.