Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Ryan S. Mckinnon, MD-OPTHALMOLOGY
Ophthalmology Physician in Yuma, AZ · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821087859
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mr. Ryan S. Mckinnon
Credential MD-OPTHALMOLOGY
Sex Male
Practice address 2270 S Ridgeview Dr Ste 303, Yuma, AZ, 85364
Phone (928) 336-2575
Enumeration date Oct 21, 2005
Last updated in NPPES Jan 2, 2025
Taxonomy & licenses
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 1821087859 active?
Yes, as of the latest NPPES snapshot, NPI 1821087859 is active (record last updated 2025-01-02).
How do I verify Ryan Mckinnon's NPI record?
Cross-check NPI 1821087859 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 →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-02.