Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Omar Calvillo Martinez
Dental Hygienist in Yuma, AZ · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659977940
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Registry record
Entity type Individual (Type 1)
Name Omar Calvillo Martinez
Sex Male
Practice address 1175 Hart St, Yuma, AZ, 85369
Phone (909) 927-2831
Enumeration date Dec 10, 2020
Last updated in NPPES Dec 10, 2020
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
How do I verify Omar Calvillo Martinez's NPI record?
Cross-check NPI 1659977940 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1659977940 active?
Yes, as of the latest NPPES snapshot, NPI 1659977940 is active (record last updated 2020-12-10).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-10.