Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Luis Antonio Guillen Jr., PARAMEDIC
Paramedic in San Antonio, TX · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861173684
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Registry record
Entity type Individual (Type 1)
Name Luis Antonio Guillen Jr.
Credential PARAMEDIC
Sex Male
Practice address 9702 Ball St, San Antonio, TX, 78217
Phone (956) 605-8471
Enumeration date Jul 25, 2023
Last updated in NPPES Jul 25, 2023
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
What is the NPI number for Luis Guillen?
The National Provider Identifier (NPI) for Luis Guillen is 1861173684, a Type 1 (individual) record in the CMS NPPES registry.
Where does Luis Guillen practice?
The practice location on file with NPPES is in San Antonio, TX. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-25.