Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Louis P Mcdonald
Other Technician in San Antonio, TX · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538432273
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Louis P Mcdonald
Sex Male
Practice address 1116 E Houston St, San Antonio, TX, 78205
Phone (210) 226-1482
Fax (210) 299-1670
Enumeration date Feb 10, 2012
Last updated in NPPES Feb 10, 2012
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
Where does Louis Mcdonald practice?
The practice location on file with NPPES is in San Antonio, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Louis Mcdonald?
The National Provider Identifier (NPI) for Louis Mcdonald is 1538432273, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-10.