Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ronald A Hirn, OD
Optometrist in Brownsville, TX · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1962423962
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Registry record
Entity type Individual (Type 1)
Name Ronald A Hirn
Credential OD
Sex Male
Practice address 1058 E Los Ebanos Blvd, Brownsville, TX, 78520
Phone (956) 541-4828
Fax (956) 541-4568
Enumeration date Jul 22, 2006
Last updated in NPPES Oct 30, 2017
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 116466704 | Medicaid | TX | - |
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 specialty is Ronald Hirn?
Ronald Hirn is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Alexander Pradip Sudarshan Ophthalmology Physician · Brownsville, TX NPI 1821093196 Alexander Sudarshan Ophthalmology Physician · Brownsville, TX NPI 1518988625 Carlos Galvan Ophthalmology Physician · Brownsville, TX NPI 1073717633 Alexander P. Sudarshan MD PA Ophthalmology Physician · Brownsville, TX NPI 1295014389
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-10-30.