Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Kirchner, CPO
Prosthetist in San Antonio, TX · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1710256953
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Registry record
Entity type Individual (Type 1)
Name Mark Kirchner
Credential CPO
Sex Male
Practice address 4319 Medical Dr Ste 106, San Antonio, TX, 78229
Phone (210) 614-9222
Fax (210) 914-9333
Enumeration date Dec 16, 2011
Last updated in NPPES Dec 22, 2011
Taxonomy & licenses
222Z00000X Orthotist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary
224P00000X Prosthetist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary
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 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.
What specialty is Mark Kirchner?
Mark Kirchner is registered in NPPES with the primary taxonomy of Prosthetist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-22.