Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Alsup, O.D.
Optometrist in Corpus Christi, TX · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558700161
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary Alsup
Credential O.D.
Sex Female
Practice address 6101 Saratoga Blvd, Corpus Christi, TX, 78414
Phone (361) 929-5319
Fax (844) 272-9788
Enumeration date Jun 17, 2013
Last updated in NPPES Nov 3, 2022
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 |
|---|---|---|---|
| 4259723 | 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
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 Mary Alsup?
Mary Alsup 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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-03.