Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alex Jon Uhlenhopp
Optometrist in Mason City, IA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578055521
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Registry record
Entity type Individual (Type 1)
Name Alex Jon Uhlenhopp
Sex Male
Practice address 422 S Pierce Ave Ste 1, Mason City, IA, 50401
Phone (641) 424-0780
Fax (641) 424-2345
Enumeration date Jun 5, 2018
Last updated in NPPES Jun 18, 2018
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
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 Alex Uhlenhopp?
Alex Uhlenhopp 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-18.