NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John C Blackenburg Od LLC

Optometrist in Semmes, AL · enumerated 2010 · authorized official John Blackenburg, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1679896344

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name John C Blackenburg Od LLC
Practice address 7930 Moffett Rd, Semmes, AL, 36575
Fax (251) 645-0723
Enumeration date Mar 9, 2010
Last updated in NPPES Aug 3, 2010

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License S498TA014 (AL) Primary

Authorized official

Name John Blackenburg
Title Owner

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is John C Blackenburg Od LLC located?
The practice location on file with NPPES is in Semmes, AL.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-08-03. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-03.