Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John A. Alexander, OD
Optometrist in Rockford, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669532289
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Registry record
Entity type Individual (Type 1)
Name John A. Alexander
Credential OD
Sex Male
Practice address 2300 N Rockton Ave, Rockford, IL, 61103
Phone (815) 971-2000
Enumeration date Dec 12, 2006
Last updated in NPPES Jan 26, 2010
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 |
|---|---|---|---|
| 46009167 | Medicaid | IL | - |
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 NPI 1669532289 active?
Yes, as of the latest NPPES snapshot, NPI 1669532289 is active (record last updated 2010-01-26).
How do I verify John Alexander's NPI record?
Cross-check NPI 1669532289 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Affiliated Surgeons of Rockford LLC Surgery Physician · Rockford, IL NPI 1851394696 Samuel Appavu Surgery Physician · Rockford, IL NPI 1346243169 Cynthia Bear Surgical Physician Assistant · Rockford, IL NPI 1548266620 Paul Klazura Vascular Surgery Physician · Rockford, IL NPI 1407852551 Joseph Whiteley Plastic and Reconstructive Surgery Physician · Rockford, IL NPI 1043216112 Donald Mccanse Surgery Physician · Rockford, IL NPI 1568468619 Jeffrey Schauer Surgery Physician · Rockford, IL NPI 1427054592 Roger Miller Surgery Physician · Rockford, IL NPI 1912903899
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-26.