Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John A. Alexander, OD

Individual provider Optometrist · NPI 1669532289

John A. Alexander, OD is registered under Optometry in Rockford, Illinois. Graduated from Illinois College of Optometry at Chicago in 1999, 27 years ago. Practices with Rockford Health Physicians, a 521-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
27
Trained at
Illinois College of Optometry at Chicago
Licensed in
IL
In the registry since
2006
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

2300 N Rockton Ave
Rockford, IL 61103-3619 Not confirmed with CMS for 16 years — call before visiting
Phone: (815) 971-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 046009167 (IL)

Record details

NPI number1669532289
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedDecember 12, 2006
Last updated in NPPESJanuary 26, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Graduated 1999 (27 years in practice)
Group practice Rockford Health Physicians — 521 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients773
Services billed 1,273 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Rockford Health Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 521 clinicians in the practice; 12 are shown here.

Other providers in Rockford