Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Gialousakis, OD

Individual provider Corneal and Contact Management Optometrist · NPI 1184038606

John Gialousakis, OD is an Optometry in Downers Grove, Illinois. Graduated from State University of New York - State College Optometry in 2014, 12 years ago. Practices with Midwestern University, a 117-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
12
Trained at
State University of New York - State College Optometry
Licensed in
IL
In the registry since
2014
Specialties on file
2
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

3450 Lacey Rd
Downers Grove, IL 60515-5430
Phone: (630) 743-4500
Fax: (630) 743-4537
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 046011186 (IL)
Corneal and Contact Management Optometrist Taxonomy 152WC0802X · Licence 046011186 (IL)

Record details

NPI number1184038606
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedJune 12, 2014
Last updated in NPPESJune 5, 2019
Mailing address3450 Lacey Rd, Downers Grove, IL 60515-5430

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolSTATE UNIVERSITY OF NEW YORK - STATE COLLEGE OPTOMETRY
Graduated 2014 (12 years in practice)
Group practice Midwestern University — 117 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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