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

Dr. Gerald W Koskinen, OD

Individual provider Optometrist · NPI 1780733477

Dr. Gerald W Koskinen, OD is an Optometry in East Troy, Wisconsin. Graduated from Illinois College of Optometry at Chicago in 1987, 39 years ago. Practices with Koskinen Eye Clinic, LLC, a 2-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
39
Trained at
Illinois College of Optometry at Chicago
Licensed in
WI
In the registry since
2007
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

3278 W Main St
East Troy, WI 53120-0165
Phone: (262) 642-9719
Fax: (262) 642-2228
Show map & directions

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 2184 (WI)

Record details

NPI number1780733477
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedJanuary 10, 2007
Last updated in NPPESJanuary 28, 2009

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Graduated 1987 (39 years in practice)
Group practice Koskinen Eye Clinic, Llc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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