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

Dr. Chih Jen Wang, OD

Individual provider Optometrist · NPI 1861443079

Dr. Chih Jen Wang, OD is an Optometry in O Fallon, Illinois. Graduated from Indiana University - School of Optometry in 2003, 23 years ago. Practices with Nucrown, LLC, a 22-clinician group and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
23
Trained at
Indiana University - School of Optometry
Licensed in
IL, MO
In the registry since
2006
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

1560 W US Highway 50
O Fallon, IL 62269-1619
Phone: (618) 397-6575
Fax: (800) 432-6004
Show map & directions

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 046-009615 (IL)
Optometrist Taxonomy 152W00000X · Licence 2004001752 (MO)

Record details

NPI number1861443079
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedMay 12, 2006
Last updated in NPPESFebruary 14, 2014

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolINDIANA UNIVERSITY - SCHOOL OF OPTOMETRY
Graduated 2003 (23 years in practice)
Group practice Nucrown, Llc — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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