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

Dr. Thomas R Benthien, OD

Individual provider Optometrist · NPI 1437427127

Dr. Thomas R Benthien, OD is an Optometrist in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2011
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

112 W Monroe St
Chicago, IL 60603-1607
Phone: (312) 236-6460
Fax: (312) 236-8082
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 046.007474 (IL)

Record details

NPI number1437427127
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedDecember 8, 2011
Last updated in NPPESAugust 6, 2016
Mailing address112 W Monroe St, Chicago, IL 60603-1607

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