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

Dr. Clarence Stephen Denis, OD

Individual provider Optometrist · NPI 1427822014

Dr. Clarence Stephen Denis, OD is an Optometry in Chicago, Illinois. Graduated from Midwestern University College of Dental Medicine, Downers Grove in 2023, 3 years ago. Practices with Charles S Ovitsky PC, a 14-clinician group and accepts Medicare assignment. Licensed in Florida, Illinois and Indiana.

Years since qualifying
3
Trained at
Midwestern University College of Dental Medicine, Downers Grove
Licensed in
FL, IL, IN
In the registry since
2023
Specialties on file
3
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

3500 W Peterson Ave Ste 401
Chicago, IL 60659-3307
Phone: (773) 588-3090
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 46011839 (IL)
Optometrist Taxonomy 152W00000X · Licence 18004459A (IN)
Optometrist Taxonomy 152W00000X · Licence OPC6780 (FL)

Record details

NPI number1427822014
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedNovember 14, 2023
Last updated in NPPESSeptember 30, 2025
Certification dateSeptember 30, 2025

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolMIDWESTERN UNIVERSITY COLLEGE OF DENTAL MEDICINE, DOWNERS GROVE
Graduated 2023 (3 years in practice)
Group practice Charles S Ovitsky Pc — 14 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Chicago