Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Dennis E Dettmann, OD

Individual provider Optometrist · NPI 1609877455

Dr. Dennis E Dettmann, OD is registered under Optometry in Plainfield, Illinois. Graduated from Illinois College of Optometry at Chicago in 1978, 48 years ago. Practices with Rosin Optical Co Inc, a 51-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
48
Trained at
Illinois College of Optometry at Chicago
Licensed in
IL
In the registry since
2005
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

21219 Silktree Cir
Plainfield, IL 60544-9359
Phone: (630) 257-6493
Fax: (630) 243-6293
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 046007054 (IL)

Record details

NPI number1609877455
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedAugust 2, 2005
Last updated in NPPESDecember 13, 2024
Certification dateDecember 13, 2024

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Graduated 1978 (48 years in practice)
Group practice Rosin Optical Co Inc — 51 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients309
Services billed 674 a service is one billed item, such as a visit, a test or a procedure
Average patient age83

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Rosin Optical Co Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 51 clinicians in the practice; 12 are shown here.

Other providers in Plainfield