Clarence Stephen Denis, OD
- Part D claims, 2024
- 18
- Affiliated sites
- 3
- Medical groups
- 3
- State licenses
- 3
- Year NPI issued
- 2023
- Practice address
- 3300 W 175th St, Hazel Crest, IL 60429
- Practice phone
- Call (773) 588-3090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Charles S Ovitsky
Hazel Crest, Illinois
Find Clarence Denis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Clarence Stephen Denis is an optometrist in Hazel Crest, Illinois
Clarence Denis practices at Charles S Ovitsky in Hazel Crest, Illinois.
Clarence Denis' NPI, 1427822014, was assigned on November 14, 2023. Clarence Denis graduated from Midwestern University College of Dental Medicine, Downers Grove in 2023. Clarence Denis holds Illinois license 46011839.
- NPI
- 1427822014NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183122732
- NPI enumeration date
- November 14, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 588-3090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Clarence Stephen Denis practices at Charles S Ovitsky in Hazel Crest, Illinois
Clarence Denis' primary practice is Charles S Ovitsky, at 3300 W 175th St, Hazel Crest, IL 60429 in Cook County. The practice phone is (773) 588-3090.
- Charles S Ovitsky3300 W 175th St, Hazel Crest, IL 60429 · Cook CountyPhone(773) 588-3090
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Clarence Stephen Denis is affiliated with 4 sites of care and 3 medical groups
Clarence Denis' primary practice is Charles S Ovitsky in Hazel Crest, Illinois. Dmand AI also links Clarence Denis to 3 group practices and clinics and 3 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Clarence Stephen Denis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Clarence Denis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Charles S Ovitsky | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Clarence Stephen Denis is one of 2,194 optometrists in Illinois
Optometrist is Clarence Denis' primary specialty in the NPI Registry, under taxonomy code 152W00000X. Dmand AI has Clarence Denis' licenses on file in 3 states: Illinois, Florida and Indiana.
Specialties and state licenses
- Optometrist, IllinoisPrimary
- Florida license
- Indiana license
Optometrists near Clarence Denis
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Clarence Stephen Denis' patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Clarence Denis' median patient age at 77, with 59% women.
Clarence Denis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women59%
- Men40%
Source: Dmand AI Patient Panel Data
Clarence Stephen Denis wrote 18 Medicare Part D claims in 2024
In 2024, Clarence Denis wrote 18 Medicare Part D claims. 61% of them were for generic drugs.
Clarence Denis' Part D claims by kind of drug, 2024
- Generic11 claims61%
- Brand-name and other7 claims39%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Clarence Stephen Denis takes part in Medicare
Clarence Denis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Clarence Stephen Denis graduated from Midwestern University College of Dental Medicine, Downers Grove
Clarence Denis graduated from Midwestern University College of Dental Medicine, Downers Grove in 2023.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Clarence Stephen Denis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Clarence Stephen Denis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Clarence Stephen Denis' NPI number?
Clarence Stephen Denis' NPI number is 1427822014. It was assigned on November 14, 2023, and it is active in the NPI Registry.
What does Clarence Stephen Denis specialize in?
Clarence Stephen Denis is an optometrist in Hazel Crest, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Clarence Stephen Denis practice?
Clarence Denis practices at 3300 W 175th St, Hazel Crest, IL 60429. Clarence Denis' primary practice is Charles S Ovitsky in Hazel Crest, Illinois. Dmand AI also links Clarence Denis to 3 group practices and clinics and 3 medical groups.
What is Clarence Stephen Denis' office phone number?
The practice phone on file for Clarence Denis is (773) 588-3090.
What is Clarence Stephen Denis' medical license number?
Clarence Denis holds Illinois license 46011839, one of the licenses on file in 3 states.
Which states has Clarence Stephen Denis been licensed in?
Dmand AI has state licenses on file for Clarence Denis in Illinois, Florida and Indiana.
Does Clarence Stephen Denis accept Medicare?
Yes. CMS lists Clarence Denis as accepting Medicare assignment.
Where did Clarence Stephen Denis go to medical school?
Clarence Denis graduated from Midwestern University College of Dental Medicine, Downers Grove in 2023.
How long has Clarence Stephen Denis been practicing?
Clarence Denis graduated from medical school in 2023, 3 years ago.
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