Robert William Duncan, OD
- Medicare patients, 2024
- 101
- Part D claims, 2024
- 157
- Industry payments
- $46
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 341 N Creek Dr, Festus, MO 63028
- Practice phone
- Call (636) 200-4393
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Clarkson Eyecare
Festus, Missouri
Find Robert Duncan's 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.
Robert William Duncan is an optometrist in Festus, Missouri
Robert Duncan practices at Clarkson Eyecare in Festus, Missouri.
Robert Duncan's NPI, 1700402500, was assigned on June 18, 2020. Robert Duncan graduated from Southern College of Optometry in 2020. Robert Duncan holds Missouri license 2020014886.
- NPI
- 1700402500NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204258213
- NPI enumeration date
- June 18, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (636) 200-4393
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Robert William Duncan practices at Clarkson Eyecare in Festus, Missouri
Robert Duncan's primary practice is Clarkson Eyecare, at 341 N Creek Dr, Festus, MO 63028 in Jefferson County. The practice phone is (636) 200-4393.
- Clarkson Eyecare341 N Creek Dr, Festus, MO 63028 · Jefferson CountyPhone(636) 200-4393
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Robert William Duncan is affiliated with 2 sites of care and 1 medical group
Robert Duncan's primary practice is Clarkson Eyecare in Festus, Missouri. Dmand AI also links Robert Duncan to 1 group practice or clinic and 1 medical group, 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 Robert William Duncan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Robert Duncan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Clarkson Eyecare | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Robert William Duncan is one of 866 optometrists in Missouri
Optometrist is Robert Duncan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Robert Duncan is licensed in Missouri.
Specialties and state licenses
- Optometrist, MissouriPrimary
Optometrists near Robert Duncan
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
Robert William Duncan treated 101 Medicare patients in 2024, average age 74
CMS counts 101 Medicare patients who saw Robert Duncan in 2024. The largest group is 65 to 74, with 60 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.15, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Robert Duncan's median patient age at 54, with 58% women.
Robert Duncan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Robert Duncan's Medicare patients by sex, 2024
- Women6059%
- Men4141%
Chronic conditions among Robert Duncan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes36%
- Ischemic heart disease34%
- Mood disorders28%
- Anxiety27%
- Chronic kidney disease25%
Share of Medicare patients with each condition. A patient can have several.
Robert Duncan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Robert William Duncan wrote 157 Medicare Part D claims in 2024
In 2024, Robert Duncan wrote 157 Medicare Part D claims for 58 patients. 50% of them were for generic drugs.
Robert Duncan's Part D claims by kind of drug, 2024
- Generic78 claims50%
- Brand-name79 claims50%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Robert William Duncan takes part in Medicare
Robert Duncan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Robert William Duncan received $46 in industry payments in 2025
CMS Open Payments shows 2 general payments to Robert Duncan from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $23.
Companies that paid Robert Duncan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Robert William Duncan graduated from Southern College of Optometry
Robert Duncan graduated from Southern College of Optometry in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Robert William Duncan'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Robert William Duncan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Robert William Duncan's NPI number?
Robert William Duncan's NPI number is 1700402500. It was assigned on June 18, 2020, and it is active in the NPI Registry.
What does Robert William Duncan specialize in?
Robert William Duncan is an optometrist in Festus, Missouri. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Robert William Duncan practice?
Robert Duncan practices at 341 N Creek Dr, Festus, MO 63028. Robert Duncan's primary practice is Clarkson Eyecare in Festus, Missouri. Dmand AI also links Robert Duncan to 1 group practice or clinic and 1 medical group.
What is Robert William Duncan's office phone number?
The practice phone on file for Robert Duncan is (636) 200-4393.
What is Robert William Duncan's medical license number?
Robert Duncan holds Missouri license 2020014886.
Does Robert William Duncan accept Medicare?
Yes. CMS lists Robert Duncan as accepting Medicare assignment.
How many Medicare patients does Robert William Duncan see?
CMS counts 101 Medicare patients who saw Robert Duncan in 2024, with an average age of 74.
Where did Robert William Duncan go to medical school?
Robert Duncan graduated from Southern College of Optometry in 2020.
Has Robert William Duncan received payments from drug or device companies?
CMS Open Payments shows $46 in general payments to Robert Duncan from 2 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Robert William Duncan been practicing?
Robert Duncan graduated from medical school in 2020, 6 years ago.
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