Jeffrey Alan Duncan, OD
- Part D claims, 2024
- 54
- Hospital affiliations
- 1
- Industry payments
- $101
- Medical groups
- 6
- State license
- 1
- Practice address
- 111 E 4th St, Alton, IL 62002
- Practice phone
- Call (412) 731-2020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eyes On Regent Square
Eye care practice · Alton, Illinois
Find Jeffrey 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.
Jeffrey Alan Duncan is an optometrist in Alton, Illinois
Jeffrey Duncan practices at Eyes On Regent Square in Alton, Illinois.
Jeffrey Duncan's NPI, 1669432365, was assigned on March 25, 2006. Jeffrey Duncan graduated from Pennsylvania College of Optometry in 1991. Jeffrey Duncan holds Pennsylvania license OE 007276T.
- NPI
- 1669432365NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648524454
- NPI enumeration date
- March 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (412) 731-2020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Jeffrey Alan Duncan practices at Eyes on Regent Square in Alton, Illinois
Jeffrey Duncan's primary practice is Eyes on Regent Square, at 111 E 4th St, Alton, IL 62002. The practice phone is (412) 731-2020.
- Eyes on Regent Square111 E 4th St, Alton, IL 62002Phone(412) 731-2020
Source: Dmand AI Affiliation Data
Jeffrey Alan Duncan is affiliated with 2 sites of care and 6 medical groups
Jeffrey Duncan's primary practice is Eyes On Regent Square in Alton, Illinois. Jeffrey Duncan is also affiliated with Cherokee Indian Hospital Authority. The medical group on file is Fort Defiance Indian Hospital Board, Inc. Dmand AI also links Jeffrey Duncan to 5 more medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Jeffrey Alan Duncan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jeffrey Duncan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eyes On Regent Square | Available with a free account |
| +1 more site and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Jeffrey Alan Duncan is one of 2,194 optometrists in Illinois
Optometrist is Jeffrey Duncan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Jeffrey Duncan is licensed in Pennsylvania.
Specialties and state licenses
- Optometrist, PennsylvaniaPrimary
Optometrists near Jeffrey 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
Jeffrey Alan Duncan's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Jeffrey Duncan's median patient age at 68, with 55% women.
Jeffrey 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 68
Patient panel by sex, all payers
- Women55%
- Men42%
Source: Dmand AI Patient Panel Data
Jeffrey Alan Duncan wrote 54 Medicare Part D claims in 2024
In 2024, Jeffrey Duncan wrote 54 Medicare Part D claims for 20 patients. 65% of them were for generic drugs.
Jeffrey Duncan's Part D claims by kind of drug, 2024
- Generic35 claims65%
- Brand-name19 claims35%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Jeffrey Alan Duncan takes part in Medicare
Jeffrey Duncan 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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Jeffrey Alan Duncan received $101 in industry payments in 2025
CMS Open Payments shows 2 general payments to Jeffrey Duncan from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $101.
Companies that paid Jeffrey 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
Jeffrey Alan Duncan graduated from Pennsylvania College of Optometry
Jeffrey Duncan graduated from Pennsylvania College of Optometry in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Jeffrey Alan 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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 Jeffrey Alan 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 Jeffrey Alan Duncan's NPI number?
Jeffrey Alan Duncan's NPI number is 1669432365. It was assigned on March 25, 2006, and it is active in the NPI Registry.
What does Jeffrey Alan Duncan specialize in?
Jeffrey Alan Duncan is an optometrist in Alton, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Jeffrey Alan Duncan practice?
Jeffrey Duncan practices at 111 E 4th St, Alton, IL 62002. Jeffrey Duncan's primary practice is Eyes On Regent Square in Alton, Illinois. Dmand AI also links Jeffrey Duncan to 5 medical groups.
What is Jeffrey Alan Duncan's office phone number?
The practice phone on file for Jeffrey Duncan is (412) 731-2020.
What is Jeffrey Alan Duncan's medical license number?
Jeffrey Duncan holds Pennsylvania license OE 007276T.
Which hospitals is Jeffrey Alan Duncan affiliated with?
Jeffrey Duncan is affiliated with Cherokee Indian Hospital Authority.
What medical group is Jeffrey Alan Duncan part of?
Jeffrey Duncan is linked to Fort Defiance Indian Hospital Board, Inc. Dmand AI links Jeffrey Duncan to 5 more medical groups.
Does Jeffrey Alan Duncan accept Medicare?
Yes. CMS lists Jeffrey Duncan as accepting Medicare assignment.
Where did Jeffrey Alan Duncan go to medical school?
Jeffrey Duncan graduated from Pennsylvania College of Optometry in 1991.
Has Jeffrey Alan Duncan received payments from drug or device companies?
CMS Open Payments shows $101 in general payments to Jeffrey Duncan from 1 company from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Jeffrey Alan Duncan been practicing?
Jeffrey Duncan graduated from medical school in 1991, 35 years ago.
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