James A. Duncan, DDS
- Part D claims, 2024
- 30
- Industry payments
- $25
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 240 Reliant Dr, Portland, TX 78374
- Practice phone
- Call (361) 643-3030
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Duncan Dental Studio
Physician office · Portland, Texas
Find James 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.
James A. Duncan is a general practice dentistry in Portland, Texas
James Duncan practices at Duncan Dental Studio in Portland, Texas.
James Duncan's NPI, 1609081488, was assigned on May 14, 2007. James Duncan holds Texas license 18635.
- NPI
- 1609081488NPI Registry (opens in a new tab)
- NPI enumeration date
- May 14, 2007
- NPI status
- Active
- Practice phone
- (361) 643-3030
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
James A. Duncan practices at 2 locations in Portland, Texas
James Duncan's primary practice is Duncan Dental Studio, at 240 Reliant Dr, Portland, TX 78374. The practice phone is (361) 643-3030. The NPI Registry lists James Duncan's practice address as 1776 Billy G Webb, Portland, TX 78374.
- Duncan Dental StudioPrimary240 Reliant Dr, Portland, TX 78374Phone(361) 643-3030
- NPI Registry address1776 Billy G Webb, Portland, TX 78374 · San Patricio County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
James A. Duncan is affiliated with 1 site of care
James Duncan's primary practice is Duncan Dental Studio in Portland, Texas.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at James A. Duncan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where James Duncan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Duncan Dental Studio | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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James A. Duncan is one of 4,300 general practice dentistrys in Texas
General practice is James Duncan's primary specialty in the NPI Registry, under taxonomy code 1223G0001X. James Duncan is licensed in Texas.
Specialties and state licenses
- General practice dentistry, TexasPrimary
General practice dentistrys near James Duncan
Counts of general practice dentistrys 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
James A. Duncan's patients have a median age of 80
Across all payers, Dmand AI patient panel data puts James Duncan's median patient age at 80, with 100% women.
James 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 80
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
James A. Duncan wrote 30 Medicare Part D claims in 2024
In 2024, James Duncan wrote 30 Medicare Part D claims for 20 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in James Duncan's Part D claims, 2024
- Antibiotics73%22 of 30 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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James A. Duncan received $25 in industry payments in 2025
CMS Open Payments shows 1 general payment to James Duncan from 1 drug or device company in 2025. Education make up the largest share, 100% of the total. Align Technology, Inc. paid the most, $25.
Companies that paid James 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
Sources for James A. 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 Affiliation DataDmand AI Practice 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 James A. 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 James A. Duncan's NPI number?
James A. Duncan's NPI number is 1609081488. It was assigned on May 14, 2007, and it is active in the NPI Registry.
What does James A. Duncan specialize in?
James A. Duncan is a general practice dentistry in Portland, Texas. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does James A. Duncan practice?
James Duncan practices at 240 Reliant Dr, Portland, TX 78374. James Duncan also practices at 1776 Billy G Webb, Portland, TX 78374. James Duncan's primary practice is Duncan Dental Studio in Portland, Texas.
What is James A. Duncan's office phone number?
The practice phone on file for James Duncan is (361) 643-3030.
What is James A. Duncan's medical license number?
James Duncan holds Texas license 18635.
Has James A. Duncan received payments from drug or device companies?
CMS Open Payments shows $25 in general payments to James Duncan from 1 company from 2025 to 2025. The largest total came from Align Technology, Inc.
How long has James A. Duncan been practicing?
James Duncan's NPI was assigned in 2007.
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