David K. Duncan, MD
NPI 1215116975ActiveIndividual· Dermatology· Norman, OK
Dermatology (MD) in Norman, Oklahoma, trained at University of Oklahoma College of Medicine (class of 1990). 2,273 Medicare patients in 2024, $428,284 paid; nearly all of their 1,911 Part D prescriptions were generic (96%). Janssen Biotech, Inc. was the largest of 15 companies reporting payments in 2025, $1,589 in all, mostly food and beverage.
Overview
| NPI | 1215116975 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 30, 2007 |
| Last updated in NPPES | Nov 10, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 17723 | OK |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Dermatology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,273 |
|---|---|
| Services billed | 17,568 across 52 procedure codes |
| Paid by Medicare | $428,284 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,911 · 2,132 30-day fills |
|---|---|
| Patients | 726 |
| Total drug cost | $504,826 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Dermatology |
Hospital affiliation
- Norman RegionalNorman, OK
Industry payments (Open Payments)
- 2025$1,589 · 84 payments from 15 companies
- 2024$1,805 · 110 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $321.91 | 10 |
| Regeneron Healthcare Solutions, Inc. | $285.42 | 9 |
| Genzyme Corporation | $224.46 | 11 |
| Leo Pharma Inc. | $178.39 | 14 |
| Galderma Laboratories, L.P. | $171.96 | 16 |
What the 2025 payments were for
- Food and Beverage$1,490 · 83 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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