Katherine Duncan, M.D.
NPI 1407113566ActiveIndividual· Ophthalmology· Towson, MD
Ophthalmology (M.D.) in Towson, Maryland, trained at University of Maryland School of Medicine (class of 2012). In 2024 Medicare paid $283,279 for 1,199 patients, and Part D covered 841 of their prescriptions, 69% of them generic. Amgen Inc. was the largest of 7 companies reporting payments in 2025, $287.34 in all, mostly food and beverage.
Overview
| NPI | 1407113566 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 13, 2012 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | D83693 | MD |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Ophthalmology | 207W00000X | MD456923 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (MD); Practitioner - Ophthalmology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,199 |
|---|---|
| Services billed | 3,398 across 53 procedure codes |
| Paid by Medicare | $283,279 |
Part D prescriptions in 2024
| Prescriptions (claims) | 841 · 1,433 30-day fills |
|---|---|
| Patients | 279 |
| Total drug cost | $57,249 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | University of Maryland School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Ophthalmology |
Medical group
- Greater Baltimore Medical CenterTowson, MD · 354 clinicians
Hospital affiliation
- Greater Baltimore Medical CenterBaltimore, MD
Industry payments (Open Payments)
- 2025$287.34 · 11 payments from 7 companies
- 2024$379.93 · 17 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $123.86 | 4 |
| Sun Pharmaceutical Industries Inc. | $43.03 | 2 |
| Tarsus Pharmaceuticals, Inc. | $39.27 | 1 |
| Bausch & Lomb Americas Inc. | $24.90 | 1 |
| Sight Sciences, Inc. | $19.91 | 1 |
What the 2025 payments were for
- Food and Beverage$287.34 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 32 ophthalmologists in Towson · All ophthalmologists in Maryland