Mark Douglas Duncan, M.D.
NPI 1225079593ActiveIndividual· Surgery· Baltimore, MD
Surgery (M.D.) in Baltimore, Maryland, trained at Mayo Medical School (class of 1987). Medicare paid $71,125 for services to 116 patients in 2024. Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $62.72 in all, mostly food and beverage.
Overview
| NPI | 1225079593 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 9, 2006 |
| Last updated in NPPES | Feb 6, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | D51208 | MD |
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 - General Surgery (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 116 |
|---|---|
| Services billed | 240 across 53 procedure codes |
| Paid by Medicare | $71,125 |
Education and affiliations
| Medical school | Mayo Medical School |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Johns Hopkins UniversityBaltimore, MD · 2,909 clinicians
Hospital affiliations
- Johns Hopkins Bayview Medical CenterBaltimore, MD
- Johns Hopkins Hospital, theBaltimore, MD
Industry payments (Open Payments)
- 2025$62.72 · 2 payments from 2 companies
- 2024$10.62 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $55.22 | 1 |
| Intuitive Surgical, Inc. | $7.50 | 1 |
What the 2025 payments were for
- Food and Beverage$62.72 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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