Mark O'Brien Peeler, MD
NPI 1316931421ActiveIndividual· Surgery· Annapolis, MD
Surgery (MD) in Annapolis, Maryland, trained at Johns Hopkins University School of Medicine (class of 1992). 1,296 Medicare patients in 2024, $461,332 paid; nearly all of their 58 Part D prescriptions were generic (93%). W. L. Gore & Associates, Inc. was the largest of 3 companies reporting payments in 2025, $527.68 in all, mostly food and beverage.
Overview
| NPI | 1316931421 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Sep 2, 2005 |
| Last updated in NPPES | Jan 24, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | D0056208 | 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 - Vascular Surgery (DC); Practitioner - Vascular Surgery (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,296 |
|---|---|
| Services billed | 3,193 across 123 procedure codes |
| Paid by Medicare | $461,332 |
Part D prescriptions in 2024
| Prescriptions (claims) | 58 · 106 30-day fills |
|---|---|
| Patients | 44 |
| Total drug cost | $6,120 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Vascular Surgery |
| Telehealth | Offers telehealth |
Medical groups
- Medstar Medical Group II LLCWashington, DC · 3,767 clinicians
- Medstar Heart Institute LLCBaltimore, MD · 301 clinicians
Hospital affiliations
Industry payments (Open Payments)
- 2025$527.68 · 5 payments from 3 companies
- 2024$424.23 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| W. L. Gore & Associates, Inc. | $356.53 | 3 |
| Penumbra, Inc. | $94.00 | 1 |
| Boston Scientific Corporation | $77.15 | 1 |
What the 2025 payments were for
- Food and Beverage$450.53 · 4 payments
- Travel and Lodging$77.15 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Surgery providers in Annapolis
- 1942278882
- 1528395159
- 1134406929
- 1952669798
- 1285449876
- 1003883216
- 1164740981
- 1225832363
- 1295006922
- 1386445245
- 1649248485
- 1700705571