Gerard Stephen O'Connor, M.D.
NPI 1609879873ActiveIndividual· Family Medicine· Chestertown, MD
Family Medicine (M.D.) in Chestertown, Maryland, trained at Georgetown University School of Medicine (class of 1978). 323 Medicare patients in 2024, $32,478 paid; nearly all of their 408 Part D prescriptions were generic (92%). Astrazeneca Pharmaceuticals LP reported $49.78 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1609879873 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 23, 2005 |
| Last updated in NPPES | Jun 5, 2023 |
| Certified by provider | Jun 5, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | D0030368 | MD |
| Specialist | 174400000X | D0030368 | MD |
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 - General Surgery (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 323 |
|---|---|
| Services billed | 598 across 56 procedure codes |
| Paid by Medicare | $32,478 |
Part D prescriptions in 2024
| Prescriptions (claims) | 408 · 465 30-day fills |
|---|---|
| Patients | 235 |
| Total drug cost | $11,917 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | General Surgery |
Medical group
- Eastern Shore Urgent Care LLCChestertown, MD · 9 clinicians
Hospital affiliation
- University of MD Shore Medical Ctr at ChestertownChestertown, MD
Industry payments (Open Payments)
- 2025$49.78 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $49.78 | 2 |
What the 2025 payments were for
- Food and Beverage$49.78 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 family medicine physicians in Chestertown · All family medicine physicians in Maryland