Shannon Courtney O'Connor, M.D.
NPI 1972760452ActiveIndividual· Internal Medicine, Hematology & Oncology· Rockville, MD
Internal Medicine, Hematology & Oncology (M.D.) with Maryland Oncology Hematology PA, practicing in Rockville, Maryland. In 2024 Medicare paid $2,086,014 for 699 patients, and Part D covered 565 of their prescriptions, 75% of them generic. Caris Mpi, Inc. was the largest of 11 companies reporting payments in 2025, $566.12 in all, mostly food and beverage. Lists Adventist Healthcare Shady Grove Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1972760452 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 21, 2008 |
| Last updated in NPPES | Dec 21, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | D0073109 | 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 - Hematology/Oncology (DC); Practitioner - Hematology/Oncology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 699 |
|---|---|
| Services billed | 117,970 across 164 procedure codes |
| Paid by Medicare | $2,086,014 |
Part D prescriptions in 2024
| Prescriptions (claims) | 565 · 1,247 30-day fills |
|---|---|
| Patients | 135 |
| Total drug cost | $1,309,108 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Maryland Oncology Hematology PAColumbia, MD · 104 clinicians
Hospital affiliations
- Adventist Healthcare Shady Grove Medical CenterRockville, MD
- Holy Cross Germantown HospitalGermantown, MD
- Suburban HospitalBethesda, MD
Industry payments (Open Payments)
- 2025$566.12 · 18 payments from 11 companies
- 2024$373.38 · 10 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Caris Mpi, Inc. | $123.82 | 1 |
| Glaxosmithkline, LLC. | $104.49 | 3 |
| Merck Sharp & Dohme LLC | $83.42 | 3 |
| Pfizer Inc. | $77.20 | 3 |
| Novartis Pharmaceuticals Corporation | $48.22 | 2 |
What the 2025 payments were for
- Food and Beverage$566.12 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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