Quick answers
- Which hospitals does Erin K. Oneill work at?
- Medicare's official clinician data lists Erin K. Oneill at 5 hospitals: MedStar Franklin Square Medical Center, MedStar Montgomery Medical Center, MedStar Saint Mary's Hospital, MedStar Southern Maryland Hospital Center and MedStar Washington Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Erin K. Oneill see patients?
- Medicare's clinician data lists 13 practice locations, including Washington, DC, Bel Air, MD and Mitchellville, MD. Call before your visit to confirm the address.
- What is Erin K. Oneill's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Erin K. Oneill accept Medicare assignment?
- Yes. Medicare's clinician data says Erin K. Oneill accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Erin K. Oneill?
- (202) 877-7000, as listed in official Medicare / NPI Registry data.
- What is Erin K. Oneill's NPI number?
- 1376749416. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Erin K. Oneill works
Medicare's Facility Affiliation Data lists Erin K. Oneill at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MedStar Franklin Square Medical CenterRosedale, MD · Acute Care Hospital · CCN 210015
- MedStar Montgomery Medical CenterOlney, MD · Acute Care Hospital · CCN 210018
- MedStar Saint Mary's HospitalLeonardtown, MD · Acute Care Hospital · CCN 210028
- MedStar Southern Maryland Hospital CenterClinton, MD · Acute Care Hospital · CCN 210062
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · CCN 090011
Practice locations
Addresses where Erin K. Oneill is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 13; the Medicare profile lists all.
- 110 Irving St NWWashington, DC 20010 (202) 877‑7000
- 12 Medstar BlvdBel Air, MD 21015 (443) 625‑5430
- 12158 Central Ave, Suite 100Mitchellville, MD 20721 (301) 430‑2750
- 13950 Brandywine RdBrandywine, MD 20613 (240) 546‑3000
- 18101 Prince Philip DrOlney, MD 20832 (301) 215‑9420
Group practices
Medicare enrollment lists Erin K. Oneill as a member of these groups (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
- MedStar Medical Group - Southern Maryland LLC245 clinicians in the group
- Physician Imaging of Washington Hospital Center LLC104 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Find other Diagnostic Radiology doctors in District of Columbia →
Other radiologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376749416 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians