Quick answers
- Which hospitals does Cierra O'Neill work at?
- Medicare's official clinician data lists Cierra O'Neill at 4 hospitals: MedStar Franklin Square Medical Center, MedStar Good Samaritan Hospital, MedStar Union Memorial Hospital and Mercy Medical Center Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Cierra O'Neill see patients?
- Medicare's clinician data lists 2 practice locations, including Baltimore, MD. Call before your visit to confirm the address.
- What is Cierra O'Neill's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Cierra O'Neill accept Medicare assignment?
- Yes. Medicare's clinician data says Cierra O'Neill 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 Cierra O'Neill?
- (410) 554-2000, as listed in official Medicare / NPI Registry data.
- What is Cierra O'Neill's NPI number?
- 1679257364. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Cierra O'Neill works
Medicare's Facility Affiliation Data lists Cierra O'Neill 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 Good Samaritan HospitalBaltimore, MD · Acute Care Hospital · CCN 210056
- MedStar Union Memorial HospitalBaltimore, MD · Acute Care Hospital · CCN 210024
- Mercy Medical Center IncBaltimore, MD · Acute Care Hospital · CCN 210008
Practice locations
Addresses where Cierra O'Neill is enrolled with Medicare (CMS data updated 2026-10-02).
- 201 E University PkwyBaltimore, MD 21218 (410) 554‑2000
- 3333 N Calvert StBaltimore, MD 21218 (410) 261‑8500
Group practices
Medicare enrollment lists Cierra O'Neill as a member of these groups (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
- MedStar Heart Institute LLC301 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679257364 |
| 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