Quick answers
- Which hospitals does Allison Hays work at?
- Medicare's official clinician data lists Allison Hays at 4 hospitals: Johns Hopkins Bayview Medical Center, Johns Hopkins Howard County Medical Center, The Johns Hopkins Hospital and University of MD Shore Medical Center at Easton. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Allison Hays see patients?
- Medicare's clinician data lists 2 practice locations, including Baltimore, MD and Middle River, MD. Call before your visit to confirm the address.
- What is Allison Hays's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Allison Hays accept Medicare assignment?
- Medicare's clinician data says Allison Hays may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Allison Hays?
- (410) 955-5000, as listed in official Medicare / NPI Registry data.
- What is Allison Hays's NPI number?
- 1831394394. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Allison Hays works
Medicare's Facility Affiliation Data lists Allison Hays at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Johns Hopkins Bayview Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210029
- Johns Hopkins Howard County Medical CenterColumbia, MD · Acute Care Hospital · CCN 210048
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
- University of MD Shore Medical Center at EastonEaston, MD · Acute Care Hospital · CCN 210037
Practice locations
Addresses where Allison Hays is enrolled with Medicare (CMS data updated 2026-10-02).
- 600 N Wolf StBaltimore, MD 21287 (410) 955‑5000
- 6201 Greenleigh AveMiddle River, MD 21220
Group practices
Medicare enrollment lists Allison Hays as a member of these groups (CMS data updated 2026-10-02).
- Johns Hopkins University2,909 clinicians in the group
- Johns Hopkins University713 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Maryland →
Other cardiologists in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1831394394 |
| 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