Quick answers
- Which hospitals does Margaret Keane work at?
- Medicare's official clinician data lists Margaret Keane at 2 hospitals: Sibley Memorial Hospital and The Johns Hopkins Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Margaret Keane see patients?
- Medicare's clinician data lists 8 practice locations, including Washington, DC, Baltimore, MD and Bethesda, MD. Call before your visit to confirm the address.
- What is Margaret Keane's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Margaret Keane accept Medicare assignment?
- Medicare's clinician data says Margaret Keane may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Margaret Keane offer telehealth?
- Medicare's clinician data says Margaret Keane offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Margaret Keane?
- (202) 537-4277, as listed in official Medicare / NPI Registry data.
- What is Margaret Keane's NPI number?
- 1790318657. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Margaret Keane works
Medicare's Facility Affiliation Data lists Margaret Keane at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sibley Memorial HospitalWashington, DC · Acute Care Hospital · CCN 090005
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
Practice locations
Addresses where Margaret Keane is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 5215 Loughboro Rd NW, Suite 330Washington, DC 20016 (202) 537‑4277
- 5225 Loughboro Rd NW, Suite 330Washington, DC 20016 (202) 537‑4000
- 5255 Loughboro Rd NWWashington, DC 20016 (202) 537‑4000
- 5255 Loughboro Road NW, Sibley Memorial HospitalWashington, DC 20016 (202) 660‑6500
- 5601 Lloch Raven BlvdBaltimore, MD 21239 (443) 444‑4714
Group practices
Medicare enrollment lists Margaret Keane 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
- Gastroenterologyprimary
- Internal Medicinealso
Find other Gastroenterology doctors in District of Columbia →
Other gastroenterologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1790318657 |
| 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