Quick answers
- Which hospitals does Stephen Greco work at?
- Medicare's official clinician data lists Stephen Greco at 4 hospitals: Sibley Memorial Hospital, Suburban Hospital, The Johns Hopkins Hospital and Tidalhealth Peninsula Regional, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen Greco see patients?
- Medicare's clinician data lists 7 practice locations, including Washington, DC, Baltimore, MD and Bethesda, MD. Call before your visit to confirm the address.
- What is Stephen Greco's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Stephen Greco accept Medicare assignment?
- Medicare's clinician data says Stephen Greco may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Stephen Greco offer telehealth?
- Medicare's clinician data says Stephen Greco offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Stephen Greco?
- (202) 537-4000, as listed in official Medicare / NPI Registry data.
- What is Stephen Greco's NPI number?
- 1659463750. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen Greco works
Medicare's Facility Affiliation Data lists Stephen Greco 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
- Suburban HospitalBethesda, MD · Acute Care Hospital · CCN 210022
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
- Tidalhealth Peninsula Regional, IncSalisbury, MD · Acute Care Hospital · CCN 210019
Practice locations
Addresses where Stephen Greco is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 5215 Loughboro Rd NW, Sibley Memorial HospitalWashington, DC 20016 (202) 537‑4000
- 5255 Loughboro Road NW, Sibley Memorial HospitalWashington, DC 20016 (202) 537‑4000
- 600 N Wolf StBaltimore, MD 21287
- 600 N Wolfe St, Blalock 266Baltimore, MD 21287 (410) 502‑4340
- 6420 Rockledge DrBethesda, MD 20817 (301) 896‑6717
Group practices
Medicare enrollment lists Stephen Greco 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
- Radiation Oncologyprimary
Find other Radiation Oncology doctors in District of Columbia →
Other radiation oncologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In New Orleans |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659463750 |
| 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