Quick answers
- Which hospitals does Marshall P. Mallory work at?
- Medicare's official clinician data lists Marshall P. Mallory at 5 hospitals: Adventist Healthcare Shady Grove Medical Center, Adventist Healthcare White Oak Medical Center, Flushing Hospital Medical Center, Henry Ford Health St John Hospital and Holy Cross Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marshall P. Mallory see patients?
- Medicare's clinician data lists 6 practice locations, including Silver Spring, MD, Germantown, MD and Baltimore, MD. Call before your visit to confirm the address.
- What is Marshall P. Mallory's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Marshall P. Mallory accept Medicare assignment?
- Yes. Medicare's clinician data says Marshall P. Mallory 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 Marshall P. Mallory?
- (301) 754-7000, as listed in official Medicare / NPI Registry data.
- What is Marshall P. Mallory's NPI number?
- 1083620447. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marshall P. Mallory works
Medicare's Facility Affiliation Data lists Marshall P. Mallory at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Healthcare Shady Grove Medical CenterRockville, MD · Acute Care Hospital · CCN 210057
- Adventist Healthcare White Oak Medical CenterSilver Spring, MD · Acute Care Hospital · CCN 210016
- Flushing Hospital Medical CenterFlushing, NY · Acute Care Hospital · CCN 330193
- Henry Ford Health St John HospitalDetroit, MI · Acute Care Hospital · CCN 230165
- Holy Cross HospitalSilver Spring, MD · Acute Care Hospital · CCN 210004
Practice locations
Addresses where Marshall P. Mallory is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1500 Forest Glen RdSilver Spring, MD 20910 (301) 754‑7000
- 19801 Observation DrGermantown, MD 20876 (301) 557‑6000
- 2401 W Belvedere Ave, Lbh Medical Group TeleradiologyBaltimore, MD 21215 (410) 601‑9000
- 4500 Parsons BlvdFlushing, NY 11355 (718) 670‑5447
- 8900 Van Wyck ExpyJamaica, NY 11418 (718) 206‑6000
Group practices
Medicare enrollment lists Marshall P. Mallory as a member of these groups (CMS data updated 2026-10-02).
- Jamaica Hospital255 clinicians in the group
- Lifebridge Community Physicians Inc183 clinicians in the group
- Professional Services of Holy Cross158 clinicians in the group
- Blackwell Physicians, LLC68 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Silver Spring
Clinicians with the same Medicare primary specialty in Silver Spring, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Georgia School Of Medicine |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083620447 |
| 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