Quick answers
- Which hospitals does Marc Gruner work at?
- Medicare's official clinician data lists Marc Gruner at 2 hospitals: Sibley Memorial Hospital and Virginia Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marc Gruner see patients?
- Medicare's clinician data lists 5 practice locations, including Frederick, MD, Washington, DC and Bethesda, MD. Call before your visit to confirm the address.
- What is Marc Gruner's specialty?
- Medicare lists Sports Medicine as the primary specialty, and also Internal Medicine.
- Does Marc Gruner accept Medicare assignment?
- Yes. Medicare's clinician data says Marc Gruner 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.
- Does Marc Gruner offer telehealth?
- Medicare's clinician data says Marc Gruner offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marc Gruner?
- (301) 530-1010, as listed in official Medicare / NPI Registry data.
- What is Marc Gruner's NPI number?
- 1760877492. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marc Gruner works
Medicare's Facility Affiliation Data lists Marc Gruner 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
- Virginia Hospital CenterArlington, VA · Acute Care Hospital · CCN 490050
Practice locations
Addresses where Marc Gruner is enrolled with Medicare (CMS data updated 2026-10-02).
- 187 Thomas Johnson DrFrederick, MD 21702
- 187 Thomas Johnson Dr, Suite 6Frederick, MD 21702
- 2021 K St NW, Suite 610Washington, DC 20006 (301) 530‑1010
- 6410 Rockledge DrBethesda, MD 20817
- 6410 Rockledge Dr, Suite 600Bethesda, MD 20817
Group practices
Medicare enrollment lists Marc Gruner as a member of these groups (CMS data updated 2026-10-02).
- Suburban/Nrh Medical Rehabilitation Inc941 clinicians in the group
- Amber Hill Physical Therapy Inc334 clinicians in the group
- Bethesda Chevy Chase Orthopaedic Associates, LLC134 clinicians in the group
Specialties
- Sports Medicineprimary
- Internal Medicinealso
Other sports medicine doctors in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Edward Via Col Of Osteo Medicine-Virginia Campus |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1760877492 |
| 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