Quick answers
- Which hospitals does Timothy D. Muir work at?
- Medicare's official clinician data lists Timothy D. Muir at 1 hospital: Virginia Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Timothy D. Muir see patients?
- Medicare's clinician data lists 5 practice locations, including Arlington, VA, Falls Church, VA and Lanham, MD. Call before your visit to confirm the address.
- What is Timothy D. Muir's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Timothy D. Muir accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy D. Muir 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 Timothy D. Muir offer telehealth?
- Medicare's clinician data says Timothy D. Muir offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Timothy D. Muir?
- (703) 521-6662, as listed in official Medicare / NPI Registry data.
- What is Timothy D. Muir's NPI number?
- 1518012806. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Timothy D. Muir works
Medicare's Facility Affiliation Data lists Timothy D. Muir at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Virginia Hospital CenterArlington, VA · Acute Care Hospital · CCN 490050
Practice locations
Addresses where Timothy D. Muir is enrolled with Medicare (CMS data updated 2026-10-02).
- 1625 N George Mason DrArlington, VA 22205 (703) 521‑6662
- 3301 Wilson BlvdArlington, VA 22201 (703) 243‑6720
- 500 W Annandale RdFalls Church, VA 22046 (703) 521‑6662
- 9470 Annapolis Rd, Suite 309Lanham, MD 20706 (202) 832‑1800
- 950 N Glebe Rd, Suite 700Arlington, VA 22203
Group practices
Medicare enrollment lists Timothy D. Muir as a member of this group (CMS data updated 2026-10-02).
- Privia Medical Group, LLC1,533 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Arlington
Clinicians with the same Medicare primary specialty in Arlington, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1518012806 |
| 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