Quick answers
- Which hospitals does Thomas S. Caldwell work at?
- Medicare's official clinician data lists Thomas S. Caldwell at 1 hospital: Inova Mount Vernon Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas S. Caldwell see patients?
- Medicare's clinician data lists 1 practice location in Alexandria, VA. Call before your visit to confirm the address.
- What is Thomas S. Caldwell's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Thomas S. Caldwell accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas S. Caldwell 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 Thomas S. Caldwell?
- (703) 664-7000, as listed in official Medicare / NPI Registry data.
- What is Thomas S. Caldwell's NPI number?
- 1124768718. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas S. Caldwell works
Medicare's Facility Affiliation Data lists Thomas S. Caldwell at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Inova Mount Vernon HospitalAlexandria, VA · Acute Care Hospital · CCN 490122
Practice locations
Addresses where Thomas S. Caldwell is enrolled with Medicare (CMS data updated 2026-10-02).
- 2501 Parkers LnAlexandria, VA 22306 (703) 664‑7000
Group practices
Medicare enrollment lists Thomas S. Caldwell as a member of this group (CMS data updated 2026-10-02).
- Commonwealth Emergency Physicians PC45 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Alexandria
Clinicians with the same Medicare primary specialty in Alexandria, VA — not a recommendation.
Clinician information
| Medical school | University Of Virginia School Of Medicine |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124768718 |
| 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