Quick answers
- Does Antoinette Stewart accept Medicare assignment?
- Yes. Medicare's clinician data says Antoinette Stewart accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Antoinette Stewart's NPI number?
- 1215014659. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Antoinette Stewart is enrolled with Medicare (CMS data updated October 2, 2026).
- 10400 Little Patuxent PkwyColumbia, MD 21044 (571) 977‑6870
- 24560 Southpoint Dr, Suite 260Aldie, VA 20105 (571) 248‑7493
- 2501 N Glebe Rd, Suite 303Arlington, VA 22207 (703) 841‑1290
Group practices
Medicare enrollment lists Antoinette Stewart as a member of this group (CMS data updated October 2, 2026).
- Columbia Associates in Psychiatry PC149 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Columbia
Clinicians with the same Medicare primary specialty in Columbia, MD — not a recommendation.
Other clinicians in Columbia Associates in Psychiatry PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215014659 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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