Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Antoinette Marie Stewart, MD

Individual provider Child & Adolescent Psychiatry Physician · NPI 1215014659

Antoinette Marie Stewart, MD practises Psychiatry in Rockville, Maryland. Qualified in 1996, 30 years ago. Practices with Columbia Associates in Psychiatry PC, a 123-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in North Carolina and Virginia.

Years since qualifying
30
Licensed in
NC, VA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

11921 Rockville Pike Ste 402
Rockville, MD 20852-2757
Phone: (425) 658-2254
Fax: (301) 888-8261
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 13215 Brook Lane, Hagerstown, MD 21742-1514 — (301) 733-0330
  • 2445 W 34th St, Erie, PA 16506-3549 — (814) 835-7621
  • 12359 Sunrise Valley Dr Ste 320, Reston, VA 20191-3463 — (703) 596-4796

Specialties & licences

Child & Adolescent Psychiatry Physician (primary) Taxonomy 2084P0804X · Licence 0101236941 (VA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 2005-1477 (NC)

Record details

NPI number1215014659
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 1, 2006
Last updated in NPPESJuly 30, 2025
Certification dateJuly 30, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Columbia Associates In Psychiatry Pc — 123 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $402 16 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Columbia Associates in Psychiatry PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 123 clinicians in the practice; 12 are shown here.

Other providers in Rockville