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

Mary Louise Sebastian, MD

Individual provider Surgery Physician · NPI 1124054457

Mary Louise Sebastian, MD practises General Surgery in Arlington, Virginia. Graduated from University of Virginia School of Medicine in 2000, 26 years ago. Practices with Virginia Hospital Center Physician Group LLC, a 350-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Virginia.

Years since qualifying
26
Trained at
University of Virginia School of Medicine
Licensed in
VA
In the registry since
2006
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

1851 N George Mason Dr Ste 5D
Arlington, VA 22207-1953
Phone: (703) 717-4217
Fax: (703) 717-4218
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1625 N George Mason Dr Ste 315, Arlington, VA 22205-3690 — (703) 717-4217
  • 1760 Old Meadow Rd Ste 210, Mc Lean, VA 22102-4330 — (703) 717-7775

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 0101233396 (VA)

Record details

NPI number1124054457
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 26, 2006
Last updated in NPPESFebruary 23, 2026
Certification dateFebruary 23, 2026

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF VIRGINIA SCHOOL OF MEDICINE
Graduated 2000 (26 years in practice)
Group practice Virginia Hospital Center Physician Group Llc — 350 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Mastectomy 36 times · 90th percentile
Melanoma (skin cancer) excision 22 times · 76th percentile
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients140
Services billed 448 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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 $92 1 payment · 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Virginia Hospital Center Physician Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 350 clinicians in the practice; 12 are shown here.

Other providers in Arlington