NPPES file of Aug 9, 2026

Kathryn Marqueen, MD

Radiation Oncology Physician · Fairfax, VA

Kathryn Marqueen, MD is a radiation oncology physician with a practice address in Fairfax, Virginia, and NPI 1427678945, issued on Apr 24, 2020. Check the license (Virginia 0101286557, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427678945
Name
Kathryn Marqueen
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
0101286557 VA
Self-reported in NPPES; status is on the state search
Practice location
8081 Innovation Park Dr, Fairfax, VA 22031
Phone
(571) 472-0606
Enumerated
Apr 24, 2020
Record last updated
Aug 11, 2025
Medicare enrollment
Enrolled (PECOS I20251023002178); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest radiation oncology physician records → All 137 in Virginia → Look up another NPI →

Also registered at 8081 Innovation Park Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Bilal Abboud, RPHPharmacist1851953269
  2. Nagla Abdel Karim, MDMedical Oncology Physician1881805166
  3. Vanya Aggarwal, MDHematology & Oncology Physician1134784309
  4. Germame Ajebo, MDHematology (Internal Medicine) Physician1396183661
  5. Jafar Al-Mondhiry, M.D.Medical Oncology Physician1528446242
  6. Sheinei Alan, MD, PHDInternal Medicine Physician1073046538

Verify Kathryn Marqueen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersVirginia Department of Health Professions
    Search for license 0101286557    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Virginia license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Radiation Oncology Associates PCLeesburg, VA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kathryn Marqueen among 137 radiation oncology physician records in Virginia

Kathryn Marqueen, MD is one of 137 radiation oncology physician records with a practice address in Virginia. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 92% of them.

  • NPI issued2020 · 92% of these records are older, 5% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2020 · median 2003 among the 96 with a school on file
  • Record last updated2025 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Virginia

There are 137 radiation oncology physician records in Virginia.

All 137 in Virginia → Every provider in Fairfax → Radiation Oncology Physician nationwide →

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Harold Agbahiwe, M.D.Fairfax, VA 220311073797460
  2. Gopal Bajaj, M.D.Fairfax, VA 220311922063197
  3. Tobias Chapman, M.D.Fairfax, VA 220311588927016
  4. Ashish Chawla, M.D.Fairfax, VA 220311699777599
  5. Kevin Choe, MDFairfax, VA 220311609043892
  6. Michael Eblan, MDFairfax, VA 220311962795773
  7. Stella Hetelekidis, MDFairfax, VA 220311467416693
  8. Samir Kanani, M.D.Fairfax, VA 220311558336719

Common questions

What is Kathryn Marqueen, MD's NPI number?

Kathryn Marqueen, MD's National Provider Identifier (NPI) is 1427678945, issued on Apr 24, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn Marqueen, MD located?

The NPPES record lists a practice address at 8081 Innovation Park Dr, Fairfax, VA, 22031. Phone: (571) 472-0606. Providers update this record themselves, so call before visiting.

How can I verify Kathryn Marqueen, MD's license?

NPPES lists Virginia license number 0101286557, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.