Kin-Sing Au, MD
Radiation Oncology Physician · Leesburg, VA
Kin-Sing Au, MD is a radiation oncology physician with a practice address in Leesburg, Virginia, and NPI 1730172362, issued on Aug 30, 2005. Check the license (Virginia 0101046565, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Kin-Sing Au
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 0101046565 VA
M-1793 GU
Self-reported in NPPES; status is on the state search - Practice location
- 44035 Riverside Pkwy, Leesburg, VA 20176
- Phone
- (703) 858-8850
- Enumerated
- Aug 30, 2005
- Record last updated
- Dec 23, 2024
- Fax
- (703) 858-8870
- Medicaid ID
- 010046769 VA
- Medicare enrollment
- Enrolled (PECOS I20131101001554); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 137 in Virginia → Look up another NPI →
Also registered at 44035 Riverside Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Subash Bazaz, M.D.Cardiovascular Disease Physician1619971264
- Margie Comerford, SLP, CCCSpeech-Language Pathologist1114187358
- Kellie Czajkowski, M.T.Massage Therapist1699097667
- Kelly Dunmire, OTOccupational Therapist1225211980
- Jaster FrancisMedical Physician Assistant1588061956
Verify Kin-Sing Au in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101046565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Guam Healthcare Development IncorporatedDededo, GU
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kin-Sing Au among 137 radiation oncology physician records in Virginia
Kin-Sing Au, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1981 · median 2003 among the 96 with a school on file
- Record last updated2024 · 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 Leesburg → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Jinchul Kim, M.D.Lansdowne, VA 201761205907169
- Rosemary Altemus, MDReston, VA 201901083687156
- Sanjeev Aggarwal, MDGainesville, VA 201551316923014
- Moira Sutton, MDGainesville, VA 201551588611040
- Harold Agbahiwe, M.D.Fairfax, VA 220311073797460
- Gopal Bajaj, M.D.Fairfax, VA 220311922063197
- Tobias Chapman, M.D.Fairfax, VA 220311588927016
- Ashish Chawla, M.D.Fairfax, VA 220311699777599
Common questions
What is Kin-Sing Au, MD's NPI number?
Kin-Sing Au, MD's National Provider Identifier (NPI) is 1730172362, issued on Aug 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kin-Sing Au, MD located?
The NPPES record lists a practice address at 44035 Riverside Pkwy, Leesburg, VA, 20176. Phone: (703) 858-8850. Providers update this record themselves, so call before visiting.
How can I verify Kin-Sing Au, MD's license?
NPPES lists Virginia license number 0101046565, 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.
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.