Lo An T. Nguyen, MD
Internal Medicine Physician · Reston, VA
Lo An T. Nguyen, MD is an internal medicine physician with a practice address in Reston, Virginia, and NPI 1033284971, issued on Nov 22, 2006. Check the license (Virginia 0101048232, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Lo An T. Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101048232 VA
Self-reported in NPPES; status is on the state search - Practice location
- 11445 Sunset Hills Road, Reston, VA 20190
- Phone
- (703) 709-1500
- Enumerated
- Nov 22, 2006
- Record last updated
- May 16, 2024
- Fax
- (703) 709-1711
- Entity
- Type 1 · individual
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Verify Lo An T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101048232Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
16 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Lo An T. Nguyen among 3,599 internal medicine physician records in Virginia
Lo An T. Nguyen, MD is one of 3,599 internal medicine physician records with a practice address in Virginia. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2024 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 internal medicine physician records list a practice address in Reston
They are 56 of the 1,676 NPPES records with a practice address in Reston, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Reston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Farah Abdulsalam, MDReston, VA 201901417952367
- Natasha Chen, MDReston, VA 201901174514012
- Tessa Cholmondeley, MDReston, VA 201901124132873
- Anne Rose Eapen, M.D.Reston, VA 201901689661431
- Chun Hong, MD PHDReston, VA 201901003844960
- Navleen Kaur, M.D.Reston, VA 201901215966403
- Padmalatha Kona, MDReston, VA 201901558333427
- Peter Kongstvedt, M.D.Reston, VA 201901295772275
Common questions
What is Lo An T. Nguyen, MD's NPI number?
Lo An T. Nguyen, MD's National Provider Identifier (NPI) is 1033284971, issued on Nov 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lo An T. Nguyen, MD located?
The NPPES record lists a practice address at 11445 Sunset Hills Road, Reston, VA, 20190. Phone: (703) 709-1500. Providers update this record themselves, so call before visiting.
How can I verify Lo An T. Nguyen, MD's license?
NPPES lists Virginia license number 0101048232, 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.
How much does Lo An T. Nguyen, MD prescribe under Medicare Part D?
In 2024, Lo An T. Nguyen, MD had 16 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.