John T. Hart, M.D.
General Practice Physician · Ashburn, VA
John T. Hart, M.D. is a general practice physician with a practice address in Ashburn, Virginia, and NPI 1548383532, issued on Apr 6, 2007. Check the license (Virginia 0101058140, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- John T. Hart
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 0101058140 VA
Self-reported in NPPES; status is on the state search - Practice location
- 20925 Professional Plz, Ashburn, VA 20147
- Phone
- (703) 724-9694
- Enumerated
- Apr 6, 2007
- Record last updated
- Sep 11, 2025
- Fax
- (703) 724-4017
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 400 in Virginia → Look up another NPI →
Also registered at 20925 Professional Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nick Gentile, LPCProfessional Counselor1134212186
Verify John T. Hart in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101058140Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average general practice physician in 2024
331 Medicare Part D claims for 58 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
Most prescribed
- Progesterone80 claims
- Armour Thyroid49 claims
- Testosterone Cypionate47 claims
- Anastrozole31 claims
- Hydrocortisone28 claims
- Np Thyroid24 claims
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.
John T. Hart among 400 general practice physician records in Virginia
John T. Hart, M.D. is one of 400 general practice physician records with a practice address in Virginia. 34% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 22% of them.
- NPI issued2007 · 22% of these records are older, 68% newer
- In a Medicare fileYes · 34% of these records are
- In the CMS Doctors and Clinicians fileNo · 17% of these records are
- Record last updated2025 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Virginia
There are 400 general practice physician records in Virginia.
All 400 in Virginia → Every provider in Ashburn → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Andrew Spurr, M.D.Chantilly, VA 201511730746314
- Warren Johnson, M.D.Purcellville, VA 201321538595103
- Mohammad Rashid, M.D.Purcellville, VA 201321629018304
- Madge Vanness, M.D.Sterling, VA 201641801228192
- Laura Koniver, M.D.Haymarket, VA 201691013305259
- Joseph Gurrala, MDHerndon, VA 201701760674345
- Fred Wilkins, MDHerndon, VA 201701043631906
- Helen CicirelloLeesburg, VA 201751720428428
Common questions
What is John T. Hart, M.D.'s NPI number?
John T. Hart, M.D.'s National Provider Identifier (NPI) is 1548383532, issued on Apr 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John T. Hart, M.D. located?
The NPPES record lists a practice address at 20925 Professional Plz, Ashburn, VA, 20147. Phone: (703) 724-9694. Providers update this record themselves, so call before visiting.
How can I verify John T. Hart, M.D.'s license?
NPPES lists Virginia license number 0101058140, 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 John T. Hart, M.D. prescribe under Medicare Part D?
In 2024, John T. Hart, M.D. had 331 Medicare Part D claims for 58 beneficiaries; the average among general practice physician prescribers was 3,030. 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.