John Hart, M.D.
NPI 1548383532 · General Practice Physician · Ashburn, VA
John Hart, M.D. is a General Practice Physician provider in Ashburn, VA (NPI 1548383532).
Provider details
- NPI number
- 1548383532
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0101058140 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Progesterone, Micronizedbrand: Progesterone | 80 | 23 |
| Thyroid,porkbrand: Armour Thyroid | 49 | 15 |
| Testosterone Cypionate | 47 | — |
| Anastrozole | 31 | — |
| Hydrocortisone | 28 | — |
| Thyroid,porkbrand: NP Thyroid | 24 | — |
| Losartan Potassium | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-06
- Last updated
- 2025-09-11
Frequently asked questions
- What is John Hart's NPI number?
- John Hart's National Provider Identifier (NPI) is 1548383532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hart's specialty?
- John Hart is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is John Hart located?
- John Hart's practice location on file with NPPES is 20925 Professional Plz, Ashburn, VA 20147-3403.
- What is John Hart's phone number?
- The practice phone number listed in the NPPES registry for John Hart is (703) 724-9694.
- Is John Hart's NPI active?
- Yes — John Hart's NPI (1548383532) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.