Dr. Mark George Janczewski, MD, MPH
Dr. Mark George Janczewski, MD, MPH is a Preventive Medicine/Occupational Environmental Medicine Physician in Alexandria, Virginia. Practices as a sole proprietor and works from 2 locations. Licensed in Virginia.
- Licensed in
- VA
- In the registry since
- 2005
- Specialties on file
- 4
What do these letters mean?
Practice location Address checks out
425 S Payne StAlexandria, VA 22314-5944
Phone: (703) 994-7637
Show map & directions
Directions in Google Maps · Apple Maps · OpenStreetMap
Pin is approximate — placed at the ZIP-code centre, not the exact door.
Additional practice locations (1)
- 410 Government Ave Ste 1, Valparaiso, FL 32580-1061 — (703) 994-7637
Specialties & licences
| Clinical Informatics Physician (primary) | Taxonomy 2083C0008X · Licence 0101041106 (VA) |
|---|---|
| Preventive Medicine/Occupational Environmental Medicine Physician | Taxonomy 2083P0500X · Licence 0101041106 (VA) |
| Family Medicine Physician | Taxonomy 207Q00000X · Licence 0101041106 (VA) |
| Aerospace Medicine Physician | Taxonomy 2083A0100X · Licence 0101041106 (VA) |
Record details
| NPI number | 1124022843 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD , MPH |
| Sole proprietor | Yes |
| NPI enumerated | June 9, 2005 |
| Last updated in NPPES | September 3, 2025 |
| Certification date | September 3, 2025 |
| Mailing address | 425 S Payne St, Alexandria, VA 22314-5944 |