John A. Simpson, MD
Listed as an allergist, with a practice address in Falls Church, Virginia.
This record may be out of date. The doctor’s record in the national provider registry hasn’t been updated since 2015, and they don’t appear in current Medicare records. They may have moved or retired. Call before you go.
Practice location 1
6305 Castle Pl, Suite 2D
Falls Church, VA 22044
From the records
- Specialty
- Allergist
- Records
- National provider registry only, not updated since 2015. May have moved or retired.
- Registry record
- Last updated November 2015
- NPI
- 1417049347 (national provider registry)
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From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors