NPPES file of Aug 9, 2026

Find an organization's NPI

7 active organization NPIs are registered under names beginning "1st Class Sleep Diagnostics" in Virginia. Each location can bill under its own NPI, so add the city to find the one you need.

1 to 7 of 7, exact name first

  1. 1st Class Sleep Diagnostics, INC

    Clinical Medical Laboratory · Fairfax, VA · issued Nov 26, 2012

    1164766572
  2. 1st Class Sleep Diagnostics, INC

    Clinical Medical Laboratory · Gainesville, VA · issued Nov 15, 2012

    1881938090
  3. 1st Class Sleep Diagnostics, INC

    Clinical Medical Laboratory · Herndon, VA · issued Feb 1, 2013

    1902145626
  4. 1st Class Sleep Diagnostics, INC

    Clinical Medical Laboratory · Leesburg, VA · issued Nov 15, 2012

    1508100710
  5. 1st Class Sleep Diagnostics, INC

    Clinical Medical Laboratory · Leesburg, VA · issued Nov 15, 2012

    1417291626
  6. 1st Class Sleep Diagnostics, INC

    Clinical Medical Laboratory · Springfield, VA · issued Nov 15, 2012

    1144564352
  7. 1st Class Sleep Diagnostics, INC

    Clinical Medical Laboratory · Vienna, VA · issued Nov 15, 2012

    1326382532

Source: CMS NPPES monthly file of Aug 9, 2026, organization (Type 2) records.