Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

1st Class Sleep Diagnostics, Inc

Organization Clinical Medical Laboratory · NPI 1164766572

1st Class Sleep Diagnostics, Inc is a Clinical Medical Laboratory in Fairfax, Virginia. Licensed in Virginia. Registered with an NPI since 2012.

Licensed in
VA
In the registry since
2012
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3911 Old Lee Hwy Ste 42-B
Fairfax, VA 22030-2434
Phone: (703) 385-9222
Fax: (703) 373-2671
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Medical Laboratory (primary) Taxonomy 291U00000X · Licence 107828 (VA)

Record details

NPI number1164766572
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Young Yi — Founder · (703) 385-9222
NPI enumeratedNovember 26, 2012
Last updated in NPPESNovember 26, 2012
Mailing address14631 Lee Hwy, Suite 413, Centreville, VA 20121-5824

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