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

Dr. William R Chatlos, PHD

Individual provider Psychologist · NPI 1639477557

Dr. William R Chatlos, PHD is a Psychologist in Reston, Virginia. Practices as a sole proprietor. Licensed in Virginia.

Licensed in
VA
In the registry since
2011
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

11333 Sunset Hills Rd
Reston, VA 20190-5205
Phone: (703) 437-9103
Fax: (703) 464-0507
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 0811000922 (VA)

Record details

NPI number1639477557
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMarch 1, 2011
Last updated in NPPESMarch 1, 2011

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