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

Sally Singer Horwatt, Ph D , PC

Organization Clinical Psychologist · NPI 1386767507

Sally Singer Horwatt, Ph D , PC is a Clinical Psychologist in Reston, Virginia. Licensed in Virginia. Registered with an NPI since 2007.

Licensed in
VA
In the registry since
2007
Specialties on file
2
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1800 Town Center Dr Ste 216
Reston, VA 20190-3215
Phone: (703) 435-4741
Fax: (703) 435-5881
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 0810000918 (VA)
Group Psychotherapy Psychologist Taxonomy 103TP2701X · Licence 0810000918 (VA)

Record details

NPI number1386767507
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Sally Horwatt — President · (703) 435-4741
NPI enumeratedApril 10, 2007
Last updated in NPPESSeptember 11, 2025
Mailing address1800 Town Center Dr, Suite 216, Reston, VA 20190-3215

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