SALLY SINGER HORWATT, PH.D., PC
NPI 1386767507
Psychologist - Clinical in Reston, VA

Q: What is Sally Singer Horwatt, Ph.D., PC's NPI number?

The NPI number for Sally Singer Horwatt, Ph.D., PC is 1386767507. It was assigned to this organization in the NPPES registry on April 10, 2007.

Q: What is Sally Singer Horwatt, Ph.D., PC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Active since April 10, 2007

1800 TOWN CENTER DR, SUITE 216, RESTON, VA 20190(703) 435-4741(703) 435-5881 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

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About Sally Singer Horwatt, Ph.d., Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SALLY SINGER HORWATT, PH.D., PC (NPI 1386767507) is a healthcare organization registered as a clinical in Reston, Virginia and active in the NPI registry since April 2007. The organization lists Sally Singer Horwatt, President, as its authorized official.

NPPES Registry Identity

NPI1386767507

Entity TypeOrganization

Primary Taxonomy103TC0700X

Legal Business NameSALLY SINGER HORWATT, PH.D., PC

Location Address1800 TOWN CENTER DR, SUITE 216Reston, VA 20190-3215

Mailing Address1800 Town Center Dr, Suite 216Reston, VA 20190-3215 · (703) 435-4741 · Fax (703) 435-5881

Phone(703) 435-4741

Fax(703) 435-5881

Organization SubpartNo

Authorized OfficialSally Singer HorwattPresident · (703) 435-4741

Enumeration DateApril 10, 2007

Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration

✔ NPI 1386767507 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in VA · 0810000918

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Also ListedPsychologist · Group PsychotherapyTaxonomy 103TP2701X · License 0810000918 (VA)

1800 TOWN CENTER DR, Reston, VA 20190

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Other Identifiers 2

Other87726VA · United Behavioral Health

Other4602666VA · Aetna

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RESTON PSYCHOLOGICAL CENTER, P.C.

Counselor (Mental Health)

1800 TOWN CENTER DR, SUITE 411
RESTON, VA 20190

Fairfax County (703) 437-3236

DR. JUAN ALBERTO TRINIDAD M.D

Family Medicine

1800 TOWN CENTER DR, SUITE 310
RESTON, VA 20190

Fairfax County (703) 709-7225

DR. WENDY RUTH GOTTLIEB M.D.

Specialist

1800 TOWN CENTER DR, SUITE 418
RESTON, VA 20190

Fairfax County (703) 668-9499

DERMATOLOGY SPECIALISTS OF VIRGINIA PC

Dermatology

1800 TOWN CENTER DR, STE 415
RESTON, VA 20190

Fairfax County (703) 709-1492

MRS. MADELINE PETRIZZI JURICH LCSW

Social Worker

1800 TOWN CENTER DR, STE 411
RESTON, VA 20190

Fairfax County (703) 437-3236

DR. EDWARD DAVID FARBER PHD

Psychologist

1800 TOWN CENTER DR, #411
RESTON, VA 20190

Fairfax County (703) 437-3236

DR. ESTHER M. ISEMAN M.S., PH.D.

Specialist

1800 TOWN CENTER DR, SUITE 420
RESTON, VA 20190

Fairfax County (703) 860-6854

ELIZABETH ANN BRANTLEY MD

Pediatrics

1800 TOWN CENTER DR
RESTON, VA 20190

Fairfax County (703) 435-0808

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sally Singer Horwatt, Ph.D., PC's NPI number?

The NPI number for Sally Singer Horwatt, Ph.D., PC is 1386767507. It was assigned to this organization in the NPPES registry on April 10, 2007.

Where is Sally Singer Horwatt, Ph.D., PC located?

Sally Singer Horwatt, Ph.D., PC is located at 1800 Town Center Dr Suite 216, Reston, VA 20190. The listed phone number is (703) 435-4741.

What is Sally Singer Horwatt, Ph.D., PC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Sally Singer Horwatt, Ph.D., PC was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.