Sally Singer Horwatt, PH.D., PC
NPI 1386767507 · Clinical Psychologist · Reston, VA
Sally Singer Horwatt, PH.D., PC is a Clinical Psychologist organization in Reston, VA (NPI 1386767507).
Provider details
- NPI number
- 1386767507
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Sally Horwatt, President(703) 435-4741
- License
- 0810000918 (VA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-10
- Last updated
- 2025-09-11
Frequently asked questions
- What is Sally Singer Horwatt, PH.D., PC's NPI number?
- Sally Singer Horwatt, PH.D., PC's National Provider Identifier (NPI) is 1386767507, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sally Singer Horwatt, PH.D., PC?
- Sally Singer Horwatt, PH.D., PC is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Sally Singer Horwatt, PH.D., PC located?
- Sally Singer Horwatt, PH.D., PC's practice location on file with NPPES is 1800 Town Center Dr, Reston, VA 20190-3215.
- What is Sally Singer Horwatt, PH.D., PC's phone number?
- The practice phone number listed in the NPPES registry for Sally Singer Horwatt, PH.D., PC is (703) 435-4741.
- Who is the authorized official for Sally Singer Horwatt, PH.D., PC?
- The authorized official listed on Sally Singer Horwatt, PH.D., PC's NPPES record is Sally Horwatt, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sally Singer Horwatt, PH.D., PC's NPI active?
- Yes — Sally Singer Horwatt, PH.D., PC's NPI (1386767507) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.