Sarah Duffy, LCSW
NPI 1124636162 · Clinical Social Worker · Alexandria, VA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Duffy, LCSW is a Clinical Social Worker provider in Alexandria, VA (NPI 1124636162).
Provider details
- NPI number
- 1124636162
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 0904012015 (VA)
Specialties & taxonomies
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
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 6823 Floyd AveSpringfield, VA 22150-2455Phone: (703) 231-8772
Registry dates
- Enumerated
- 2020-07-15
- Last updated
- 2021-03-28
- Certified
- 2020-08-23
Frequently asked questions
- What is Sarah Duffy's NPI number?
- Sarah Duffy's National Provider Identifier (NPI) is 1124636162, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Duffy's specialty?
- Sarah Duffy is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Sarah Duffy located?
- Sarah Duffy's practice location on file with NPPES is 6300 Stevenson Ave Bldg Suiteb, Alexandria, VA 22304-3576.
- What is Sarah Duffy's phone number?
- The practice phone number listed in the NPPES registry for Sarah Duffy is (703) 935-0058.
- Does Sarah Duffy accept Medicare?
- Sarah Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Duffy's NPI active?
- Yes — Sarah Duffy's NPI (1124636162) is active in the NPPES registry as of the last update on 2021-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.