Leslie O'Brien, MSW, LICSW
NPI 1497067631 · Clinical Social Worker · Lexington, MA
Leslie O'Brien, MSW, LICSW is a Clinical Social Worker provider in Lexington, MA (NPI 1497067631).
Provider details
- NPI number
- 1497067631
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LICSW
- Sex
- Female
- Sole proprietor
- Yes
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
15 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2010-07-03
- Last updated
- 2025-05-06
- Certified
- 2025-05-06
Frequently asked questions
- What is Leslie O'Brien's NPI number?
- Leslie O'Brien's National Provider Identifier (NPI) is 1497067631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie O'Brien's specialty?
- Leslie O'Brien is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Leslie O'Brien located?
- Leslie O'Brien's practice location on file with NPPES is 52 Waltham St, Lexington, MA 02421-5407.
- What is Leslie O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Leslie O'Brien is (857) 263-3403.
- Is Leslie O'Brien's NPI active?
- Yes — Leslie O'Brien's NPI (1497067631) is active in the NPPES registry as of the last update on 2025-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.