IndividualActive
Diana O'Brien, LCSW
NPI 1700035375 · Clinical Social Worker · Norwalk, CT
Diana O'Brien, LCSW is a Clinical Social Worker provider in Norwalk, CT (NPI 1700035375).
Provider details
- NPI number
- 1700035375
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 004656 (CT)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
161 East Ave
Suite 204
Norwalk, CT 06851-5710
Phone: (203) 838-8344
Fax: (203) 523-5892
Street-level locationGet directions
Mailing address
161 East Ave
Norwalk, CT 06851-5710
Registry dates
- Enumerated
- 2008-09-18
- Last updated
- 2008-09-18
Frequently asked questions
- What is Diana O'Brien's NPI number?
- Diana O'Brien's National Provider Identifier (NPI) is 1700035375, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana O'Brien's specialty?
- Diana O'Brien is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Diana O'Brien located?
- Diana O'Brien's practice location on file with NPPES is 161 East Ave, Norwalk, CT 06851-5710.
- What is Diana O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Diana O'Brien is (203) 838-8344.
- Is Diana O'Brien's NPI active?
- Yes — Diana O'Brien's NPI (1700035375) is active in the NPPES registry as of the last update on 2008-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.