IndividualActive
Elizabeth Portnoy, LCSW
NPI 1669343109 · Clinical Social Worker · Chelsea, MA
Elizabeth Portnoy, LCSW is a Clinical Social Worker provider in Chelsea, MA (NPI 1669343109).
Provider details
- NPI number
- 1669343109
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 229813 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(54/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
299 Everett Ave
Chelsea, MA 02150-1547
Phone: (617) 466-5065
Street-level locationGet directions
Mailing address
299 Everett Ave
Chelsea, MA 02150-1547
Registry dates
- Enumerated
- 2025-09-17
- Last updated
- 2025-09-17
- Certified
- 2025-09-17
Frequently asked questions
- What is Elizabeth Portnoy's NPI number?
- Elizabeth Portnoy's National Provider Identifier (NPI) is 1669343109, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Portnoy's specialty?
- Elizabeth Portnoy is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Elizabeth Portnoy located?
- Elizabeth Portnoy's practice location on file with NPPES is 299 Everett Ave, Chelsea, MA 02150-1547.
- What is Elizabeth Portnoy's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Portnoy is (617) 466-5065.
- Is Elizabeth Portnoy's NPI active?
- Yes — Elizabeth Portnoy's NPI (1669343109) is active in the NPPES registry as of the last update on 2025-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.