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Efficacy Inc.

Clinical Social Worker in Dorchester, MA · enumerated 2012 · authorized official Lillian Seibert, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1235483371

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Registry record

Entity type Organization (Type 2)
Legal business name Efficacy Inc.
Practice address 1370 Dorchester Ave, 32, Dorchester, MA, 02122
Phone (617) 816-8446
Enumeration date Oct 27, 2012
Last updated in NPPES Oct 27, 2012

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 11708 (MA) Primary

Authorized official

Name Lillian Seibert
Title President
Phone (617) 816-8446

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-10-27. Verify at npiregistry.cms.hhs.gov.
Where is Efficacy Inc. located?
The practice location on file with NPPES is in Dorchester, MA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-27.