Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Diane M Ferrari, LICSW
Social Worker in Milton, MA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1972072296
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Registry record
Entity type Individual (Type 1)
Name Mrs. Diane M Ferrari
Credential LICSW
Sex Female
Practice address Milton Residents Fund, 535 Canton Ave., Milton, MA, 02186
Phone (617) 696-1214
Enumeration date Nov 15, 2018
Last updated in NPPES Nov 15, 2018
Taxonomy & licenses
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.
Frequently asked questions
What specialty is Diane Ferrari?
Diane Ferrari is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-15.