Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Margaret Reardon
Social Worker in South Boston, MA · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669362109
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Margaret Reardon
Sex Female
Practice address 210 Old Colony Ave, South Boston, MA, 02127
Phone (617) 268-5000
Enumeration date Jul 7, 2025
Last updated in NPPES May 22, 2026
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License LCSW2143353 (MA) Primary
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
Is NPI 1669362109 active?
Yes, as of the latest NPPES snapshot, NPI 1669362109 is active (record last updated 2026-05-22).
How do I verify Margaret Reardon's NPI record?
Cross-check NPI 1669362109 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → John Leavitt Addiction (Substance Use Disorder) Counselor · South Boston, MA NPI 1972675320 Sharikka Finley-Moise Clinical Social Worker · South Boston, MA NPI 1831526912 Evangelos Nomikos Addiction (Substance Use Disorder) Counselor · South Boston, MA NPI 1932642147 Kathryn Fackina Mental Health Counselor · South Boston, MA NPI 1417462169 Jeanne Internicola Addiction (Substance Use Disorder) Counselor · South Boston, MA NPI 1306345483 Molly Conway Counselor · Boston, MA NPI 1417437930 Christina Mesa Clinical Social Worker · Boston, MA NPI 1063018067 Fabienne Errie Addiction (Substance Use Disorder) Counselor · South Boston, MA NPI 1356921696
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-22.