NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Thomas Edward Magnan, LADCI

Addiction (Substance Use Disorder) Counselor in South Boston, MA · enumerated 2010 · practices at Gavin Foundation.

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

National Provider Identifier

1891006177

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Thomas Edward Magnan
Credential LADCI
Sex Male
Practice address South Boston, MA, 02127
Phone (617) 268-5000
Fax (617) 268-5008
Enumeration date Jul 1, 2010
Last updated in NPPES Jul 1, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 1369 (MA) Primary

Other identifiers

Identifier Type State Issuer
1369 Other MA LADCI

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Thomas Magnan practice?
The practice location on file with NPPES is in South Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Thomas Magnan?
The National Provider Identifier (NPI) for Thomas Magnan is 1891006177, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-01.