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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MICHELE LYNN SANTIAGO-MAHONEY
NPI 1356153548
Counselor - Mental Health in Lexington, MA

Active since January 23, 2025
450 BEDFORD ST STE 2400, LEXINGTON, MA 02420(617) 302-7941 Get Directions Write a Review

NPPES record last updated: October 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 10, 2026, Nov 6, 2025 (2 updates tracked since 2025).

About Michele Lynn Santiago-mahoney NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHELE LYNN SANTIAGO-MAHONEY (NPI 1356153548) is an individual mental health provider in Lexington, Massachusetts and active in the NPI registry since January 2025.

NPPES Registry Identity

NPI1356153548
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMICHELE LYNN SANTIAGO-MAHONEY
Location Address450 BEDFORD ST STE 2400Lexington, MA 02420-1544
Mailing Address450 Bedford St Ste 2400Lexington, MA 02420-1544 · (617) 302-7941
Phone(617) 302-7941
Sole ProprietorNo
Enumeration DateJanuary 23, 2025
Last NPPES UpdateOctober 10, 20262 updates tracked since enumeration
NPPES CertifiedOctober 10, 2026
✔ NPI 1356153548 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
450 BEDFORD ST STE 2400, Lexington, MA 02420
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Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

OLIVIA GRACE CATALDO
Social Worker (Clinical)
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (781) 633-7779
MS. EMMA SMITH MA
Music Therapist
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (781) 633-7779
HANNAH PELL
Counselor (Mental Health)
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (703) 307-4584
JULIA NICOLE CASTAGNA
Counselor (Mental Health)
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (781) 633-7779
MALINDA KING
Counselor (Mental Health)
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (781) 633-7779
MARIA TATA MS
Counselor (Mental Health)
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (781) 633-7779
LAUREN SABELLA
Counselor (Mental Health)
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (781) 633-7779
BASSEL THAIER TUFFAHA
Social Worker (Clinical)
450 BEDFORD ST STE 2400
LEXINGTON, MA 02420
Middlesex County (781) 633-7779

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michele Santiago-mahoney's NPI number?

The NPI number for Michele Santiago-mahoney is 1356153548. It was assigned to this individual provider in the NPPES registry on January 23, 2025.

Where is Michele Santiago-mahoney located?

Michele Santiago-mahoney practices at 450 Bedford St Ste 2400, Lexington, MA 02420. The listed phone number is (617) 302-7941.

What is Michele Santiago-mahoney's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Michele Santiago-mahoney was last updated on October 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.