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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

SARAH SOUTHWICK
NPI 1063311009
Counselor - Mental Health in Lexington, MA

Active since November 04, 2026
125 HARTWELL AVE, LEXINGTON, MA 02421(781) 861-0890 Get Directions Write a Review

NPPES record added: November 4, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Sarah Southwick NPPES

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

SARAH SOUTHWICK (NPI 1063311009) is an individual mental health provider in Lexington, Massachusetts and active in the NPI registry since November 2026.

NPPES Registry Identity

NPI1063311009
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameSARAH SOUTHWICK
Location Address125 HARTWELL AVELexington, MA 02421-3100
Mailing Address125 Hartwell AveLexington, MA 02421-3100
Phone(781) 861-0890
Sole ProprietorYes
Enumeration DateNovember 4, 2026
NPPES CertifiedNovember 4, 2026
✔ NPI 1063311009 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
125 HARTWELL AVE, Lexington, MA 02421
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Other Providers at the Same Location NPPES 20

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

ANGELIKI CONSTANTINE
Counselor (Mental Health)
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890
EMMA CLAY RN
Nurse Practitioner (Psychiatric/Mental Health)
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890
KATE MCGRATH
Counselor (Mental Health)
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890
SARAH ALISON VALENTINE
Community Health Worker
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890
MADELINE ELIZABETH ELLIS
Counselor (Mental Health)
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890
GRACE WILLINGHAM
Counselor (Mental Health)
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890
MADLYNA BOUCHOTTE
Counselor (Mental Health)
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890
YALIA JOYNER
Counselor (Mental Health)
125 HARTWELL AVE
LEXINGTON, MA 02421
Middlesex County (781) 861-0890

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 Sarah Southwick's NPI number?

The NPI number for Sarah Southwick is 1063311009. It was assigned to this individual provider in the NPPES registry on November 4, 2026.

Where is Sarah Southwick located?

Sarah Southwick practices at 125 Hartwell Ave, Lexington, MA 02421. The listed phone number is (781) 861-0890.

What is Sarah Southwick'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 Sarah Southwick was last updated on November 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.