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

MARK ANDERSON
NPI 1356257737
Counselor - Mental Health in Lexington, MA

Active since August 24, 2026
125 HARTWELL AVE, LEXINGTON, MA 02421(781) 861-0890 Get Directions Write a Review

NPPES record added: August 24, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Mark Anderson NPPES

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

MARK ANDERSON (NPI 1356257737) is an individual mental health provider in Lexington, Massachusetts, licensed in Connecticut (8339) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1356257737
Entity TypeIndividualMale
Primary Taxonomy101YM0800X
Provider Legal NameMARK ANDERSON
Location Address125 HARTWELL AVELexington, MA 02421-3100
Mailing Address400 Quannapowitt Pkwy Apt 4238Wakefield, MA 01880-1369 · (203) 623-3972
Phone(781) 861-0890
Sole ProprietorYes
Enumeration DateAugust 24, 2026
NPPES CertifiedAugust 24, 2026
✔ NPI 1356257737 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in CT · 8339
125 HARTWELL AVE, Lexington, MA 02421
Open in Google Maps ↗

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
COLLEEN DYKSTRA
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

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 Mark Anderson's NPI number?

The NPI number for Mark Anderson is 1356257737. It was assigned to this individual provider in the NPPES registry on August 24, 2026.

Where is Mark Anderson located?

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

What is Mark Anderson'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 Mark Anderson was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.