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NIANYAO XIAO
NPI 1376405738
Counselor - Mental Health in Lexington, MA

Active since November 24, 2025
125 HARTWELL AVE, LEXINGTON, MA 02421(781) 861-0890 Get Directions Write a Review

NPPES record last updated: November 24, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Nianyao Xiao NPPES

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

NIANYAO XIAO (NPI 1376405738) is an individual mental health provider in Lexington, Massachusetts and active in the NPI registry since November 2025.

NPPES Registry Identity

NPI1376405738
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameNIANYAO XIAO
Location Address125 HARTWELL AVELexington, MA 02421-3100
Mailing Address125 Hartwell AveLexington, MA 02421-3100 · (781) 861-0890
Phone(781) 861-0890
Sole ProprietorYes
Enumeration DateNovember 24, 2025
NPPES CertifiedNovember 24, 2025
✔ NPI 1376405738 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
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 Nianyao Xiao's NPI number?

The NPI number for Nianyao Xiao is 1376405738. It was assigned to this individual provider in the NPPES registry on November 24, 2025.

Where is Nianyao Xiao located?

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

What is Nianyao Xiao'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 Nianyao Xiao was last updated on November 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.