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

MARIAELENA N TERZIS DO
NPI 1023710233
Pediatrics in Westford, MA

Q: What is Mariaelena Terzis's NPI number?

The NPI number for Mariaelena Terzis is 1023710233. It was assigned to this individual provider in the NPPES registry on March 21, 2023.

Q: What is Mariaelena Terzis's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Mariaelena Terzis was last updated on August 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since March 21, 2023

133 LITTLETON RD STE 101, WESTFORD, MA 01886(978) 577-0437 Get Directions Write a Review

NPPES record last updated: August 28, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 28, 2026, Mar 21, 2023 (2 updates tracked since 2023).

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About Mariaelena N Terzis Do NPPES

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

MARIAELENA N TERZIS DO (NPI 1023710233) is an individual pediatrics provider in Westford, Massachusetts, licensed in Massachusetts (1020705) and active in the NPI registry since March 2023.

NPPES Registry Identity

NPI1023710233

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameMARIAELENA N TERZISCredential: DO

Location Address133 LITTLETON RD STE 101Westford, MA 01886-3198

Mailing Address133 Littleton Rd Ste 101Westford, MA 01886-3198 · (978) 577-0437

Phone(978) 577-0437

Sole ProprietorNo

Enumeration DateMarch 21, 2023

Last NPPES UpdateAugust 28, 20262 updates tracked since enumeration

NPPES CertifiedAugust 28, 2026

✔ NPI 1023710233 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MA · 1020705

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

133 LITTLETON RD STE 101, Westford, MA 01886

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Other Providers at the Same Location NPPES 15

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

EMILY GROSSMAN CPNP

Nurse Practitioner (Pediatrics)