1. Home
  2. Directory
  3. California
  4. Palo Alto
  5. Pediatrics
  6. NPI Profile

ETHAN JOSEPH PEREIRA VIEIRA MD
NPI 1215721139
Pediatrics in Palo Alto, CA

Active since April 07, 2025
725 WELCH RD, PALO ALTO, CA 94304(650) 497-8979 Get Directions Write a Review

NPPES record last updated: December 21, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Dec 21, 2025, Apr 7, 2025 (2 updates tracked since 2025).

About Ethan Joseph Pereira Vieira Md NPPES

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

ETHAN JOSEPH PEREIRA VIEIRA MD (NPI 1215721139) is an individual pediatrics provider in Palo Alto, California, licensed in California (PTL19476) and active in the NPI registry since April 2025.

NPPES Registry Identity

NPI1215721139
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameETHAN JOSEPH PEREIRA VIEIRACredential: MD
Location Address725 WELCH RDPalo Alto, CA 94304-1601
Mailing Address725 Welch RdPalo Alto, CA 94304-1601 · (650) 497-8979
Phone(650) 497-8979
Sole ProprietorNo
Enumeration DateApril 7, 2025
Last NPPES UpdateDecember 21, 20252 updates tracked since enumeration
NPPES CertifiedDecember 21, 2025
✔ NPI 1215721139 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · PTL19476
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.
725 WELCH RD, Palo Alto, CA 94304
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.

EIRI INENAGA MS, OTR/L
Occupational Therapist (Pediatrics)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8218
WENDY LEIGH ADAMS ARNP
Nurse Practitioner (Neonatal)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
KEVIN WEI-HAN CHI MD
Pediatrics
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
ASHEEN RAMA MD
Anesthesiology (Pediatric Anesthesiology)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
CRYSTAL LEE MACKALL MD
Pediatrics (Pediatric Hematology-Oncology)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
KRISTI LYNNE O'CONNOR OT
Occupational Therapist
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
LAUREN GENNA ROOS NP
Nurse Practitioner
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
SHALINI MITTAL MD
Hospitalist
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000

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 Ethan Vieira's NPI number?

The NPI number for Ethan Vieira is 1215721139. It was assigned to this individual provider in the NPPES registry on April 7, 2025.

Where is Ethan Vieira located?

Ethan Vieira practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8979.

What is Ethan Vieira's specialty?

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

When was this NPI record last updated?

The NPPES record for Ethan Vieira was last updated on December 21, 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.