Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Emergency Medicine

Sergio Alvarez, MD

Sees patients in Mountain View, CA · California

Summary

Sergio Alvarez, MD (Emergency Medicine) is enrolled with Medicare at 1 practice location in Mountain View, CA. NPI 1013379031. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Sergio Alvarez, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
10Years since medical school (graduated 2016)
MaleGender (as listed)
Sutter Bay Medical FoundationGroup practice

Quick answers

Where does Sergio Alvarez see patients?
Medicare's clinician data lists 1 practice location in Mountain View, CA. Call before your visit to confirm the address.
What is Sergio Alvarez's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Sergio Alvarez accept Medicare assignment?
Yes. Medicare's clinician data says Sergio Alvarez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Sergio Alvarez offer telehealth?
Medicare's clinician data says Sergio Alvarez offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Sergio Alvarez?
(650) 691-6174, as listed in official Medicare / NPI Registry data.
What is Sergio Alvarez's NPI number?
1013379031. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Sergio Alvarez is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Sergio Alvarez as a member of this group (CMS data updated 2026-10-02).

  • Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Mountain View

Clinicians with the same Medicare primary specialty in Mountain View, CA — not a recommendation.

All emergency medicine doctors in Mountain View →

Clinician information

CredentialMD
Graduation year2016
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1013379031
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians