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Anesthesiology

Erin M. Stewart, MD

Works at hospitals in Stanford, CA · California

Summary

Dr. Erin M. Stewart, MD is an anesthesiologist at 300 Pasteur Dr, Stanford, CA 94305. Phone: (650) 723-4000. Accepts Medicare assignment. In 2024, Erin M. Stewart had 165 Original Medicare patients and 199 services. NPI 1407290281. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 300 Pasteur Dr, Stanford, CA 94305 · Directions
  • Phone: (650) 723‑4000
  • Medicare: Accepts Medicare assignment
  • Hospital: Stanford Health Care
  • Group practice: Stanford Health Care
  • Medical school: Georgetown University School Of Medicine · graduated 2013 (13 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Erin M. Stewart, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Erin M. Stewart accept Medicare assignment?
Yes. Medicare's clinician data says Erin M. Stewart accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Erin M. Stewart see?
In 2024, CMS data shows 165 Original Medicare patients and 199 services for Erin M. Stewart. This counts Original Medicare only and measures volume, not quality.
What is Erin M. Stewart's NPI number?
1407290281. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Erin M. Stewart, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients165
Services billed to Medicare199
Different services or procedures62
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Anesthesia for electroshock therapy (00104)31 services
  2. Insertion of artery tube for blood sampling or infusion through skin (36620)16 services
  3. Anesthesia for other procedure on large bowel using an endoscope (00811)13 services
  4. Anesthesia for other procedure on upper abdomen (00790)11 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure74%
  • High cholesterol73%
  • Arthritis45%
  • Diabetes37%
  • Chronic kidney disease33%
  • Anxiety32%

Hospitals where Erin M. Stewart works

Medicare's Facility Affiliation Data lists Erin M. Stewart at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

Addresses where Erin M. Stewart is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Erin M. Stewart as a member of this group (CMS data updated October 2, 2026).

  • Stanford Health Care3,122 clinicians in the group

Specialties

Find other Anesthesiology doctors in California →

Other anesthesiologists in Stanford

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

All anesthesiologists in Stanford →

Other clinicians in Stanford Health Care

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1407290281
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians