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

Emergency Medicine

Stewart F. Da Silva, DO

Works at hospitals in Mesa, AZ · Arizona

Summary

Dr. Stewart F. Da Silva, DO is an emergency medicine doctor at 6644 E Baywood Ave, Mesa, AZ 85206. Phone: (480) 981-2000. Accepts Medicare assignment. In 2024, Stewart F. Da Silva had 544 Original Medicare patients and 621 services. NPI 1891318309. 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: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 6644 E Baywood Ave, Mesa, AZ 85206 · Directions (2 more locations)
  • Phone: (480) 981‑2000
  • Medicare: Accepts Medicare assignment
  • Hospital: Dignity Health Arizona General Hospital
  • Group practice: Tec Emergency Physicians of Arizona, LLC (+1 more)
  • Medical school: graduated 2020 (6 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Stewart F. Da Silva, 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 Stewart F. Da Silva accept Medicare assignment?
Yes. Medicare's clinician data says Stewart F. Da Silva 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 Stewart F. Da Silva see?
In 2024, CMS data shows 544 Original Medicare patients and 621 services for Stewart F. Da Silva. This counts Original Medicare only and measures volume, not quality.
What is Stewart F. Da Silva's NPI number?
1891318309. 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 Stewart F. Da Silva, 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 patients544
Services billed to Medicare621
Different services or procedures29
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)292 services
  2. Critical care, first 30-74 minutes (99291)122 services
  3. Emergency department visit with moderate level of medical decision making (99284)119 services
  4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)38 services
  5. Emergency department visit with low level of medical decision making (99283)12 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 pressure75%
  • High cholesterol75%
  • Arthritis54%
  • Ischemic heart disease44%
  • Chronic kidney disease41%
  • Diabetes37%

Hospitals where Stewart F. Da Silva works

Medicare's Facility Affiliation Data lists Stewart F. Da Silva 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.

Practice locations

Addresses where Stewart F. Da Silva is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Stewart F. Da Silva as a member of these groups (CMS data updated October 2, 2026).

  • Tec Emergency Physicians of Arizona, LLC153 clinicians in the group
  • Emergency Physicians Southwest PC98 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Arizona →

Other emergency medicine doctors in Mesa

Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.

All emergency medicine doctors in Mesa →

Other clinicians in Tec Emergency Physicians of Arizona, LLC

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

Clinician information

CredentialDO
Graduation year2020 (6 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1891318309
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