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Anesthesiology

Steve C. Mendoza, MD

Works at hospitals in San Jose, CA · California

Summary

Dr. Steve C. Mendoza, MD is an anesthesiologist at 133 La Casa Via, Suite 150, Walnut Creek, CA 94598. Phone: (925) 210-8400. Accepts Medicare assignment. In 2024, Steve C. Mendoza had 313 Original Medicare patients and 419 services. NPI 1184649121. 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: 133 La Casa Via, Suite 150, Walnut Creek, CA 94598 · Directions (1 more location)
  • Phone: (925) 210‑8400
  • Medicare: Accepts Medicare assignment
  • Hospital: Good Samaritan Hospital
  • Group practice: G2 Anesthesia PC
  • Medical school: Creighton University School Of Medicine · graduated 1982 (44 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Steve C. Mendoza, 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 Steve C. Mendoza accept Medicare assignment?
Yes. Medicare's clinician data says Steve C. Mendoza 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 Steve C. Mendoza see?
In 2024, CMS data shows 313 Original Medicare patients and 419 services for Steve C. Mendoza. This counts Original Medicare only and measures volume, not quality.
What is Steve C. Mendoza's NPI number?
1184649121. 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 Steve C. Mendoza, 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 patients313
Services billed to Medicare419
Different services or procedures68
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Anesthesia for other procedure on large bowel using an endoscope (00811)50 services
  2. Anesthesia for lens surgery (00142)47 services
  3. Insertion of artery tube for blood sampling or infusion through skin (36620)25 services
  4. Ultrasonic guidance for blood vessel access (76937)25 services
  5. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)23 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%
  • Arthritis38%
  • Ischemic heart disease35%
  • Diabetes28%
  • Atrial fibrillation28%

Hospitals where Steve C. Mendoza works

Medicare's Facility Affiliation Data lists Steve C. Mendoza 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 Steve C. Mendoza is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Steve C. Mendoza as a member of this group (CMS data updated October 2, 2026).

  • G2 Anesthesia PC107 clinicians in the group

Specialties

Find other Anesthesiology doctors in California →

Other anesthesiologists in Walnut Creek

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

All anesthesiologists in Walnut Creek →

Other clinicians in G2 Anesthesia PC

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

Clinician information

CredentialMD
Medical schoolCreighton University School Of Medicine
Graduation year1982 (44 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1184649121
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