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Anesthesiology

Anna A. Kotlarz, MD

Works at hospitals in Los Angeles, CA · Tualatin, OR · Murrieta, CA … · California, Oregon

Summary

Dr. Anna A. Kotlarz, MD is an anesthesiologist at 25500 Medical Ctr Dr, Murrieta, CA 92562. Phone: (951) 696-6000. Accepts Medicare assignment. In 2024, Anna A. Kotlarz had 59 Original Medicare patients and 78 services. NPI 1386140499. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Anna A. Kotlarz, 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 Anna A. Kotlarz accept Medicare assignment?
Yes. Medicare's clinician data says Anna A. Kotlarz 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 Anna A. Kotlarz see?
In 2024, CMS data shows 59 Original Medicare patients and 78 services for Anna A. Kotlarz. This counts Original Medicare only and measures volume, not quality.
What is Anna A. Kotlarz's NPI number?
1386140499. 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 Anna A. Kotlarz, 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 patients59
Services billed to Medicare78
Different services or procedures36
Participating Medicare providerYes
Average age of these patients72

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 pressure73%
  • High cholesterol73%
  • Arthritis44%
  • Ischemic heart disease34%
  • Chronic kidney disease32%
  • Diabetes29%

Hospitals where Anna A. Kotlarz works

Medicare's Facility Affiliation Data lists Anna A. Kotlarz 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 Anna A. Kotlarz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Anna A. Kotlarz as a member of these groups (CMS data updated October 2, 2026).

  • Cedars-Sinai Medical Care Foundation1,692 clinicians in the group
  • Oregon Anesthesiology Group PC232 clinicians in the group
  • Temecula Valley Anesthesia Partners Inc34 clinicians in the group
  • Rancho Springs Anesthesia Partners Inc32 clinicians in the group
  • Inland Valley Anesthesia Partners Inc31 clinicians in the group

Specialties

Find other Anesthesiology doctors in California →

Other anesthesiologists in Murrieta

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

All anesthesiologists in Murrieta →

Other clinicians in Cedars-Sinai Medical Care Foundation

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

Clinician information

CredentialMD
Graduation year2018 (8 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1386140499
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