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Orthopedic Surgery

Ari R. Youderian, MD

Works at hospitals in Laguna Hills, CA · Mission Viejo, CA · California

Summary

Dr. Ari R. Youderian, MD is an orthopedic surgeon at 22 Odyssey, Suite 205, Irvine, CA 92618. Phone: (949) 586-3200. Accepts Medicare assignment. In 2024, Ari R. Youderian had 551 Original Medicare patients and 6,059 services. NPI 1083818173. 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 Ari R. Youderian, 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 Ari R. Youderian accept Medicare assignment?
Yes. Medicare's clinician data says Ari R. Youderian 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 Ari R. Youderian see?
In 2024, CMS data shows 551 Original Medicare patients and 6,059 services for Ari R. Youderian. This counts Original Medicare only and measures volume, not quality.
What is Ari R. Youderian's NPI number?
1083818173. 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 Ari R. Youderian, 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 patients551
Services billed to Medicare6,059
Different services or procedures87
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Therapy procedure using functional activities (97530)1,651 services
  2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,246 services
  3. Therapy procedure using manual technique, each 15 minutes (97140)866 services
  4. X-ray of shoulder, minimum of 2 views (73030)623 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)339 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 cholesterol75%
  • High blood pressure74%
  • Arthritis70%
  • Diabetes26%
  • Ischemic heart disease26%
  • Depression25%

Hospitals where Ari R. Youderian works

Medicare's Facility Affiliation Data lists Ari R. Youderian 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 Ari R. Youderian is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ari R. Youderian as a member of this group (CMS data updated October 2, 2026).

  • Orthowest47 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in California →

Other orthopedic surgeons in Irvine

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

All orthopedic surgeons in Irvine →

Other clinicians in Orthowest

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

Clinician information

CredentialMD
Medical schoolChicago College Of Medicine And Surgery
Graduation year2006 (20 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1083818173
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