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

Internal Medicine

Qais Ayouby, MD

Works at hospitals in Rancho Mirage, CA · Murrieta, CA · Temecula, CA · California

Summary

Dr. Qais Ayouby, MD is an internal medicine doctor at 3576 Arlington Ave, Suite 205, Riverside, CA 92506. Accepts Medicare assignment. In 2024, Qais Ayouby had 1,693 Original Medicare patients and 30,673 services. NPI 1154884351. 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 Qais Ayouby, 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 Qais Ayouby accept Medicare assignment?
Yes. Medicare's clinician data says Qais Ayouby 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 Qais Ayouby see?
In 2024, CMS data shows 1,693 Original Medicare patients and 30,673 services for Qais Ayouby. This counts Original Medicare only and measures volume, not quality.
What is Qais Ayouby's NPI number?
1154884351. 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 Qais Ayouby, 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 patients1,693
Services billed to Medicare30,673
Different services or procedures69
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Membrane graft or membrane wrap, per square centimeter (Q4205)8,712 services
  2. Helicoll, per square centimeter (Q4164)3,741 services
  3. Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow (G0181)1,889 services
  4. Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)1,763 services
  5. Advance care planning, first 30 minutes (99497)1,608 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%
  • Arthritis70%
  • Diabetes55%
  • Depression45%
  • Ischemic heart disease44%

Hospitals where Qais Ayouby works

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

  • 3576 Arlington Ave, Suite 205Riverside, CA 92506
  • 3583 Hawthorne DrCorona, CA 92881
  • 44045 Margarita Rd, Suite 101Temecula, CA 92592

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Riverside

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

All internal medicine doctors in Riverside →

Clinician information

CredentialMD
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1154884351
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