Mireille El Hayek, MD

Medicare activity in 2024

Official CMS public-use data for Mireille El Hayek, 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.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)111 services
2. Hemoglobin a1c level (83036)104 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)81 services
4. Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)45 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)24 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%
• Diabetes57%
• Arthritis48%
• Ischemic heart disease41%
• Depression37%

Hospitals where Mireille El Hayek works

Medicare's Facility Affiliation Data lists Mireille El Hayek 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.

• St Lukes HospitalChesterfield, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260179

Practice locations

Addresses where Mireille El Hayek is enrolled with Medicare (CMS data updated October 2, 2026).

• 2315 Dougherty Ferry Rd, Suite 109bSaint Louis, MO 63122 (314) 965‑9133

Group practices

Medicare enrollment lists Mireille El Hayek as a member of this group (CMS data updated October 2, 2026).

• Endocrine Associates, LLC4 clinicians in the group

Specialties

• Endocrinologyprimary
• Internal Medicinealso

Find other Endocrinology doctors in Missouri →

Other endocrinologists in Saint Louis

Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.

• Kim A. Carmichael, MD
• Neelavathi Senkottaiyan, MD
• Cynthia Herrick, MD
• Max C. Petersen, MD
• Shellsea Portillo Canales, MD
• Maamoun Salam, MD
• Bassam I. Alhamer, MD
• Mariya Khan, MD

All endocrinologists in Saint Louis →

Other clinicians in Endocrine Associates, LLC

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

• Vaishaliben J. Ahir, MD
• Karen J. Chang-Chen, MD
• Soumya Nadella, MD

Clinician information

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