Mazen Noureddin, MD

Medicare activity in 2024

Official CMS public-use data for Mazen Noureddin, 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 high level of medical decision making, if using time, 40 minutes or more (99215)117 services
2. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)51 services
3. Ultrasound scan of organ tissue for measuring elasticity (76981)49 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)45 services
5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)15 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%
• Diabetes43%
• Arthritis43%
• Ischemic heart disease43%
• Chronic kidney disease41%

Hospitals where Mazen Noureddin works

Medicare's Facility Affiliation Data lists Mazen Noureddin 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.

• Houston Methodist HospitalHouston, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450358
• Houston Methodist West HospitalHouston, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 670077

Practice locations

Addresses where Mazen Noureddin is enrolled with Medicare (CMS data updated October 2, 2026).

• 1155 Dairy Ashford Rd, Suite 200Houston, TX 77079 (281) 936‑9369
• 6445 Main St, Suite 2500Houston, TX 77030 (713) 441‑3150
• 6565 Fannin StHouston, TX 77030
• 6565 Fannin St, Suite 520Houston, TX 77030

Group practices

Medicare enrollment lists Mazen Noureddin as a member of these groups (CMS data updated October 2, 2026).

• Houston Methodist Specialty Physicians1,528 clinicians in the group
• Houston Liver Institute Inc2 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in Texas →

Other gastroenterologists in Houston

Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.

• Mayur Parepally, MD
• William A. Ross, MD
• Akshata Moghe, MD
• Hashim M. Khandwalla, MD
• Selvi Thirumurthi, MD
• Charles Meade, MD
• Thien-Bao P. Nguyen, MD
• Rabia S. Shakeel, MD

All gastroenterologists in Houston →

Other clinicians in Houston Methodist Specialty Physicians

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

• Tyler J. Fiebrich, PA
• Johnny P. Mai, MD
• Roy Rodriguez, NP
• Urooj Saeed, MD
• Joanna T. Chen, PA
• Larry Balle Ii, 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