Mazen Al-Hamwy, MD

Medicare activity in 2024

Official CMS public-use data for Mazen Al-Hamwy, 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. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)1,214 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,127 services
3. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)405 services
4. Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (93296)275 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)255 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%
• Heart failure69%
• Arthritis52%
• Ischemic heart disease45%
• Diabetes39%

Hospitals where Mazen Al-Hamwy works

Medicare's Facility Affiliation Data lists Mazen Al-Hamwy 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.

• Cherokee Nation W W Hastings Indian HospitalTahlequah, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370171
• Haskell Regional Hospital, IncStigler, OK · Critical Access Hospital · Emergency services: listed by Medicare · CCN 371335
• Northeastern Health SystemTahlequah, OK · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 370089
• Saint Francis Hospital MuskogeeMuskogee, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370025
• Wagoner Community HospitalWagoner, OK · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 370166

Practice locations

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

• 3720 W Broadway StMuskogee, OK 74401 (918) 910‑5301

Specialties

• Cardiovascular Disease (Cardiology)primary
• Internal Medicinealso

Find other Cardiovascular Disease (Cardiology) doctors in Oklahoma →

Other cardiologists in Muskogee

Clinicians with the same Medicare primary specialty in Muskogee, OK — not a recommendation.

• Satish Kohli, MD
• Jack W. Casas, MD
• Jackson Wong-Sick-Hong, MD
• Mohamad Mahayni, MD
• Debasish Chaudhuri, MD
• Pradyumna Agasthi, MD
• Taraka V. Gadiraju, MD

All cardiologists in Muskogee →

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