Nikolaos Diakos, MD

Medicare activity in 2024

Official CMS public-use data for Nikolaos Diakos, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)181 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)127 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)114 services
4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)112 services
5. Evaluation of lower heart chamber assist device (93750)105 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%
• Ischemic heart disease71%
• Heart failure58%
• Chronic kidney disease57%
• Atrial fibrillation52%

Hospitals where Nikolaos Diakos works

Medicare's Facility Affiliation Data lists Nikolaos Diakos 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.

• Baylor St. Luke's Medical CenterHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450193

Practice locations

Addresses where Nikolaos Diakos is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

• 2 Greenway Plz, Suite 900Houston, TX 77046
• 6624 Fannin StHouston, TX 77030 (713) 529‑5530
• 6624 Fannin St, Fl 20Houston, TX 77030 (713) 798‑7700
• 6720 Bertner AveHouston, TX 77030
• 6770 Bertner Ave, Suite C 350Houston, TX 77030 (713) 798‑1000

Group practices

Medicare enrollment lists Nikolaos Diakos as a member of this group (CMS data updated October 2, 2026).

• Baylor College of Medicine1,240 clinicians in the group

Specialties

• Interventional Cardiologyprimary
• Advanced Heart Failure and Transplant Cardiologyalso

Find other Interventional Cardiology doctors in Texas →

Other interventional cardiologists in Houston

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

• Qasim Z. Malik, MD
• Mouzamjha Faroqui, MD
• Mark J. Schnee, MD
• Harsha Ganga, MD
• Emerson C. Perin
• Salman J. Bandeali, MD
• Salman A. Arain, MD
• Weston C. Hickey, MD

All interventional cardiologists in Houston →

Other clinicians in Baylor College of Medicine

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

• Suwarna Bhide Deoskar, MD
• Johnathan Fraebel
• Karla Medrano-England, MD
• Muhammad Asim Siddique, MD
• Mohammed H. Merchant, MD
• Umer Virk, NP

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