Justin L. Arunthamakun, MD

Medicare activity in 2024

Official CMS public-use data for Justin L. Arunthamakun, 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 35 minutes (99232)42 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)24 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)23 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)21 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%
• Atrial fibrillation75%
• Ischemic heart disease73%
• Heart failure63%
• Arthritis45%

Hospitals where Justin L. Arunthamakun works

Medicare's Facility Affiliation Data lists Justin L. Arunthamakun 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 Scott & White Medical Center GrapevineGrapevine, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450563
• Baylor Scott & White the Heart Hospital PlanoPlano, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 670025
• Baylor Scott and White Medical Center Frisco at PGFrisco, TX · Acute Care Hospital · Emergency services: listed by Medicare · CCN 670346
• Baylor Scott and White Medical Center McKinneyMcKinney, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 670082
• Baylor Scott and White the Heart Hospital CorinthDenton, TX · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 670347

Practice locations

Addresses where Justin L. Arunthamakun is enrolled with Medicare (CMS data updated October 2, 2026).

• 5236 W University, 4900 the Heart GroupMcKinney, TX 75071 (469) 800‑5350

Group practices

Medicare enrollment lists Justin L. Arunthamakun as a member of this group (CMS data updated October 2, 2026).

• Healthtexas Provider Network2,697 clinicians in the group

Specialties

• Cardiac Electrophysiologyprimary

Find other Cardiac Electrophysiology doctors in Texas →

Other cardiac electrophysiologists in Texas

Clinicians with the same Medicare primary specialty in Texas — not a recommendation.

• Alejandro Vidal Margenat, MD
• June K. Pickett, MD
• Rajeev Joshi, MD
• David J. Kessler, MD
• Gerald J. Gallinghouse, MD
• Justin T. Saunders, MD
• Tapan G. Rami, MD
• Vassilis Dimas, MD

All cardiac electrophysiologists in Texas →

Other clinicians in Healthtexas Provider Network

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

• Kiran S. Venincasa, MD
• Eric S. Sims, PA
• Jennifer Pehnke, CNA
• Sherry N. Igbinigie, MD
• Inayatullah Wahdatyar, MD
• Lucas Richardson, 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