Sean J. McAlister, MD

Medicare activity in 2024

Official CMS public-use data for Sean J. McAlister, 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. Emergency department visit with moderate level of medical decision making (99284)93 services
2. Emergency department visit with high level of medical decision making (99285)85 services
3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)60 services
4. Critical care, first 30-74 minutes (99291)19 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 cholesterol75%
• High blood pressure74%
• Arthritis35%
• Chronic kidney disease35%
• Diabetes31%
• Atrial fibrillation27%

Hospitals where Sean J. McAlister works

Medicare's Facility Affiliation Data lists Sean J. McAlister 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.

• Kauai Veterans Memorial HospitalWaimea, HI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 121300
• Samuel Mahelona Memorial HospitalKapaa, HI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 121306
• Wilcox Memorial HospitalLihue, HI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 120014

Practice locations

Addresses where Sean J. McAlister is enrolled with Medicare (CMS data updated October 2, 2026).

• 3-3420 Kuhio Hwy, Suite BLihue, HI 96766 (808) 245‑1500
• 4643 Waimea Canyon DrWaimea, HI 96796 (808) 338‑9431

Group practices

Medicare enrollment lists Sean J. McAlister as a member of these groups (CMS data updated October 2, 2026).

• Kauai Medical Clinic147 clinicians in the group
• Hawaii Emergency Physicians Associated Inc120 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Hawaii →

Other emergency medicine doctors in Lihue

Clinicians with the same Medicare primary specialty in Lihue, HI — not a recommendation.

• Ted Lee, MD
• Nicholas M. Leonard, MD
• Alexander W. Schermer, MD
• James J. Ham, MD
• Mike T. Tseng, MD
• Allon Amitai, MD
• Luke K. Metzker, DO
• Reid H. Tamanaha, MD

All emergency medicine doctors in Lihue →

Other clinicians in Kauai Medical Clinic

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

• Ted Lee, MD
• David Rovinsky, MD
• Katalin J. Terdik, DO
• Allen C. Johnson, MD
• Nicholas M. Leonard, MD
• Rachel A. Miller, PA

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