Shaun D. Carstairs, MD

Medicare activity in 2024

Official CMS public-use data for Shaun D. Carstairs, 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 only (93010)61 services
2. Emergency department visit with high level of medical decision making (99285)56 services
3. Emergency department visit with moderate level of medical decision making (99284)40 services
4. Critical care, first 30-74 minutes (99291)23 services
5. X-ray of chest, 1 view (71045)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 cholesterol73%
• Diabetes56%
• Arthritis51%
• Anxiety46%
• Chronic kidney disease39%

Hospitals where Shaun D. Carstairs works

Medicare's Facility Affiliation Data lists Shaun D. Carstairs 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.

• Morehouse General HospitalBastrop, LA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 190116
• Rolling Plains Memorial HospitalSweetwater, TX · Acute Care Hospital · Emergency services: listed by Medicare · CCN 450055
• Scripps Mercy HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050077

Practice locations

Addresses where Shaun D. Carstairs is enrolled with Medicare (CMS data updated October 2, 2026).

• 323 W Walnut AveBastrop, LA 71220 (318) 283‑3621
• 435 H StChula Vista, CA 91910 (619) 691‑7290

Group practices

Medicare enrollment lists Shaun D. Carstairs as a member of these groups (CMS data updated October 2, 2026).

• Morehouse General Hospital35 clinicians in the group
• Chula Vista Emergency Room Physicians a Medical Corporation29 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Louisiana →

Other emergency medicine doctors in Bastrop

Clinicians with the same Medicare primary specialty in Bastrop, LA — not a recommendation.

• Brett Burnett, MD
• Blake R. Denley, MD
• Sancia E. Bredy, MD
• Beau F. Domangue, MD
• Douglas Cushner, MD

All emergency medicine doctors in Bastrop →

Other clinicians in Morehouse General Hospital

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

• Brett Burnett, MD
• Glynn A. Riels, DO
• Deirdre D. Simmons, NP
• Sancia E. Bredy, MD
• Curtis Sanders, MD
• Mahmoud Sheikh-Khalil, 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