Brett I. Siegrist, MD

Medicare activity in 2024

Official CMS public-use data for Brett I. Siegrist, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)122 services
2. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)108 services
3. Ultrasound of both sides of head and neck blood flow (93880)62 services
4. Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts (93978)39 services
5. Ultrasound study of arm and leg arteries (93922)35 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%
• Arthritis54%
• Ischemic heart disease54%
• Diabetes39%
• Chronic kidney disease36%

Hospitals where Brett I. Siegrist works

Medicare's Facility Affiliation Data lists Brett I. Siegrist 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.

• Banner Desert Medical CenterMesa, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030065
• Chandler Regional Medical CenterChandler, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030036
• Mercy Gilbert Medical CenterGilbert, AZ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 030119

Practice locations

Addresses where Brett I. Siegrist is enrolled with Medicare (CMS data updated October 2, 2026).

• 2320 N 3rd StPhoenix, AZ 85004 (602) 340‑0201
• 2945 S Dobson RdMesa, AZ 85202 (480) 969‑4138
• 485 S Dobson Rd, Suite 115Chandler, AZ 85224 (602) 277‑7430

Group practices

Medicare enrollment lists Brett I. Siegrist as a member of this group (CMS data updated October 2, 2026).

• Arizona Advanced Surgery LLC95 clinicians in the group

Specialties

• Vascular Surgeryprimary
• General Surgeryalso

Find other Vascular Surgery doctors in Arizona →

Other vascular surgeons in Phoenix

Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.

• Edward G. Murphy, DO
• Avigayil S. Ribner, MD
• Casey L. Huston, MD
• Jeromy S. Brink, MD
• Julio A. Rodriguez Lopez, MD
• Lannery S. Lauvao, MD
• Faez A. Ayoob, MD
• John Pacanowski, MD

All vascular surgeons in Phoenix →

Other clinicians in Arizona Advanced Surgery LLC

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

• Yushma Pant, NP
• Nathan E. Bodily, MD
• David W. Smith, MD
• Peter Nakaji, MD
• Jeromy S. Brink, MD
• Taylor R. Leblanc, 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