Guillermo Gonzalez-Araiza, MD

Medicare activity in 2024

Official CMS public-use data for Guillermo Gonzalez-Araiza, 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. X-ray of chest, 1 view (71045)380 services
2. X-ray of chest, 2 views (71046)356 services
3. Ct scan of blood vessels of chest with contrast (71275)149 services
4. Ct scan of blood vessels of abdomen and pelvis with contrast (74174)96 services
5. Ct scan of abdomen and pelvis with contrast (74177)82 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%
• Arthritis60%
• Ischemic heart disease46%
• Chronic kidney disease45%
• Diabetes38%

Hospitals where Guillermo Gonzalez-Araiza works

Medicare's Facility Affiliation Data lists Guillermo Gonzalez-Araiza 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.

• Mercy Hospital JeffersonCrystal City, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260023
• Mercy Hospital LincolnTroy, MO · Critical Access Hospital · Emergency services: listed by Medicare · CCN 261319
• Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 260077
• Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260020
• Mercy Hospital WashingtonWashington, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260052

Practice locations

Addresses where Guillermo Gonzalez-Araiza is enrolled with Medicare (CMS data updated October 2, 2026).

• 615 S New Ballas RdSaint Louis, MO 63141 (314) 251‑6031
• 901 E 5th StWashington, MO 63090 (636) 239‑8250

Group practices

Medicare enrollment lists Guillermo Gonzalez-Araiza as a member of this group (CMS data updated October 2, 2026).

• West County Radiological Group Inc102 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Missouri →

Other radiologists in Saint Louis

Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.

• Janice W. Semenkovich, MD
• Robert D. Seelig, MD
• Cindy X. Zhang, MD
• John Cooper, MD
• Constantine Raptis, MD
• Robert C. McKinstry, MD
• Tabassum Ahmad, MD
• Ritu Bordia, MD

All radiologists in Saint Louis →

Other clinicians in West County Radiological Group Inc

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

• Jane D. Yin, MD
• Cindy X. Zhang, MD
• Alex Cook, DO
• Mark A. Chambers, MD
• Paul S. Sander, MD
• Andrew R. Martine, 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