Cristina Olivas Chacon, MD

Medicare activity in 2024

Official CMS public-use data for Cristina Olivas Chacon, 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, 2 views (71046)342 services
2. Ct scan of abdomen and pelvis with contrast (74177)316 services
3. Ct scan of chest with contrast (71260)266 services
4. X-ray of chest, 1 view (71045)250 services
5. Ct scan of chest without contrast (71250)194 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%
• Arthritis48%
• Ischemic heart disease36%
• Anxiety35%
• Chronic kidney disease32%

Hospitals where Cristina Olivas Chacon works

Medicare's Facility Affiliation Data lists Cristina Olivas Chacon 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 Cristina Olivas Chacon is enrolled with Medicare (CMS data updated October 2, 2026).

• 615 S New Ballas RdSaint Louis, MO 63141 (314) 251‑6031

Group practices

Medicare enrollment lists Cristina Olivas Chacon 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.

• Monette C. Coletti, MD
• Aiad Zaza, MD
• Pamela K. Woodard, MD
• Govind S. Mattay, MD
• Donna M. Igou, MD
• Sherwin S. Chan, MD
• William H. McAlister, MD
• William P. James, 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.

• Monette C. Coletti, MD
• Donna M. Igou, MD
• Vikram A. Rao, MD
• Elizabeth A. Hermann, PA
• Alaina Scherer, MD
• Patricia G. Corder, 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