Shannon L. St Clair, MD

Medicare activity in 2024

Official CMS public-use data for Shannon L. St Clair, 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)607 services
2. Ct scan head or brain without contrast (70450)462 services
3. Ct scan of abdomen and pelvis with contrast (74177)279 services
4. X-ray of chest, 2 views (71046)193 services
5. Ct scan of blood vessels of chest with contrast (71275)182 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%
• Arthritis55%
• Ischemic heart disease41%
• Chronic kidney disease39%
• Diabetes37%

Hospitals where Shannon L. St Clair works

Medicare's Facility Affiliation Data lists Shannon L. St Clair 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.

• Holyoke Medical CenterHolyoke, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220024
• Mercy Health St Ritas Medical CenterLima, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360066
• Mercy Medical CenterSpringfield, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220066
• Southeast Iowa Regional Medical CenterWest Burlington, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160057
• University of Iowa Health Care Medical Center DownIowa City, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160029

Practice locations

Addresses where Shannon L. St Clair is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 32; the Medicare profile lists all.

• 1045 W Stephenson StFreeport, IL 61032 · Freeport Memorial Hospital (815) 599‑6000
• 10654 Breckenridge DrSan Diego, CA 92131 · Lima Radiological Associates (419) 226‑9023
• 1120 N Melvin StGibson City, IL 60936 · Gibson Community Hospital Association (217) 784‑4251
• 1202 21st AveRock Valley, IA 51247 · Hegg Memorial Hospital (712) 476‑8000
• 1237 Via CandelasOceanside, CA 92056 · Central Kentucky Radiology PLLC (859) 219‑0542

Group practices

Medicare enrollment lists Shannon L. St Clair as a member of these groups (CMS data updated October 2, 2026).

• State University of Iowa1,897 clinicians in the group
• The Duluth Clinic Ltd1,144 clinicians in the group
• Avera McKennan959 clinicians in the group
• Reliant Medical Group Inc640 clinicians in the group
• Cumberland County Hospital System Inc574 clinicians in the group
• Hannibal Regional Healthcare System Inc272 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Illinois →

Other radiologists in Freeport

Clinicians with the same Medicare primary specialty in Freeport, IL — not a recommendation.

• Veronica Y. Ruvo, DO
• Bryan Suchecki, MD
• Waheed Jalalzai, MD
• Colin M. Thompson, MD
• Adham Shoujaa, MD
• Michael McConnell, DO
• Steven Bach, DO
• Filip Turcer, MD

All radiologists in Freeport →

Other clinicians in State University of Iowa

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

• Lesley J. Haro
• Kimberly S. Delcour, DO
• Michelle L. Schnack, NP
• Abigail M. Scrogum, MD
• Jaclyn M. Haugsdal, MD
• Evangelos N. Pallis, 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