Chul Y. Chung, MD

Medicare activity in 2024

Official CMS public-use data for Chul Y. Chung, 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. Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)1,561 services
2. X-ray of chest, 1 view (71045)904 services
3. Screening mammography (77067)305 services
4. Screening 3d breast mammography (77063)304 services
5. Ct scan head or brain without contrast (70450)297 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%
• Diabetes42%
• Chronic kidney disease34%
• Ischemic heart disease29%

Hospitals where Chul Y. Chung works

Medicare's Facility Affiliation Data lists Chul Y. Chung 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.

• El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308
• Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050380
• Santa Clara Valley Medical CenterSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050038
• Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050523
• Sutter Solano Medical CenterVallejo, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050101

Practice locations

Addresses where Chul Y. Chung is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

• 101 B Gale Wilson Blvd, Suite 100Fairfield, CA 94533 (707) 646‑4646
• 1100 B Gale Wilson BlvdFairfield, CA 94533 (707) 646‑4646
• 1101 B Gale Wilson Blvd, Suite 100Fairfield, CA 94533 (707) 646‑4646
• 1601 Ygnacio Valley RdWalnut Creek, CA 94598 (925) 947‑5320
• 751 S Bascom AveSan Jose, CA 95128 (408) 885‑5000

Group practices

Medicare enrollment lists Chul Y. Chung as a member of these groups (CMS data updated October 2, 2026).

• County of Santa Clara1,022 clinicians in the group
• Bay Imaging Consultants Medical Group Inc146 clinicians in the group
• Solano Diagnostics Partners a Calif Limited Partnership45 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in California →

Other radiologists in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CA — not a recommendation.

• Lucas P. Hiller, MD
• Phillip Wong, MD
• Ryan Franke, MD
• Reema Agarwal, MD
• Harun Ozer, MD
• Michael J. Martinucci, MD
• Shannon Gaffney, DO
• John P. Lin, MD

All radiologists in Fairfield →

Other clinicians in County of Santa Clara

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

• Fatima Jibrel, MD
• Raveena Manem, MD
• Saraswati Srikantiah, MD
• Nishita Nigam, MD
• Jeffrey C. Sung, MD
• Andrea S. Cervenka, 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