Huijia J. Chen, MD

Medicare activity in 2024

Official CMS public-use data for Huijia J. Chen, 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. Injection, gadobutrol, 0.1 ml (A9585)4,125 services
2. Screening mammography (77067)885 services
3. Screening 3d breast mammography (77063)884 services
4. X-ray of chest, 1 view (71045)262 services
5. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)189 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 cholesterol75%
• High blood pressure66%
• Arthritis45%
• Osteoporosis31%
• Anxiety24%
• Diabetes23%

Hospitals where Huijia J. Chen works

Medicare's Facility Affiliation Data lists Huijia J. Chen 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.

• John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
• John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050180

Practice locations

Addresses where Huijia J. Chen is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.

• 1601 Ygnacio Valley RdWalnut Creek, CA 94598 (925) 295‑1545
• 1601 Ygnacio Vly RdWalnut Creek, CA 94596 (925) 939‑3000
• 177 La Casa Via, Suite 100Walnut Creek, CA 94598 (925) 296‑7150
• 2410 High School AveConcord, CA 94520 (925) 687‑5600
• 2540 E StConcord, CA 94520 (925) 674‑2228

Group practices

Medicare enrollment lists Huijia J. Chen as a member of these groups (CMS data updated October 2, 2026).

• Bay Imaging Consultants Medical Group Inc146 clinicians in the group
• John Muir Trauma Physicians Billing Service113 clinicians in the group
• John Muir Magnetic Imaging Center57 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in California →

Other radiologists in Walnut Creek

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

• Emily Huang, MD
• Austin A. Kwong, MD
• Ronald Chan, MD
• Jeffrey Huang, MD
• Eamon K. Kato, MD
• Tammy Sung, MD
• Caroline D. Sherbourne, MD
• Nicholas S. Leslein, MD

All radiologists in Walnut Creek →

Other clinicians in Bay Imaging Consultants Medical Group Inc

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

• Ronald Chan, MD
• Keith M. Tao, MD
• Jeffrey Huang, MD
• Vishal Panchal, MD
• Daniel Kim, MD
• Kevin Hsu, 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