Jianyu Xu, MD

Medicare activity in 2024

Official CMS public-use data for Jianyu Xu, 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, romosozumab-aqqg, 1 mg (J3111)44,310 services
2. Injection, denosumab, 1 mg (J0897)10,380 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)614 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)447 services
5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)413 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 pressure70%
• Osteoporosis61%
• Arthritis45%
• Diabetes38%
• Chronic kidney disease33%

Hospitals where Jianyu Xu works

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

• 2700 Grant St, Suite 200Concord, CA 94520 (925) 674‑0500

Group practices

Medicare enrollment lists Jianyu Xu as a member of this group (CMS data updated October 2, 2026).

• John Muir Physician Network494 clinicians in the group

Specialties

• Endocrinologyprimary

Find other Endocrinology doctors in California →

Other endocrinologists in Concord

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

• Lindsay Chong, MD
• Hadeel S. Al-Marsumi, MD
• Yeran Bao, MD
• Frank S. Tzeng, MD
• Anna R. Chang, MD

All endocrinologists in Concord →

Other clinicians in John Muir Physician Network

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

• Nilima Desai, MD
• Uyen-Chi Huynh, MD
• Andrea Agcaoili, DO
• Jennifer Y. O'Neill-Cha, MD
• Breanna Tetreault, DO
• Svetlana Gutierrez, 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