Shelley Y. Xu, DO

Medicare activity in 2024

Official CMS public-use data for Shelley Y. 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)305 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)246 services
3. Hospital discharge day management, more than 30 minutes (99239)135 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)82 services
5. Critical care, first 30-74 minutes (99291)14 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%
• Chronic kidney disease54%
• Heart failure45%
• Diabetes43%
• Arthritis43%

Hospitals where Shelley Y. Xu works

Medicare's Facility Affiliation Data lists Shelley Y. 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.

• Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050043
• Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050305

Practice locations

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

• 2001 Dwight WayBerkeley, CA 94704 (510) 204‑1591
• 2450 Ashby AveBerkeley, CA 94705
• 2450 Ashby Ave, Rm 5505Berkeley, CA 94705 (510) 204‑4444
• 3200 Kearney StFremont, CA 94538 (510) 490‑1222
• 350 Hawthorne AveOakland, CA 94609

Group practices

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

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Hospitalistprimary

Find other Hospitalist doctors in California →

Other hospitalists in Berkeley

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

• Amit Chadha, MD
• Vikram Sharma, MD
• Armond M. Esmaili, MD
• Alejo Santa Cruz, MD
• Trissa A. Baden, MD
• Lisa J. Chandler, MD
• Joseph B. Nakhleh, MD
• Amber Harmon, MD

All hospitalists in Berkeley →

Other clinicians in Sutter Bay Medical Foundation

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

• Andrew Haskell, MD
• Andrew Kuo, MD
• Johnny Cai, DO
• Kerri Colbert, OT
• Benjamin W. Chang, NP
• Brad Naylor, DPM

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