Xiao Ying S. Yao, MD

Medicare activity in 2024

Official CMS public-use data for Xiao Ying S. Yao, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)215 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)144 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)88 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)45 services
5. Influenza vaccine, inactivated (90653)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 cholesterol69%
• High blood pressure62%
• Osteoporosis26%
• Arthritis21%
• Diabetes20%
• Chronic kidney disease19%

Practice locations

Addresses where Xiao Ying S. Yao is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

• 131 Stony Cir, Suite 1600Santa Rosa, CA 95401 (707) 541‑7800
• 15400 Los Gatos BlvdLos Gatos, CA 95032 (408) 739‑6000
• 370 Distel CirLos Altos, CA 94022 (650) 254‑5200
• 3838 California StSan Francisco, CA 94118
• 701 E El Camino RealMountain View, CA 94040 (650) 691‑6174

Group practices

Medicare enrollment lists Xiao Ying S. Yao as a member of this group (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in California →

Other family doctors in Santa Rosa

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

• Brian Gambardella, MD
• Tonya M. Hoffman, MD
• Eduardo Alvarado, MD
• Jacklyn Cheng, MD
• Zachary D. Anderson, DO
• Andrew I. Schwartz, DO
• Elizabeth Braunreuther, MD
• Joni L. McAtee, MD

All family doctors in Santa Rosa →

Other clinicians in Sutter Bay Medical Foundation

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

• Fathima Suhail, MD
• Vatche K. Bezdikian, MD
• Jeffrey B. Randall, MD
• Lisa J. Chandler, MD
• Erica Witek
• Amy Morishima, 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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
4. Medicare Care Compare — official Medicare tool to look up clinicians