Quanjing Liu, MD

Medicare activity in 2024

Official CMS public-use data for Quanjing Liu, 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 moderate level of decision making, if using time, 30 minutes or more (99214)140 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)128 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)53 services
4. Administration of influenza virus vaccine (G0008)21 services
5. Influenza vaccine, inactivated (90653)20 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%
• Arthritis29%
• Diabetes25%
• Chronic kidney disease18%
• Osteoporosis18%

Hospitals where Quanjing Liu works

Medicare's Facility Affiliation Data lists Quanjing Liu 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

Practice locations

Addresses where Quanjing Liu is enrolled with Medicare (CMS data updated October 2, 2026).

• 301 Old San Francisco RdSunnyvale, CA 94086 (408) 739‑6000

Group practices

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

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Sunnyvale

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

• Robert Silva, MD
• Tan Nguyen, MD
• Rijuna Menon, MD
• Shadan Ghaemian, MD
• Euna Kim, DO
• Aisha Amin, MD
• Alexander Wong, MD
• Andrew Y. Lin, MD

All internal medicine doctors in Sunnyvale →

Other clinicians in Sutter Bay Medical Foundation

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

• Meghan McCurry, DO
• Bahar Aghighi, MD
• Kelly S. Derbin, MD
• Misty Navarro, MD
• Melanie Tong, PT
• Patrick J. Tomafsky, PA

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