Gene-Fu F. Liu, MD

Medicare activity in 2024

Official CMS public-use data for Gene-Fu F. 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. Ct guidance for insertion of radiation therapy fields (77014)677 services
2. Calculation of radiation therapy dose (77300)406 services
3. Design and construction of complex radiation treatment device (77334)366 services
4. Radiation treatment management, 5 treatment sessions (77427)263 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)102 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%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)64%
• Arthritis52%
• Ischemic heart disease28%
• Diabetes24%

Hospitals where Gene-Fu F. Liu works

Medicare's Facility Affiliation Data lists Gene-Fu F. 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.

• Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050603
• Providence Mission HospitalMission Viejo, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050567
• UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Gene-Fu F. Liu is enrolled with Medicare (CMS data updated October 2, 2026).

• 27700 Medical Ctr RdMission Viejo, CA 92691 (949) 573‑9560
• 27799 Medical Ctr Rd, Suite 120Mission Viejo, CA 92691 (949) 573‑9560

Group practices

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

• Mission Viejo Radiation Oncology Corp2 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in California →

Other radiation oncologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

• William W. Chou, MD
• Paul J. Miller, MD
• Linda W. Chan, MD
• Diane C. Ling, MD
• Andrew Zhang, MD
• Ly Do, MD
• Ryan Miller, MD
• Nicholas J. Eustace, MD

All radiation oncologists in California →

Other clinicians in Mission Viejo Radiation Oncology Corp

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

• William W. Chou, 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