Fuki Hisama, MD

Medicare activity in 2024

Official CMS public-use data for Fuki Hisama, 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. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)22 services
2. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)22 services
3. 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)12 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 cholesterol60%
• High blood pressure54%
• Heart failure37%
• Ischemic heart disease28%
• Arthritis26%
• Atrial fibrillation26%

Hospitals where Fuki Hisama works

Medicare's Facility Affiliation Data lists Fuki Hisama 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.

• UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

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

• 101 the City Dr SOrange, CA 92868 (714) 456‑7004

Group practices

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

• UC Regents UCI Dept of Pediatrics8 clinicians in the group

Specialties

• Medical Genetics and Genomicsprimary

Find other Medical Genetics and Genomics doctors in California →

Other medical geneticists in California

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

• Touran M. Zadeh, MD
• Kristen M. Wigby, MD
• Stacy Gray, MD
• Yue Huang, MD
• Bruce A. Barshop, MD
• Suma P. Shankar
• Kristin C. Herman, MD
• David P. Dimmock, MD

All medical geneticists in California →

Other clinicians in UC Regents UCI Dept of Pediatrics

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

• Virginia E. Kimonis, MD
• Leslie Raffel, MD
• Cynthia Antonio, NP
• Natalie M. Gallant, MD
• Angela Myers, 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