William F. Davis Iii, MD

Medicare activity in 2024

Official CMS public-use data for William F. Davis Iii, 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. Critical care, first 30-74 minutes (99291)147 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)94 services
3. Critical care, each additional 30 minutes (99292)62 services
4. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)61 services
5. Ultrasound scan of chest (76604)51 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%
• Diabetes46%
• Atrial fibrillation45%
• Arthritis44%
• Depression42%

Hospitals where William F. Davis Iii works

Medicare's Facility Affiliation Data lists William F. Davis Iii 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.

• Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
• Orange County Global Medical CenterSanta Ana, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050746

Practice locations

Addresses where William F. Davis Iii is enrolled with Medicare (CMS data updated October 2, 2026).

• 999 N Tustin Ave, Suite 109Santa Ana, CA 92705 (714) 954‑1185

Group practices

Medicare enrollment lists William F. Davis Iii as a member of this group (CMS data updated October 2, 2026).

• Western Medical Center Trauma Group Inc6 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in California →

Other general surgeons in Santa Ana

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

• Frank C. Nastanski, MD
• Nancy B. Way, MD
• Jin W. Sui, MD
• Christopher T. Lane, MD
• Andrea R. Dunkelman, MD
• Cindy L. Lee, MD
• Humberto Sauri, MD

All general surgeons in Santa Ana →

Other clinicians in Western Medical Center Trauma Group Inc

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

• Frank C. Nastanski, MD
• Jin W. Sui, MD
• Christopher T. Lane, MD
• Cindy L. Lee, MD
• Humberto Sauri, 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