Douglas W. Vaughn, MD

Medicare activity in 2024

Official CMS public-use data for Douglas W. Vaughn, 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. Anesthesia for lens surgery (00142)25 services
2. Anesthesia for electroshock therapy (00104)20 services
3. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)19 services
4. Anesthesia for other procedure on large bowel using an endoscope (00811)16 services
5. Anesthesia for procedure on small and large bowel using an endoscope (00813)11 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 cholesterol72%
• Arthritis43%
• Ischemic heart disease33%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)32%
• Anxiety31%

Hospitals where Douglas W. Vaughn works

Medicare's Facility Affiliation Data lists Douglas W. Vaughn 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 Douglas W. Vaughn 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 Douglas W. Vaughn as a member of this group (CMS data updated October 2, 2026).

• Regents of the University of239 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in California →

Other anesthesiologists in Orange

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

• Michelle Hoangquocgia, DO
• Grant Lundie, MD
• Alan J. Hifko, MD
• Andrew Tseng, DO
• Andrew A. Heng, MD
• Janet X. Zhu, DO
• Claudia P. Moreno, MD
• Andrew Y. Germanovich, DO

All anesthesiologists in Orange →

Other clinicians in Regents of the University of

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

• Alan J. Hifko, MD
• Debra E. Morrison, MD
• Andrew Tseng, DO
• Robin A. Kim, MD
• Nilu G. Patel, CNA
• Denise G. Tafoya, CNA

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