Erin H. Healy, MD

Medicare activity in 2024

Official CMS public-use data for Erin H. Healy, 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)325 services
2. Calculation of radiation therapy dose (77300)163 services
3. Design and construction of complex radiation treatment device (77334)151 services
4. Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)120 services
5. Radiation treatment management, 5 treatment sessions (77427)98 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 pressure72%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)69%
• Arthritis48%
• Diabetes40%
• Osteoporosis28%

Hospitals where Erin H. Healy works

Medicare's Facility Affiliation Data lists Erin H. Healy 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 Erin H. Healy is enrolled with Medicare (CMS data updated October 2, 2026).

• 101 the City Dr SOrange, CA 92868 (714) 456‑5508

Group practices

Medicare enrollment lists Erin H. Healy as a member of this group (CMS data updated October 2, 2026).

• UC Regents Department of Radiation Oncology16 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in California →

Other radiation oncologists in Orange

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

• Caressa Y. Hui, MD
• Regiane S. De Andrade, MD
• Liam Ghiam, MD
• Shera B. Feinstein, MD
• Julie L. Santelli, MD
• Aaron B. Simon, MD
• Jeffrey V. Kuo, MD
• David S. Hong, MD

All radiation oncologists in Orange →

Other clinicians in UC Regents Department of Radiation Oncology

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

• Caressa Y. Hui, MD
• Regiane S. De Andrade, MD
• Liam Ghiam, MD
• Shera B. Feinstein, MD
• Julie L. Santelli, MD
• Steven W. Davis, 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