Clayton J. Chiapuzio, DO

Medicare activity in 2024

Official CMS public-use data for Clayton J. Chiapuzio, 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. Emergency department visit with high level of medical decision making (99285)342 services
2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)238 services
3. Critical care, first 30-74 minutes (99291)115 services
4. Emergency department visit with moderate level of medical decision making (99284)114 services
5. Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)22 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%
• Arthritis51%
• Diabetes45%
• Ischemic heart disease43%
• Anxiety42%

Hospitals where Clayton J. Chiapuzio works

Medicare's Facility Affiliation Data lists Clayton J. Chiapuzio 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.

• Henry Mayo Newhall HospitalValencia, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050624
• St Johns Regional Medical CenterOxnard, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050082

Practice locations

Addresses where Clayton J. Chiapuzio is enrolled with Medicare (CMS data updated October 2, 2026).

• 1600 N Rose AveOxnard, CA 93030 (805) 988‑2500
• 1798 N Garey AvePomona, CA 91767 (909) 865‑9500

Group practices

Medicare enrollment lists Clayton J. Chiapuzio as a member of this group (CMS data updated October 2, 2026).

• Cep America - California1,292 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Oxnard

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

• Ioan B. Belovarski, MD
• Robert J. Sterling, MD
• Ryan Shanahan, MD
• Daniel Orosco, DO
• Amy E. Olin, MD
• Kyle L. Brooks, MD
• Christine H. Chang, MD
• Lancelot A. Beier, MD

All emergency medicine doctors in Oxnard →

Other clinicians in Cep America - California

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

• Christopher L. Schaefer, DO
• Derek A. Orchard, DO
• Anthony A. Rodigin, MD
• John Gooch, MD
• Jose D. Orozco, MD
• Elizabeth A. Howse, 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