Carl J. Rossi Jr., MD

Medicare activity in 2024

Official CMS public-use data for Carl J. Rossi Jr., 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. Radiation treatment management, 5 treatment sessions (77427)407 services
2. Complex proton beam radiation treatment (77525)370 services
3. Calculation of radiation therapy dose (77300)350 services
4. Ct guidance for insertion of radiation therapy fields (77014)326 services
5. Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)273 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).

• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
• High cholesterol65%
• High blood pressure57%
• Arthritis34%
• Ischemic heart disease22%
• Diabetes21%

Hospitals where Carl J. Rossi Jr. works

Medicare's Facility Affiliation Data lists Carl J. Rossi Jr. 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.

• Sutter Roseville Medical CenterRoseville, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050309
• UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050025

Practice locations

Addresses where Carl J. Rossi Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 9730 Summers Ridge RdSan Diego, CA 92121 (858) 549‑7400

Group practices

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

• Proton Doctors Professional Corporation12 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in California →

Other radiation oncologists in San Diego

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

• Andrew L. Chang, MD
• Chika R. Nwachukwu, MD
• Prabhakar Tripuraneni, MD
• Norbert Kased, MD
• Andrew Bruggeman, MD
• Sunanda M. Pejavar, MD
• Ruben Carmona, MD
• Siavash M. Jabbari

All radiation oncologists in San Diego →

Other clinicians in Proton Doctors Professional Corporation

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

• Andrew L. Chang, MD
• Iain Macewan, MD
• Ari Katerelos, 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