Siavash M. Jabbari

Medicare activity in 2024

Official CMS public-use data for Siavash M. Jabbari, 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)493 services
2. Calculation of radiation therapy dose (77300)192 services
3. Radiation treatment management, 5 treatment sessions (77427)120 services
4. Design and construction of complex radiation treatment device (77334)97 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)59 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 pressure74%
• High cholesterol66%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)65%
• Arthritis44%
• Ischemic heart disease34%
• Diabetes27%

Hospitals where Siavash M. Jabbari works

Medicare's Facility Affiliation Data lists Siavash M. Jabbari 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.

• Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222
• Sharp Coronado Hospital and Healthcare CenterCoronado, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050234
• Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050100

Practice locations

Addresses where Siavash M. Jabbari is enrolled with Medicare (CMS data updated October 2, 2026).

• 3075 Health Ctr DrSan Diego, CA 92123 (858) 939‑5010
• 769 Medical Ctr CtChula Vista, CA 91911 (619) 502‑5851

Group practices

Medicare enrollment lists Siavash M. Jabbari as a member of this group (CMS data updated October 2, 2026).

• X-Ray Medical Group Radiation Oncology Inc8 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.

• Donald B. Fuller, MD
• Sunanda M. Pejavar, MD
• Shane M. Mesko, MD
• Philame S. Oronan, MD
• Dominique L. Rash, MD
• Andrew L. Chang, MD
• Iain Macewan, MD
• Siavosh Vakilian, MD

All radiation oncologists in San Diego →

Other clinicians in X-Ray Medical Group Radiation Oncology Inc

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

• Sunanda M. Pejavar, MD
• Lori A. Coleman, MD
• Kelly D. Dewitt, MD
• Andrew Bruggeman, MD
• Ruben Carmona, MD
• Barry M. Uhl, 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