Siavash Jabbari, MD
Radiation Oncology Physician · San Diego, CA
Siavash Jabbari, MD is a radiation oncology physician with a practice address in San Diego, California, and NPI 1720314107, issued on Oct 20, 2009. Check the license (California A99269, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Siavash Jabbari
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A99269 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7901 Frost St, San Diego, CA 92123
- Phone
- (858) 939-5010
- Enumerated
- Oct 20, 2009
- Record last updated
- Feb 18, 2026
- Fax
- (858) 939-5021
- Medicare enrollment
- Enrolled (PECOS I20121219000417); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2005
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 7901 Frost St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aileen Afshar, MDInternal Medicine Physician1134689946
- Saad Alkhider, MDInternal Medicine Physician1447712062
- Mustafa Alwash, M.DHospitalist Physician1679936439
- Alexandra Anjier, MDEmergency Medicine Physician1467087510
- Anna Astashchanka, MDPulmonary Disease Physician1821594359
- Amir Bahreman, M.D.Internal Medicine Physician1124249388
Verify Siavash Jabbari in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99269Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average radiation oncology physician in 2024
98 Medicare Part D claims for 33 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl19 claims
- Dexamethasone16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $138.76
2 payments; by number, the most common kind was food and beverage; the largest payer was icotec Medical Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- X-Ray Medical Group Radiation Oncology IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Siavash Jabbari among 735 radiation oncology physician records in California
Siavash Jabbari, MD is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2005 · median 2005 among the 545 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in San Diego → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Lori Coleman, MDSan Diego, CA 921231053348920
- Croix Fossum, M.D.San Diego, CA 921231104351006
- Geoffrey Weinstein, MDSan Diego, CA 921231841233947
- Andrew Chang, M.D.San Diego, CA 921211255513859
- Jehee Choi, MDSan Diego, CA 921211619260056
- Brian Chou, MDSan Diego, CA 921211770070609
- Iain Macewan, M.D.San Diego, CA 921211326300401
- Atmaram Pai Panandiker, MDSan Diego, CA 921211871552950
Common questions
What is Siavash Jabbari, MD's NPI number?
Siavash Jabbari, MD's National Provider Identifier (NPI) is 1720314107, issued on Oct 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Siavash Jabbari, MD located?
The NPPES record lists a practice address at 7901 Frost St, San Diego, CA, 92123. Phone: (858) 939-5010. Providers update this record themselves, so call before visiting.
How can I verify Siavash Jabbari, MD's license?
NPPES lists California license number A99269, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Siavash Jabbari, MD prescribe under Medicare Part D?
In 2024, Siavash Jabbari, MD had 98 Medicare Part D claims for 33 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.