Rishi Bommannan, MD
Emergency Medicine Physician · Riverside, CA
Rishi Bommannan, MD is an emergency medicine physician with a practice address in Riverside, California, and NPI 1851040323, issued on Mar 22, 2022. Check the license (California A189650, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rishi Bommannan
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A189650 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4510 Brockton Ave Ste 223, Riverside, CA 92501
- Phone
- (951) 788-3536
- Enumerated
- Mar 22, 2022
- Record last updated
- Jul 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20250617000943); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 4510 Brockton Ave Ste 223
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David DonehueStudent in an Organized Health Care Education/Training Program1780532929
- Rheem Fawaz, MDStudent in an Organized Health Care Education/Training Program1427906668
- Sana Hadyah, MDEmergency Medicine Physician1295484434
- Alexa Johnson, MDStudent in an Organized Health Care Education/Training Program1811835994
- Sarra Larif, MDStudent in an Organized Health Care Education/Training Program1740138080
- Alex NelsonStudent in an Organized Health Care Education/Training Program1730973777
Verify Rishi Bommannan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A189650Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average emergency medicine physician in 2024
95 Medicare Part D claims for 75 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of 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.
Bills Medicare through one group practice
- Emergency Physicians Associates San Jose PCSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rishi Bommannan among 7,751 emergency medicine physician records in California
Rishi Bommannan, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2025 · median 2011 among the 4,560 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Riverside → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jason An, M.D.Riverside, CA 925011851533905
- Ryan Brenchley, M.D.Riverside, CA 925011154437390
- Eugene Chan, M.D.Riverside, CA 925011952414674
- Kenneth Dale, D.ORiverside, CA 925011932158771
- Roberta Dunn-Dixon, M.D.Riverside, CA 925011548448970
- Richard Guth, M.DRiverside, CA 925011154437325
- Michael Kang, M.D.Riverside, CA 925011124294517
- James Kim, M.DRiverside, CA 925011861508038
Common questions
What is Rishi Bommannan, MD's NPI number?
Rishi Bommannan, MD's National Provider Identifier (NPI) is 1851040323, issued on Mar 22, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Rishi Bommannan, MD located?
The NPPES record lists a practice address at 4510 Brockton Ave Ste 223, Riverside, CA, 92501. Phone: (951) 788-3536. Providers update this record themselves, so call before visiting.
How can I verify Rishi Bommannan, MD's license?
NPPES lists California license number A189650, 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 Rishi Bommannan, MD prescribe under Medicare Part D?
In 2024, Rishi Bommannan, MD had 95 Medicare Part D claims for 75 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.