Robert James Cannon, M.D.
Emergency Medicine Physician · Riverside, CA
Robert James Cannon, M.D. is an emergency medicine physician with a practice address in Riverside, California, and NPI 1528097045, issued on Jun 30, 2006. Check the license (California A39500, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert James Cannon
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A39500 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3865 Jackson St, Riverside, CA 92503
- Phone
- (951) 352-5666
- Enumerated
- Jun 30, 2006
- Record last updated
- Mar 29, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (951) 352-5445
- Medicaid ID
- 00A395000 CA
- Medicare enrollment
- Enrolled (PECOS I20060317000368); 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 3865 Jackson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John AbedEmergency Medicine Physician1891724316
- Betsy Albrecht, R.N. CNOR RNFARegistered Nurse First Assistant1043643208
- Alyssa Armstrong, CNMAdvanced Practice Midwife1770359754
- Marium AwadPharmacist1215641709
- Christine Ayad, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1316458896
- Bassam BaderHospitalist Physician1487072559
Verify Robert James Cannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A39500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average emergency medicine physician in 2024
64 Medicare Part D claims for 43 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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
- Seven Star Hospital Associates IncOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert James Cannon among 7,751 emergency medicine physician records in California
Robert James Cannon, M.D. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1981 · median 2011 among the 4,560 with a school on file
- Record last updated2010 · 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
- John AbedRiverside, CA 925031891724316
- Chad Clark, M.D.Riverside, CA 925031023052545
- Julius Ibanez, M.D.Riverside, CA 925031831125376
- Michael Lowe, M.D.Riverside, CA 925031710916234
- Ronald Moy, M.D.Riverside, CA 925031831313337
- Gerald Ngo, MDRiverside, CA 925031134821838
- Elvia Orrillo, M.D.Riverside, CA 925031639114259
- Michael Ratter, M.D.Riverside, CA 925031457380784
Common questions
What is Robert James Cannon, M.D.'s NPI number?
Robert James Cannon, M.D.'s National Provider Identifier (NPI) is 1528097045, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert James Cannon, M.D. located?
The NPPES record lists a practice address at 3865 Jackson St, Riverside, CA, 92503. Phone: (951) 352-5666. Providers update this record themselves, so call before visiting.
How can I verify Robert James Cannon, M.D.'s license?
NPPES lists California license number A39500, 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 Robert James Cannon, M.D. prescribe under Medicare Part D?
In 2024, Robert James Cannon, M.D. had 64 Medicare Part D claims for 43 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.