Margarita Mendoza, MD
Emergency Medicine Physician · Riverside, CA
Margarita Mendoza, MD is an emergency medicine physician with a practice address in Riverside, California, and NPI 1073872131, issued on May 10, 2012. Check the license (California A133001, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Margarita Mendoza
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A133001 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave, Riverside, CA 92505
- Phone
- (951) 353-2000
- Enumerated
- May 10, 2012
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150903002245); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2012
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 10800 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margarita Mendoza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A133001Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average emergency medicine physician in 2024
180 Medicare Part D claims for 144 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Cephalexin29 claims
- Ciprofloxacin Hcl19 claims
- Prednisone16 claims
- Hydrocodone-Acetaminophen15 claims
- Tramadol Hcl13 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: $88.10
3 payments; by number, the most common kind was food and beverage; the largest payer was Biogen, Inc. The 12,335 providers of this specialty with any payment received $953.79 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
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margarita Mendoza among 7,751 emergency medicine physician records in California
Margarita Mendoza, 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 2012, is newer than 63% of them.
- NPI issued2012 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2012 · median 2011 among the 4,560 with a school on file
- Record last updated2021 · 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
- Oscar Benitez, MDRiverside, CA 925051710035696
- Barbara Blasko, MDRiverside, CA 925051689741597
- Richard Clinton, M.D.Riverside, CA 925051912117813
- Michael Cordeiro, M.D.Riverside, CA 925051902048473
- Stephen Ferrall, MDRiverside, CA 925051487721296
- Franklin Gbenedio, DORiverside, CA 925051285793943
- Bret Kilker, M.D.Riverside, CA 925051447494497
- Bruce Kim, MDRiverside, CA 925051699834259
Common questions
What is Margarita Mendoza, MD's NPI number?
Margarita Mendoza, MD's National Provider Identifier (NPI) is 1073872131, issued on May 10, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Margarita Mendoza, MD located?
The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (951) 353-2000. Providers update this record themselves, so call before visiting.
How can I verify Margarita Mendoza, MD's license?
NPPES lists California license number A133001, 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 Margarita Mendoza, MD prescribe under Medicare Part D?
In 2024, Margarita Mendoza, MD had 180 Medicare Part D claims for 144 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.