Irma Lopez, M.D.
General Practice Physician · Ontario, CA
Irma Lopez, M.D. is a general practice physician with a practice address in Ontario, California, and NPI 1538240908, issued on Oct 18, 2006. Check the license (California G57022, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Irma Lopez
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- G57022 CA
Self-reported in NPPES; status is on the state search - Practice location
- 602 N Euclid Ave, Ontario, CA 91762
- Phone
- (909) 391-3423
- Enumerated
- Oct 18, 2006
- Record last updated
- Jan 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (909) 391-3424
- Medicaid ID
- 00G57022 CA
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Verify Irma Lopez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G57022Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average general practice physician in 2024
1,049 Medicare Part D claims for 224 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium102 claims
- Metformin Hcl91 claims
- Levothyroxine Sodium47 claims
- Lisinopril46 claims
- Amlodipine Besylate45 claims
- Omeprazole29 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: $113.24
5 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 4,259 providers of this specialty with any payment received $1,273.40 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.
Irma Lopez among 1,956 general practice physician records in California
Irma Lopez, M.D. is one of 1,956 general practice physician records with a practice address in California. 48% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 66% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2008 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in Ontario → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Jose De La Llana, M.D.Ontario, CA 917621326244062
- Miguel Castuera, PA-CMontclair, CA 917631679769897
- David Lozano, M.D.Ontario, CA 917611104041995
- Jhujhar Singh, DOMontclair, CA 917631730361544
- Krupali Tejura, M.D.Ontario, CA 917611487848651
- Tsung Tsai, M.D.Ontario, CA 917611629250394
- Erik Wiele, DOMontclair, CA 917631619405875
- Brian Lee, M.D.Ontario, CA 917641932227626
Common questions
What is Irma Lopez, M.D.'s NPI number?
Irma Lopez, M.D.'s National Provider Identifier (NPI) is 1538240908, issued on Oct 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irma Lopez, M.D. located?
The NPPES record lists a practice address at 602 N Euclid Ave, Ontario, CA, 91762. Phone: (909) 391-3423. Providers update this record themselves, so call before visiting.
How can I verify Irma Lopez, M.D.'s license?
NPPES lists California license number G57022, 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 Irma Lopez, M.D. prescribe under Medicare Part D?
In 2024, Irma Lopez, M.D. had 1,049 Medicare Part D claims for 224 beneficiaries; the average among general practice physician prescribers was 3,030. 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.