Matthew Joseph Lopez, MED STUDENT
Emergency Medicine Physician · Sacramento, CA
Matthew Joseph Lopez, MED STUDENT is an emergency medicine physician with a practice address in Sacramento, California, and NPI 1033481593, issued on Jan 31, 2012. Check the license (California A148590, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Matthew Joseph Lopez
- Credential
- MED STUDENT
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A148590 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4610 X St, Sacramento, CA 95817
- Phone
- (916) 762-7911
- Enumerated
- Jan 31, 2012
- Record last updated
- Jun 19, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170621000542); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 4610 X St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ferheen AbbasiStudent in an Organized Health Care Education/Training Program1518745108
- Geraldine Abilo CardenasSpecialist1871481606
- James AboagyeStudent in an Organized Health Care Education/Training Program1235955998
- Christopher AdamsStudent in an Organized Health Care Education/Training Program1285223446
- Erika AdamsStudent in an Organized Health Care Education/Training Program1528769767
- Lindsay AdamsSpecialist1417831991
Verify Matthew Joseph Lopez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A148590Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% more Medicare Part D claims than the average emergency medicine physician in 2024
305 Medicare Part D claims for 200 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 40 claims were for opioids.
Most prescribed
- Ibuprofen29 claims
- Hydrocodone-Acetaminophen26 claims
- Prednisone19 claims
- Cefdinir17 claims
- Azithromycin13 claims
- Ondansetron Odt13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $175.30
1 payment: food and beverage; the largest payer was Abbott Laboratories. 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
- Cep America - CaliforniaFolsom, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Joseph Lopez among 7,751 emergency medicine physician records in California
Matthew Joseph Lopez, MED STUDENT 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
- Graduated2013 · median 2011 among the 4,560 with a school on file
- Record last updated2017 · 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).
369 emergency medicine physician records list a practice address in Sacramento
They are 369 of the 33,083 NPPES records with a practice address in Sacramento, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Sacramento → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jodie Craig, M.D.Sacramento, CA 958171659354124
- Greg Hachigian, M.D.Sacramento, CA 958171558342022
- James Holmes, MD, MPHSacramento, CA 958171427033091
- James Kirk, MDSacramento, CA 958171598749848
- Nathan Kuppermann, M.D., M.P.H.Sacramento, CA 958171356322150
- James Lee, M.D.Sacramento, CA 958171730163510
- Kerry McMahon, MDSacramento, CA 958171235113549
- Robert Narverud, M.D.Sacramento, CA 958171457335754
Common questions
What is Matthew Joseph Lopez, MED STUDENT's NPI number?
Matthew Joseph Lopez, MED STUDENT's National Provider Identifier (NPI) is 1033481593, issued on Jan 31, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Joseph Lopez, MED STUDENT located?
The NPPES record lists a practice address at 4610 X St, Sacramento, CA, 95817. Phone: (916) 762-7911. Providers update this record themselves, so call before visiting.
How can I verify Matthew Joseph Lopez, MED STUDENT's license?
NPPES lists California license number A148590, 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 Matthew Joseph Lopez, MED STUDENT prescribe under Medicare Part D?
In 2024, Matthew Joseph Lopez, MED STUDENT had 305 Medicare Part D claims for 200 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Matthew Joseph Lopez, MED STUDENT's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.