Mahmoud Nemazee, M.D.
Emergency Medicine Physician · Norwalk, CA
Mahmoud Nemazee, M.D. is an emergency medicine physician with a practice address in Norwalk, California, and NPI 1801849450, issued on May 17, 2006. Check the license (California C50799, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mahmoud Nemazee
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- C50799 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13100 Studebaker RD, Norwalk, CA 90650
- Phone
- (562) 864-6377
- Enumerated
- May 17, 2006
- Record last updated
- Nov 27, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040217000479); 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 13100 Studebaker RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Ann AmantePsychiatric/Mental Health Registered Nurse1275364333
- Vanessa Barnum, RNRegistered Nurse1053140970
- Norberto Bowen, REGISTERED NURSEAdult Psychiatric/Mental Health Registered Nurse1629827019
- Downapha Britton, PHDRegistered Nurse1689443897
- Timothy Carman, M.D.Emergency Medicine Physician1669426995
- Jack De LaraRegistered Nurse1972347334
Verify Mahmoud Nemazee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C50799Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average emergency medicine physician in 2024
478 Medicare Part D claims for 244 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 101 claims were for opioids.
Most prescribed
- Tramadol Hcl72 claims
- Levofloxacin64 claims
- Ciprofloxacin Hcl54 claims
- Cephalexin42 claims
- Ibuprofen36 claims
- Hydrocodone-Acetaminophen25 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): 100 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).
Bills Medicare through one group practice
- Coast Plaza Emergency Physicians Group IncNorwalk, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mahmoud Nemazee among 7,751 emergency medicine physician records in California
Mahmoud Nemazee, 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
- Graduated1984 · median 2011 among the 4,560 with a school on file
- Record last updated2007 · 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 Norwalk → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Timothy Carman, M.D.Norwalk, CA 906501669426995
- Thomas Gionis, M.D.Norwalk, CA 906501780638049
- Jung-Eun Lim, MDNorwalk, CA 906501689089195
- L. Nelson, MDNorwalk, CA 906501407972656
- Brian Payne, M.D.Norwalk, CA 906501013961648
- Varun ShahiNorwalk, CA 906501487017497
- Sergio Hernandez, MDMontebello, CA 906401346404456
- Dale Knox, M.D.Montebello, CA 906401215998919
Common questions
What is Mahmoud Nemazee, M.D.'s NPI number?
Mahmoud Nemazee, M.D.'s National Provider Identifier (NPI) is 1801849450, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mahmoud Nemazee, M.D. located?
The NPPES record lists a practice address at 13100 Studebaker RD, Norwalk, CA, 90650. Phone: (562) 864-6377. Providers update this record themselves, so call before visiting.
How can I verify Mahmoud Nemazee, M.D.'s license?
NPPES lists California license number C50799, 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 Mahmoud Nemazee, M.D. prescribe under Medicare Part D?
In 2024, Mahmoud Nemazee, M.D. had 478 Medicare Part D claims for 244 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Mahmoud Nemazee, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.