NPPES file of Aug 9, 2026

Mostafa Hammoudi, M.D.

Neurology Physician · Oxnard, CA

Mostafa Hammoudi, M.D. is a neurology physician with a practice address in Oxnard, California, and NPI 1912027426, issued on Mar 29, 2007. Check the license (California C149844, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912027426
Name
Mostafa Hammoudi
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
C149844 CA
Self-reported in NPPES; status is on the state search
Practice location
3641 W 5TH St, Oxnard, CA 93030
Phone
(805) 985-5505
Enumerated
Mar 29, 2007
Record last updated
Jul 25, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170712003831); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest neurology physician records → All 2,339 in California → Look up another NPI →

Also registered at 3641 W 5TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Scott Changchien, M.D.Obstetrics & Gynecology Physician1902850555
  2. Dorothea Clayton, M.D.Internal Medicine Physician1053596395
  3. Suseela Dasari, M.D.Pediatrics Physician1982658548
  4. Denia Garfias, M.D.Pediatrics Physician1992905871
  5. Jonathan Shirman, DOAddiction Medicine (Family Medicine) Physician1326606898
  6. Joel Siegel, M.D.Dermatology Physician1528056868

Verify Mostafa Hammoudi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C149844    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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45% more Medicare Part D claims than the average neurology physician in 2024

1,989 Medicare Part D claims for 301 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Mostafa Hammoudi1,989
  2. Specialty average1,370

Most prescribed

  1. Donepezil Hcl287 claims
  2. Levetiracetam258 claims
  3. Memantine Hcl225 claims
  4. Lacosamide112 claims
  5. Gabapentin110 claims
  6. Lamotrigine97 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: $13.11

1 payment: education; the largest payer was Amgen Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mostafa Hammoudi$13.11
  2. Specialty average$8,318.07

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

  1. Community Memorial Health SystemOxnard, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mostafa Hammoudi among 2,339 neurology physician records in California

Mostafa Hammoudi, M.D. is one of 2,339 neurology 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 2007, is newer than 41% of them.

  • NPI issued2007 · 41% of these records are older, 48% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1997 · median 2006 among the 1,628 with a school on file
  • Record last updated2019 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

All 2,339 in California → Every provider in Oxnard → Neurology Physician nationwide →

The 8 neurology physician records with the nearest ZIP codes

  1. Bradley Hiner, MDOxnard, CA 930301326099151
  2. Patrick Kong, MDOxnard, CA 930301447308002
  3. Yucheng Liao, MD PHDOxnard, CA 930301922102029
  4. Brian MiremadiOxnard, CA 930301376078931
  5. Mani Nezhad, M.D.Oxnard, CA 930301669716387
  6. Omair Sheikh, M.DOxnard, CA 930301780830711
  7. Diana Yang, DOOxnard, CA 930301700405800
  8. Daniel Rafie, M.D.Oxnard, CA 930351487131884

Common questions

What is Mostafa Hammoudi, M.D.'s NPI number?

Mostafa Hammoudi, M.D.'s National Provider Identifier (NPI) is 1912027426, issued on Mar 29, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mostafa Hammoudi, M.D. located?

The NPPES record lists a practice address at 3641 W 5TH St, Oxnard, CA, 93030. Phone: (805) 985-5505. Providers update this record themselves, so call before visiting.

How can I verify Mostafa Hammoudi, M.D.'s license?

NPPES lists California license number C149844, 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 Mostafa Hammoudi, M.D. prescribe under Medicare Part D?

In 2024, Mostafa Hammoudi, M.D. had 1,989 Medicare Part D claims for 301 beneficiaries; the average among neurology physician prescribers was 1,370. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.