NPPES file of Aug 9, 2026

Mostafa Mohamed Ezzat Hamza A Mazen, MD

Ophthalmology Physician · Duluth, MN

Mostafa Mohamed Ezzat Hamza A Mazen, MD is an ophthalmology physician with a practice address in Duluth, Minnesota, and NPI 1497284731, issued on Jun 9, 2017. Check the license on the Minnesota Board of Medical Practice; 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
1497284731
Name
Mostafa Mohamed Ezzat Hamza A Mazen
Credential
MD
Primary taxonomy
Ophthalmology Physician 207W00000X
License numbers
296424 NY
MD22505 ME
2023011649 MO
Self-reported in NPPES; status is on the state search
Practice location
400 E 3RD St, Duluth, MN 55805
Phone
(218) 786-8364
Enumerated
Jun 9, 2017
Record last updated
Apr 20, 2023
Medicare enrollment
Enrolled (PECOS I20231109002219); accepts Medicare assignment
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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Also registered at 400 E 3RD St

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

  1. Peter Aas, MDHospitalist Physician1063455848
  2. Amina Adil, MDCardiovascular Disease Physician1336482314
  3. Rahul Aggarwal, M.D.Pediatric Critical Care Medicine Physician1336198332
  4. Olubisi Akinseloyin, MDHospitalist Physician1619309010
  5. Glenn Albin, M.DCardiovascular Disease Physician1902851116
  6. David AlexanderDiagnostic Radiology Physician1932135936

Verify Mostafa Mohamed Ezzat Hamza A Mazen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical PracticeCheck 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 Minnesota license search

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7% fewer Medicare Part D claims than the average ophthalmology physician in 2024

1,413 Medicare Part D claims for 376 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.

  1. Mostafa Mohamed Mazen1,413
  2. Specialty average1,518

Most prescribed

  1. Latanoprost247 claims
  2. Prednisolone Acetate202 claims
  3. Ketorolac Tromethamine165 claims
  4. Timolol Maleate97 claims
  5. Brimonidine Tartrate91 claims
  6. Ofloxacin76 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: $1,371.96

16 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mostafa Mohamed Mazen$1,371.96
  2. Specialty average$4,535.02

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
  2. Ophthalmology Consultants LLCSaint Louis, MO

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

Mostafa Mohamed Ezzat Hamza A Mazen among 434 ophthalmology physician records in Minnesota

Mostafa Mohamed Ezzat Hamza A Mazen, MD is one of 434 ophthalmology physician records with a practice address in Minnesota. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 80% of them.

  • NPI issued2017 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2007 · median 2006 among the 282 with a school on file
  • Record last updated2023 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Ophthalmology Physician providers in Minnesota

There are 434 ophthalmology physician records in Minnesota.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Grishma Bharucha, M.D.Duluth, MN 558051609137363
  2. Sarah GalchusDuluth, MN 558051720193089
  3. David Herman, M.D.Duluth, MN 558051790763977
  4. Angela McAllister, M.D.Duluth, MN 558051891006037
  5. Luke Moore, M.D.Duluth, MN 558051023452182
  6. Joseph MorehouseDuluth, MN 558051447294459
  7. Thomas ShueyDuluth, MN 558051508808247
  8. Daniel SkorichDuluth, MN 558051659315968

Common questions

What is Mostafa Mohamed Ezzat Hamza A Mazen, MD's NPI number?

Mostafa Mohamed Ezzat Hamza A Mazen, MD's National Provider Identifier (NPI) is 1497284731, issued on Jun 9, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Mostafa Mohamed Ezzat Hamza A Mazen, MD located?

The NPPES record lists a practice address at 400 E 3RD St, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.

How can I verify Mostafa Mohamed Ezzat Hamza A Mazen, MD's license?

Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mostafa Mohamed Ezzat Hamza A Mazen, MD prescribe under Medicare Part D?

In 2024, Mostafa Mohamed Ezzat Hamza A Mazen, MD had 1,413 Medicare Part D claims for 376 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.