Mazen S. Duwaji, MD
Anatomic Pathology & Clinical Pathology Physician · Brighton, MA
Mazen S. Duwaji, MD is an anatomic pathology & clinical pathology physician with a practice address in Brighton, Massachusetts, and NPI 1629067152, issued on Oct 18, 2005. Check the license (Massachusetts 57809, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mazen S. Duwaji
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 57809 MA
Self-reported in NPPES; status is on the state search - Practice location
- 736 Cambridge St, Brighton, MA 02135
- Phone
- (617) 789-3000
- Enumerated
- Oct 18, 2005
- Record last updated
- Mar 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 3126421 MA
- Medicare enrollment
- Enrolled (PECOS I20050729000077); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 542 in Massachusetts → Look up another NPI →
Also registered at 736 Cambridge St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samah Abdallah, MDInternal Medicine Physician1730814971
- Mu'Taz Abualsha'r, MBBSInternal Medicine Physician1609500586
- Angela AchkarInternal Medicine Physician1740971308
Verify Mazen S. Duwaji in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 57809Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Lifespan Physician Group OF Massachusetts IncTaunton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mazen S. Duwaji among 542 anatomic pathology & clinical pathology physician records in Massachusetts
Mazen S. Duwaji, MD is one of 542 anatomic pathology & clinical pathology physician records with a practice address in Massachusetts. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1978 · median 2004 among the 305 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Massachusetts
There are 542 anatomic pathology & clinical pathology physician records in Massachusetts.
All 542 in Massachusetts → Every provider in Brighton → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Lori Adcock, M.D.Brighton, MA 021351013954023
- Leo Aish, M.D.Brighton, MA 021351194799122
- Aishatu Ladu, MD, MPHBrighton, MA 021351629424700
- Anita Malek, M.DBrighton, MA 021351851656276
- Thomas O'Keefe, M.D.Brighton, MA 021351124096714
- Aleksandr Perepletchikov, MD, PHDBrighton, MA 021351417077678
- Douglas SchneiderBrighton, MA 021351760564470
- Mazen Toushan, M.D.Brighton, MA 021351407262918
Common questions
What is Mazen S. Duwaji, MD's NPI number?
Mazen S. Duwaji, MD's National Provider Identifier (NPI) is 1629067152, issued on Oct 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mazen S. Duwaji, MD located?
The NPPES record lists a practice address at 736 Cambridge St, Brighton, MA, 02135. Phone: (617) 789-3000. Providers update this record themselves, so call before visiting.
How can I verify Mazen S. Duwaji, MD's license?
NPPES lists Massachusetts license number 57809, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.