Mahmoud Fathi Mahmoud Abd Nassar, MD
Endocrinology, Diabetes & Metabolism Physician · Burlington, VT
Mahmoud Fathi Mahmoud Abd Nassar, MD is an endocrinology, diabetes & metabolism physician with a practice address in Burlington, Vermont, and NPI 1548882137, issued on May 18, 2020. Check the license (Vermont 042.0018335, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Mahmoud Fathi Mahmoud Abd Nassar
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 042.0018335 VT
334582 NY
334582-01 NY
Self-reported in NPPES; status is on the state search - Practice location
- 111 Colchester Ave, Burlington, VT 05401
- Phone
- (802) 847-0000
- Enumerated
- May 18, 2020
- Record last updated
- Aug 8, 2025
- Medicare enrollment
- Enrolled (PECOS I20250624001973); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 19 in Vermont → Look up another NPI →
Also registered at 111 Colchester Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mahmoud Fathi Mahmoud Abd Nassar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 042.0018335Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
431 Medicare Part D claims for 115 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Levothyroxine Sodium50 claims
- Atorvastatin Calcium33 claims
- Ozempic32 claims
- Trulicity31 claims
- Humalog Kwikpen U-10026 claims
- Lantus Solostar24 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.
Bills Medicare through one group practice
- University OF Vermont Medical Center IncBurlington, VT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mahmoud Fathi Mahmoud Abd Nassar among 19 endocrinology, diabetes & metabolism physician records in Vermont
Mahmoud Fathi Mahmoud Abd Nassar, MD is one of 19 endocrinology, diabetes & metabolism physician records with a practice address in Vermont. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 0% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2007 · median 1991 among the 14 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Vermont practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Vermont
There are 19 endocrinology, diabetes & metabolism physician records in Vermont.
All 19 in Vermont → Every provider in Burlington → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Christina Bordeau, D.O.Burlington, VT 054011750605259
- Rose Christian, MDBurlington, VT 054011891773073
- Tina Kader, MDCMBurlington, VT 054011184179103
- John Leahy, M.D.Burlington, VT 054011598859480
- Muriel Nathan, M.D., PH.D.Burlington, VT 054011619989746
- Joel Schnure, MDBurlington, VT 054011154334142
- Samantha Steinmetz-WoodBurlington, VT 054011700380961
- Matthew Gilbert, DO, MPHSouth Burlington, VT 054031073634531
Common questions
What is Mahmoud Fathi Mahmoud Abd Nassar, MD's NPI number?
Mahmoud Fathi Mahmoud Abd Nassar, MD's National Provider Identifier (NPI) is 1548882137, issued on May 18, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mahmoud Fathi Mahmoud Abd Nassar, MD located?
The NPPES record lists a practice address at 111 Colchester Ave, Burlington, VT, 05401. Phone: (802) 847-0000. Providers update this record themselves, so call before visiting.
How can I verify Mahmoud Fathi Mahmoud Abd Nassar, MD's license?
NPPES lists Vermont license number 042.0018335, as entered by the provider. Search the Vermont Board of Medical Practice at https://www.healthvermont.gov/systems/board-medical-practice. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mahmoud Fathi Mahmoud Abd Nassar, MD prescribe under Medicare Part D?
In 2024, Mahmoud Fathi Mahmoud Abd Nassar, MD had 431 Medicare Part D claims for 115 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.