Bassel H. Mahmoud, M.D., PH.D.
Dermatology Physician · Worcester, MA
Bassel H. Mahmoud, M.D., PH.D. is a dermatology physician with a practice address in Worcester, Massachusetts, and NPI 1801023841, issued on Jun 17, 2009. Check the license (Massachusetts 257776, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Bassel H. Mahmoud
- Credential
- M.D., PH.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 257776 MA
Self-reported in NPPES; status is on the state search - Practice location
- 281 Lincoln St, Worcester, MA 01605
- Phone
- (508) 334-5979
- Enumerated
- Jun 17, 2009
- Record last updated
- Nov 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (508) 334-8466
- Medicaid ID
- 110116426A MA
- Medicare enrollment
- Enrolled (PECOS I20160922000832); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 627 in Massachusetts → Look up another NPI →
Also registered at 281 Lincoln St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christina Alavian, M.D.Dermatology Physician1356376461
- Rasha Amiri, M.D.Internal Medicine Physician1750589669
- Shideh Amirifeli, M.D.Internal Medicine Physician1083763890
Verify Bassel H. Mahmoud in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 257776Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average dermatology physician in 2024
94 Medicare Part D claims for 67 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Mupirocin56 claims
- Doxycycline Hyclate18 claims
- Cephalexin14 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 MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bassel H. Mahmoud among 627 dermatology physician records in Massachusetts
Bassel H. Mahmoud, M.D., PH.D. is one of 627 dermatology physician records with a practice address in Massachusetts. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 52% of them.
- NPI issued2009 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1996 · median 2008 among the 445 with a school on file
- Record last updated2020 · 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 207N00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Massachusetts
There are 627 dermatology physician records in Massachusetts.
All 627 in Massachusetts → Every provider in Worcester → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Christina Alavian, M.D.Worcester, MA 016051356376461
- Amanda Auerbach, M.D.Worcester, MA 016051558592261
- Leah Belazarian, M.D.Worcester, MA 016051598814311
- Dori Goldberg, M.D.Worcester, MA 016051922159961
- John Harris, MDWorcester, MA 016051316007214
- Laura Houk, M.D.Worcester, MA 016051649307406
- Rita Khodosh, M.D./PH.D.Worcester, MA 016051184886202
- Nikki Levin, M.D.Worcester, MA 016051548243470
Common questions
What is Bassel H. Mahmoud, M.D., PH.D.'s NPI number?
Bassel H. Mahmoud, M.D., PH.D.'s National Provider Identifier (NPI) is 1801023841, issued on Jun 17, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Bassel H. Mahmoud, M.D., PH.D. located?
The NPPES record lists a practice address at 281 Lincoln St, Worcester, MA, 01605. Phone: (508) 334-5979. Providers update this record themselves, so call before visiting.
How can I verify Bassel H. Mahmoud, M.D., PH.D.'s license?
NPPES lists Massachusetts license number 257776, 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.
How much does Bassel H. Mahmoud, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Bassel H. Mahmoud, M.D., PH.D. had 94 Medicare Part D claims for 67 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Bassel H. Mahmoud, M.D., PH.D.'s MIPS final score?
The 2023 MIPS final score is 97 of 100. 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.