Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H.
Dermatology Physician · Boston, MA
Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H. is a dermatology physician with a practice address in Boston, Massachusetts, and NPI 1558597039, issued on Jun 10, 2009. Check the license (Massachusetts 255852, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Margaret Welsh Cavanaugh-Hussey
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- 255852 MA
2552852 MA
Self-reported in NPPES; status is on the state search - Practice location
- 221 Longwood Ave, Boston, MA 02115
- Phone
- (617) 732-4918
- Enumerated
- Jun 10, 2009
- Record last updated
- Sep 19, 2025
- Medicare enrollment
- Enrolled (PECOS I20130918000196); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 627 in Massachusetts → Look up another NPI →
Also registered at 221 Longwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margaret Welsh Cavanaugh-Hussey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 255852Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% more Medicare Part D claims than the average dermatology physician in 2024
912 Medicare Part D claims for 363 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Ketoconazole181 claims
- Triamcinolone Acetonide106 claims
- Clobetasol Propionate93 claims
- Fluorouracil65 claims
- Tretinoin43 claims
- Doxycycline Hyclate42 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 2 group practices
- Boston Health Care For The Homeless Program, Inc.Boston, MA
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Welsh Cavanaugh-Hussey among 627 dermatology physician records in Massachusetts
Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H. 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
- Graduated2009 · median 2008 among the 445 with a school on file
- Record last updated2025 · 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 Boston → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Niroshana Anandasabapathy, MD PHDBoston, MA 021151316145717
- Susan Burgin, M.D.Boston, MA 021151174580906
- Elizabeth Buzney, MDBoston, MA 021151881720621
- Lynda Chin, M.D.Boston, MA 021151437210143
- Caroline Kim, M.D.Boston, MA 021151386602753
- Kubinne Kim, MDBoston, MA 021151437341401
- Thomas Kupper, MDBoston, MA 021151548227945
- Vincent Li, MDBoston, MA 021151427093624
Common questions
What is Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H.'s NPI number?
Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H.'s National Provider Identifier (NPI) is 1558597039, issued on Jun 10, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H. located?
The NPPES record lists a practice address at 221 Longwood Ave, Boston, MA, 02115. Phone: (617) 732-4918. Providers update this record themselves, so call before visiting.
How can I verify Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H.'s license?
NPPES lists Massachusetts license number 255852, 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 Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H. prescribe under Medicare Part D?
In 2024, Margaret Welsh Cavanaugh-Hussey, M.D., M.P.H. had 912 Medicare Part D claims for 363 beneficiaries; the average among dermatology physician prescribers was 797. 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.