Holly Mason, M.D.,PH.D.
Dermatology Physician · Salem, MA
Holly Mason, M.D.,PH.D. is a dermatology physician with a practice address in Salem, Massachusetts, and NPI 1497950182, issued on Jun 20, 2007. Check the license (Massachusetts 238774, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Holly Mason
- Credential
- M.D.,PH.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- 238774 MA
MT189227 PA
Self-reported in NPPES; status is on the state search - Practice location
- 5 Paradise RD, Salem, MA 01970
- Phone
- (978) 691-5690
- Enumerated
- Jun 20, 2007
- Record last updated
- Dec 6, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (978) 691-5693
- Medicare enrollment
- Enrolled (PECOS I20090701000380); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 627 in Massachusetts → Look up another NPI →
Also registered at 5 Paradise RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Haley Snadecki, MDDermatology Physician1508276023
- Kristin Todd, PAPhysician Assistant1417909581
Verify Holly Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 238774Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average dermatology physician in 2024
803 Medicare Part D claims for 335 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Clobetasol Propionate98 claims
- Fluorouracil89 claims
- Triamcinolone Acetonide85 claims
- Ketoconazole75 claims
- Metronidazole42 claims
- Betamethasone Diprop Augmented34 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,828.90
100 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Northeast Dermatology Associates PCMarblehead, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Holly Mason among 627 dermatology physician records in Massachusetts
Holly Mason, 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 2007, is newer than 39% of them.
- NPI issued2007 · 39% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2005 · median 2008 among the 445 with a school on file
- Record last updated2017 · 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 Salem → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Haley Snadecki, MDSalem, MA 019701508276023
- Arthur Dimattia, MDPeabody, MA 019601598887044
- Caitlin Carney, MDNewburyport, MA 019501821251836
- Mark Lewis, MDDanvers, MA 019231538262670
- Susan Sweeney, M.D.Canton, MA 020211033192976
- Jessica Awerman, MDBeverly, MA 019151114455102
- Sabina Bis, MDBeverly, MA 019151437476975
- Margaret Bruns, MDBeverly, MA 019151356830731
Common questions
What is Holly Mason, M.D.,PH.D.'s NPI number?
Holly Mason, M.D.,PH.D.'s National Provider Identifier (NPI) is 1497950182, issued on Jun 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Holly Mason, M.D.,PH.D. located?
The NPPES record lists a practice address at 5 Paradise RD, Salem, MA, 01970. Phone: (978) 691-5690. Providers update this record themselves, so call before visiting.
How can I verify Holly Mason, M.D.,PH.D.'s license?
NPPES lists Massachusetts license number 238774, 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 Holly Mason, M.D.,PH.D. prescribe under Medicare Part D?
In 2024, Holly Mason, M.D.,PH.D. had 803 Medicare Part D claims for 335 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Holly Mason, M.D.,PH.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.