John Thomas O'Malley, M.D., PH.D.
Dermatology Physician · Boston, MA
John Thomas O'Malley, M.D., PH.D. is a dermatology physician with a practice address in Boston, Massachusetts, and NPI 1790002855, issued on Apr 29, 2010. Check the license (Massachusetts 259346, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Thomas O'Malley
- Credential
- M.D., PH.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- 259346 MA
11015381A IN
243178 NY
Self-reported in NPPES; status is on the state search - Practice location
- 221 Longwood Ave, Boston, MA 02115
- Phone
- (617) 732-4918
- Enumerated
- Apr 29, 2010
- Record last updated
- Aug 13, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (617) 582-6060
- 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 John Thomas O'Malley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 259346Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average dermatology physician in 2024
16 Medicare Part D claims, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
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.
John Thomas O'Malley among 627 dermatology physician records in Massachusetts
John Thomas O'Malley, 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 2010, is newer than 56% of them.
- NPI issued2010 · 56% of these records are older, 41% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2014 · 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 John Thomas O'Malley, M.D., PH.D.'s NPI number?
John Thomas O'Malley, M.D., PH.D.'s National Provider Identifier (NPI) is 1790002855, issued on Apr 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is John Thomas O'Malley, M.D., PH.D. 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 John Thomas O'Malley, M.D., PH.D.'s license?
NPPES lists Massachusetts license number 259346, 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 John Thomas O'Malley, M.D., PH.D. prescribe under Medicare Part D?
In 2024, John Thomas O'Malley, M.D., PH.D. had 16 Medicare Part D claims; 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.