Kathleen Mahoney, M.D.
Hematology & Oncology Physician · Boston, MA
Kathleen Mahoney, M.D. is a hematology & oncology physician with a practice address in Boston, Massachusetts, and NPI 1568621167, issued on Jun 9, 2008. Check the license (Massachusetts 248973, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Kathleen Mahoney
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 248973 MA
Self-reported in NPPES; status is on the state search - Practice location
- 330 Brookline Ave, Boston, MA 02215
- Phone
- (617) 735-2063
- Enumerated
- Jun 9, 2008
- Record last updated
- Mar 25, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (617) 735-2060
- Medicare enrollment
- Enrolled (PECOS I20141013001338); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 461 in Massachusetts → Look up another NPI →
Also registered at 330 Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amtul Aala, MDNephrology Physician1174946347
- Elijah AbassStudent in an Organized Health Care Education/Training Program1306784947
- Omar Abdel-Razek, MDInterventional Cardiology Physician1912780008
- Youssef Abdullah, MD, MBAStudent in an Organized Health Care Education/Training Program1346983442
- Najma Abdullahi, MD, MPHStudent in an Organized Health Care Education/Training Program1669213054
- Elisabeth AbelesStudent in an Organized Health Care Education/Training Program1528659760
Verify Kathleen Mahoney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 248973Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
378 Medicare Part D claims for 55 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 51% of claims.
Most prescribed
- Orgovyx65 claims
- Prednisone60 claims
- Abiraterone Acetate54 claims
- Nubeqa48 claims
- Xtandi44 claims
- Eliquis17 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.
Industry payments in 2024: $36.18
2 payments; by number, the most common kind was education; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Mahoney among 461 hematology & oncology physician records in Massachusetts
Kathleen Mahoney, M.D. is one of 461 hematology & oncology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 61% of them.
- NPI issued2008 · 61% of these records are older, 34% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2004 among the 303 with a school on file
- Record last updated2015 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Massachusetts
There are 461 hematology & oncology physician records in Massachusetts.
All 461 in Massachusetts → Every provider in Boston → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Gregory Abel, MDBoston, MA 022151285611954
- Nancy Andrea, M.D.Boston, MA 022151033193719
- David Avigan, M.D.Boston, MA 022151952349243
- David Barbie, MDBoston, MA 022151164401626
- Christopher Lee Carpenter, M.D.Boston, MA 022151083651798
- Bimalangshu Dey, MDBoston, MA 022151679563845
- Robb Friedman, M.D.Boston, MA 022151669451514
- Leena Gandhi, MD PHDBoston, MA 022151841275906
Common questions
What is Kathleen Mahoney, M.D.'s NPI number?
Kathleen Mahoney, M.D.'s National Provider Identifier (NPI) is 1568621167, issued on Jun 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Mahoney, M.D. located?
The NPPES record lists a practice address at 330 Brookline Ave, Boston, MA, 02215. Phone: (617) 735-2063. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Mahoney, M.D.'s license?
NPPES lists Massachusetts license number 248973, 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 Kathleen Mahoney, M.D. prescribe under Medicare Part D?
In 2024, Kathleen Mahoney, M.D. had 378 Medicare Part D claims for 55 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.