Kathleen Michelle Leahy, M.D., MPH
Medical Oncology Physician · Weymouth, MA
Kathleen Michelle Leahy, M.D., MPH is a medical oncology physician with a practice address in Weymouth, Massachusetts, and NPI 1275913014, issued on Jun 7, 2015. Check the license (Massachusetts 288208, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Kathleen Michelle Leahy
- Credential
- M.D., MPH
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 288208 MA
Self-reported in NPPES; status is on the state search - Practice location
- 101 Columbian St, Weymouth, MA 02190
- Phone
- (781) 624-5000
- Enumerated
- Jun 7, 2015
- Record last updated
- May 20, 2026
- Fax
- (781) 624-4840
- Medicare enrollment
- Enrolled (PECOS I20210724000044); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 421 in Massachusetts → Look up another NPI →
Also registered at 101 Columbian St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily BoudreauPhysician Assistant1487213021
- Jennifer Byer, MDMedical Oncology Physician1336438522
- Randi Carhart, MDMedical Oncology Physician1306370168
- Lynda Clancy, RNPObstetrics & Gynecology Nurse Practitioner1245261759
- Jad El Masri, MDMedical Oncology Physician1306251178
- Jennifer Faig, M.D.Medical Oncology Physician1194163469
Verify Kathleen Michelle Leahy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 288208Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average medical oncology physician in 2024
438 Medicare Part D claims for 126 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole129 claims
- Eliquis60 claims
- Exemestane25 claims
- Tamoxifen Citrate19 claims
- Dexamethasone18 claims
- Prochlorperazine Maleate17 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: $115.57
1 payment: food and beverage; the largest payer was Genzyme Corporation. The 3,343 providers of this specialty with any payment received $11,773.47 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 2 group practices
- Dana-Farber Cancer Institute, Inc.South Weymouth, MA
- 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 Michelle Leahy among 421 medical oncology physician records in Massachusetts
Kathleen Michelle Leahy, M.D., MPH is one of 421 medical oncology physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 20% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2015 · median 2007 among the 291 with a school on file
- Record last updated2026 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Massachusetts
There are 421 medical oncology physician records in Massachusetts.
All 421 in Massachusetts → Every provider in Weymouth → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Jennifer Byer, MDWeymouth, MA 021901336438522
- Stephanie Cardarella, M.D.Weymouth, MA 021901295834406
- Randi Carhart, MDWeymouth, MA 021901306370168
- Jad El Masri, MDWeymouth, MA 021901306251178
- Jennifer Faig, M.D.Weymouth, MA 021901194163469
- Medhavi Gupta, M.D.Weymouth, MA 021901124402961
- Temilola Onabanjo, MD, MPHWeymouth, MA 021901073955662
- James Stoeckle, M.D.Weymouth, MA 021901578912721
Common questions
What is Kathleen Michelle Leahy, M.D., MPH's NPI number?
Kathleen Michelle Leahy, M.D., MPH's National Provider Identifier (NPI) is 1275913014, issued on Jun 7, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Michelle Leahy, M.D., MPH located?
The NPPES record lists a practice address at 101 Columbian St, Weymouth, MA, 02190. Phone: (781) 624-5000. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Michelle Leahy, M.D., MPH's license?
NPPES lists Massachusetts license number 288208, 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 Michelle Leahy, M.D., MPH prescribe under Medicare Part D?
In 2024, Kathleen Michelle Leahy, M.D., MPH had 438 Medicare Part D claims for 126 beneficiaries; the average among medical oncology physician prescribers was 703. 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.