Kathleen Michelle Leahy, M.D., MPH
NPI 1275913014ActiveIndividual· Internal Medicine, Medical Oncology· Weymouth, MA
Internal Medicine, Medical Oncology (M.D., MPH) in Weymouth, Massachusetts, trained at Boston University School of Medicine (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $577,855 for 438 claims, against $17,525 paid for services in 2024. Genzyme Corporation reported $83.46 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1275913014 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., MPH |
| Sole proprietor | Yes |
| NPI issued | Jun 7, 2015 |
| Last updated in NPPES | May 20, 2026 |
| Certified by provider | May 20, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 288208 | MA |
| Internal Medicine, Hematology | 207RH0000X | 288208 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 167 |
|---|---|
| Services billed | 249 across 11 procedure codes |
| Paid by Medicare | $17,525 |
Part D prescriptions in 2024
| Prescriptions (claims) | 438 · 747 30-day fills |
|---|---|
| Patients | 126 |
| Total drug cost | $577,855 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Hematology |
| Secondary specialties | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Dana-Farber Cancer Institute, Inc.Boston, MA · 684 clinicians
Hospital affiliations
- Beth Israel Deaconess Hospital - NeedhamNeedham, MA
- Beth Israel Deaconess Medical CenterBoston, MA
- Brigham and Women's HospitalBoston, MA
- South Shore HospitalSouth Weymouth, MA
Industry payments (Open Payments)
- 2025$83.46 · 1 payment from 1 company
- 2024$115.57 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $83.46 | 1 |
What the 2025 payments were for
- Food and Beverage$83.46 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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