Amir T. Fathi, M.D.
NPI 1548358476ActiveIndividual· Internal Medicine, Hematology & Oncology· Boston, MA
Internal Medicine, Hematology & Oncology (M.D.) in Boston, Massachusetts, trained at Yale University School of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $335,397 for 128 claims, against $77,158 paid for services in 2024. Daiichi Sankyo Inc. was the largest of 16 companies reporting payments in 2025, $49,493 in all, mostly consulting fees.
Overview
| NPI | 1548358476 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 10, 2006 |
| Last updated in NPPES | Feb 2, 2026 |
| Certified by provider | Feb 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 230287 | MA |
| Internal Medicine | 207R00000X | 230287 | MA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | D0065799 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 119 |
|---|---|
| Services billed | 891 across 10 procedure codes |
| Paid by Medicare | $77,158 |
Part D prescriptions in 2024
| Prescriptions (claims) | 128 · 202 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $335,397 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
- The General Hospital CorporationBoston, MA · 1,267 clinicians
Hospital affiliations
- Brigham and Women's HospitalBoston, MA
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
Other facilities
- Mass General Brigham Home Care, IncHome health agency · Newton, MA
Industry payments (Open Payments)
- 2025$49,493 · 46 payments from 16 companies
- 2024$8,569 · 14 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $12,706 | 13 |
| Astellas Pharma US Inc | $7,948 | 5 |
| Daiichi Sankyo Europe Gmbh | $5,525 | 1 |
| Abbvie Inc. | $4,748 | 9 |
| E.R. Squibb & Sons, L.L.C. | $2,865 | 1 |
What the 2025 payments were for
- Consulting Fee$45,363 · 22 payments
- Travel and Lodging$2,700 · 6 payments
- Food and Beverage$1,387 · 17 payments
- Education$43.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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