Hanna Kim Gaggin, M.D., M.P.H.
NPI 1760597728ActiveIndividual· Internal Medicine, Cardiovascular Disease· Boston, MA
Internal Medicine, Cardiovascular Disease (M.D., M.P.H.) in Boston, Massachusetts, trained at Eastern Virginia Medical School (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $15,260,478 for 1,629 claims, against $74,742 paid for services in 2024. Alexion Pharmaceuticals, Inc. was the largest of 9 companies reporting payments in 2025, $156,336 in all, mostly consulting fees.
Overview
| NPI | 1760597728 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., M.P.H. |
| Sole proprietor | No |
| NPI issued | Aug 20, 2006 |
| Last updated in NPPES | Oct 19, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 230005 | MA |
| Internal Medicine | 207R00000X | 230005 | MA |
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 - Cardiovascular Disease (Cardiology) (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 314 |
|---|---|
| Services billed | 915 across 16 procedure codes |
| Paid by Medicare | $74,742 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,629 · 3,480 30-day fills |
|---|---|
| Patients | 202 |
| Total drug cost | $15,260,478 |
| Generic share | 44% of claims |
Education and affiliations
| Medical school | Eastern Virginia Medical School |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
Hospital affiliations
- Brigham and Women's HospitalBoston, MA
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
- North Shore Medical Center -Salem, MA
- Wentworth-Douglass HospitalDover, NH
Industry payments (Open Payments)
- 2025$156,336 · 60 payments from 9 companies
- 2024$61,755 · 30 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $47,708 | 5 |
| Novo Nordisk As | $40,507 | 11 |
| Alnylam Pharmaceuticals Inc. | $16,009 | 15 |
| Merck Sharp & Dohme LLC | $14,553 | 10 |
| Bridgebio Pharma, Inc. | $13,593 | 6 |
What the 2025 payments were for
- Consulting Fee$126,966 · 24 payments
- Travel and Lodging$27,924 · 16 payments
- Food and Beverage$1,446 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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