Gregory J. Hanson, M.D.
NPI 1598742306ActiveIndividual· Internal Medicine, Geriatric Medicine· Rochester, MN
Internal Medicine, Geriatric Medicine (M.D.) in Rochester, Minnesota, trained at Mayo Medical School (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $408,851 for 6,821 claims, against $41,451 paid for services in 2024. Calyxo, Inc. reported $18.03 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1598742306 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 22, 2005 |
| Last updated in NPPES | Aug 14, 2020 |
| Certified by provider | Aug 14, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | 30107 | MN |
| Internal Medicine | 207R00000X | 30107 | MN |
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 - Geriatric Medicine (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 272 |
|---|---|
| Services billed | 499 across 23 procedure codes |
| Paid by Medicare | $41,451 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,821 · 6,858 30-day fills |
|---|---|
| Patients | 184 |
| Total drug cost | $408,851 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Mayo Medical School |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Geriatric Medicine |
| Secondary specialties | Internal Medicine |
Medical group
- Mayo ClinicRochester, MN · 4,956 clinicians
Hospital affiliations
- Mayo Clinic Hospital RochesterRochester, MN
- Mercy HospitalCoon Rapids, MN
Other facilities
- Mayo Clinic HospiceHospice · Rochester, MN
- Edenbrook Rochester WestNursing home · Rochester, MN
- Good Samaritan Society - ComforcareNursing home · Austin, MN
- Rochester Rehabilitation and Living CenterNursing home · Rochester, MN
- Rochester Restorative Care CenterNursing home · Rochester, MN
- Samaritan Bethany Home on EighthNursing home · Rochester, MN
Industry payments (Open Payments)
- 2025$18.03 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calyxo, Inc. | $18.03 | 1 |
What the 2025 payments were for
- Food and Beverage$18.03 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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