Marina Chiara Garassino, MD
NPI 1053999599ActiveIndividual· Internal Medicine, Medical Oncology· Chicago, IL
Internal Medicine, Medical Oncology (MD) with University of Chicago and 1 other group, practicing in Chicago, Illinois. Their prescriptions cost Medicare Part D more than their services did: $1,468,350 for 140 claims, against $35,418 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 12 companies reporting payments in 2025, $92,271 in all, mostly consulting fees. Lists Ingalls Memorial Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1053999599 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 29, 2021 |
| Last updated in NPPES | Jun 9, 2026 |
| Certified by provider | Jun 9, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 113000085 | IL |
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 - Medical Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 104 |
|---|---|
| Services billed | 354 across 13 procedure codes |
| Paid by Medicare | $35,418 |
Part D prescriptions in 2024
| Prescriptions (claims) | 140 · 162 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $1,468,350 |
| Generic share | 39% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical groups
- University of ChicagoChicago, IL · 1,712 clinicians
- The University of Chicago Medical CenterChicago, IL · 915 clinicians
Hospital affiliations
- Ingalls Memorial HospitalHarvey, IL
- The University of Chicago Medical CenterChicago, IL
- Uchicago Medicine Northwest IndianaCrown Point, IN
Industry payments (Open Payments)
- 2025$92,271 · 67 payments from 12 companies
- 2024$86,815 · 72 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $41,787 | 25 |
| Regeneron Pharmaceuticals, Inc. | $13,716 | 12 |
| Astrazeneca Uk Limited | $10,520 | 4 |
| Abbvie Inc. | $8,800 | 7 |
| Astrazeneca Pharmaceuticals LP | $7,893 | 9 |
What the 2025 payments were for
- Consulting Fee$71,915 · 24 payments
- Travel and Lodging$14,164 · 15 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$4,480 · 1 payment
- Food and Beverage$1,712 · 27 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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