Richard Larson
NPI 1114089661ActiveIndividual· Internal Medicine, Hematology & Oncology· Chicago, IL
Internal Medicine, Hematology & Oncology in Chicago, Illinois, trained at Stanford University School of Medicine (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $1,105,386 for 251 claims, against $17,878 paid for services in 2024. Epizyme, Inc. was the largest of 2 companies reporting payments in 2025, $757.39 in all, mostly consulting fees.
Overview
| NPI | 1114089661 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Dec 14, 2006 |
| Last updated in NPPES | Oct 24, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036057429 | 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 - Hematology/Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 95 |
|---|---|
| Services billed | 261 across 14 procedure codes |
| Paid by Medicare | $17,878 |
Part D prescriptions in 2024
| Prescriptions (claims) | 251 · 338 30-day fills |
|---|---|
| Patients | 36 |
| Total drug cost | $1,105,386 |
| Generic share | 47% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- University of ChicagoChicago, IL · 1,712 clinicians
- The University of Chicago Medical CenterChicago, IL · 915 clinicians
Hospital affiliation
- The University of Chicago Medical CenterChicago, IL
Industry payments (Open Payments)
- 2025$757.39 · 2 payments from 2 companies
- 2024$10,265 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Epizyme, Inc. | $637.50 | 1 |
| Novartis Pharmaceuticals Corporation | $119.89 | 1 |
What the 2025 payments were for
- Consulting Fee$637.50 · 1 payment
- Food and Beverage$119.89 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 251 hematologist-oncologists in Chicago · All hematologist-oncologists in Illinois