Gregory R. Olson, M.D.
NPI 1326428103ActiveIndividual· Internal Medicine, Infectious Disease· Palos Heights, IL
Internal Medicine, Infectious Disease (M.D.) in Palos Heights, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2015). 367 Medicare patients in 2024, $129,699 paid; nearly all of their 275 Part D prescriptions were generic (99%). Astellas Pharma US Inc reported $34.99 in payments in 2024, mostly education.
Overview
| NPI | 1326428103 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 5, 2015 |
| Last updated in NPPES | Dec 23, 2021 |
| Certified by provider | Dec 23, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 036.146290 | IL |
| Student in an Organized Health Care Education/Training Program | 390200000X | 264177 | MA |
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 - Infectious Disease (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 367 |
|---|---|
| Services billed | 1,795 across 9 procedure codes |
| Paid by Medicare | $129,699 |
Part D prescriptions in 2024
| Prescriptions (claims) | 275 · 311 30-day fills |
|---|---|
| Patients | 127 |
| Total drug cost | $14,740 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Infectious Disease |
Medical group
- Southwest Infectious Disease and Internal Medicine S CEvergreen, IL · 11 clinicians
Hospital affiliations
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
- 2024$34.99 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $34.99 | 1 |
What the 2024 payments were for
- Education$34.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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