Grant D. Sievertsen, MD
NPI 1134197619ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Hinsdale, IL
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Hinsdale, Illinois, trained at Perelman School of Med at the University of Pennsylvania (class of 1974). Their prescriptions cost Medicare Part D more than their services did: $1,501,320 for 13,056 claims, against $340,341 paid for services in 2024. Pfizer Inc. was the largest of 7 companies reporting payments in 2025, $203.20 in all, mostly food and beverage.
Overview
| NPI | 1134197619 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 9, 2006 |
| Last updated in NPPES | Aug 22, 2023 |
| Certified by provider | Aug 22, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 036051989 | IL |
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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 764 |
|---|---|
| Services billed | 18,670 across 87 procedure codes |
| Paid by Medicare | $340,341 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,056 · 32,822 30-day fills |
|---|---|
| Patients | 1,022 |
| Total drug cost | $1,501,320 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Perelman School of Med at the University of Pennsylvania |
|---|---|
| Graduation year | 1974 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliation
- Uchicago Medicine Adventhealth HinsdaleHinsdale, IL
Other facilities
- Residential Home HealthHome health agency · Lisle, IL
- Uchicago Medicine Adventhealth Home CareHome health agency · La Grange, IL
Industry payments (Open Payments)
- 2025$203.20 · 9 payments from 7 companies
- 2024$134.66 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $48.93 | 2 |
| Novo Nordisk Inc | $38.12 | 2 |
| Lilly USA, LLC | $28.33 | 1 |
| Exact Sciences Corporation | $27.91 | 1 |
| Astrazeneca Pharmaceuticals LP | $21.53 | 1 |
What the 2025 payments were for
- Food and Beverage$203.20 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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