Jack R. Chamberlin, M.D.
NPI 1215980321ActiveIndividual· Internal Medicine, Interventional Cardiology· Elk Grove Village, IL
Internal Medicine, Interventional Cardiology (M.D.) in Elk Grove Village, Illinois, trained at University of Nebraska College of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $690,908 for 7,487 claims, against $299,830 paid for services in 2024. Endologix LLC was the largest of 12 companies reporting payments in 2025, $582.86 in all, mostly food and beverage.
Overview
| NPI | 1215980321 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 18, 2006 |
| Last updated in NPPES | Apr 10, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 036-086925 | IL |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 036086925 | 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 - Interventional Cardiology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 894 |
|---|---|
| Services billed | 3,565 across 119 procedure codes |
| Paid by Medicare | $299,830 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,487 · 20,240 30-day fills |
|---|---|
| Patients | 1,146 |
| Total drug cost | $690,908 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical group
- Alexian Brothers Specialty GroupElk Grove Village, IL · 46 clinicians
Hospital affiliations
- Alexian Brothers Medical Center 1Elk Grove Village, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Saint Joseph Hospital-ElginElgin, IL
- St Alexius Medical CenterHoffman Estates, IL
Industry payments (Open Payments)
- 2025$582.86 · 19 payments from 12 companies
- 2024$899.10 · 30 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Endologix LLC | $88.62 | 1 |
| Veryan Medical Incorporated | $72.81 | 3 |
| Angiodynamics, Inc. | $66.76 | 2 |
| Cook Medical LLC | $66.43 | 3 |
| Becton, Dickinson and Company | $63.78 | 3 |
What the 2025 payments were for
- Food and Beverage$582.86 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Interventional Cardiology providers in Illinois →