John G. Leiner, M.D.
NPI 1962571596ActiveIndividual· Internal Medicine· Quincy, IL
Internal Medicine (M.D.) in Quincy, Illinois, trained at Virginia Commonwealth University, School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $540,662 for 4,847 claims, against $36,505 paid for services in 2024. Amgen Inc. was the largest of 3 companies reporting payments in 2025, $154.76 in all, mostly food and beverage.
Overview
| NPI | 1962571596 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 7, 2006 |
| Last updated in NPPES | Sep 18, 2026 |
| Certified by provider | Sep 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036171859 | IL |
| Internal Medicine | 207R00000X | 0101224017 | VA |
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); Practitioner - Internal Medicine (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 233 |
|---|---|
| Services billed | 929 across 14 procedure codes |
| Paid by Medicare | $36,505 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,847 · 10,387 30-day fills |
|---|---|
| Patients | 377 |
| Total drug cost | $540,662 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Virginia Commonwealth University, School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
Medical group
- Blessing HospitalQuincy, IL · 421 clinicians
Hospital affiliations
- Blessing HospitalQuincy, IL
- University of Virginia Medical CenterCharlottesville, VA
Other facilities
- Blessing Home CareHome health agency · Quincy, IL
Industry payments (Open Payments)
- 2025$154.76 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $101.59 | 2 |
| Pfizer Inc. | $34.87 | 2 |
| Exact Sciences Corporation | $18.30 | 1 |
What the 2025 payments were for
- Food and Beverage$154.76 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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