Jay Lawrence Koyner, M.D.
NPI 1275656340ActiveIndividual· Internal Medicine, Nephrology· Chicago, IL
Internal Medicine, Nephrology (M.D.) in Chicago, Illinois, trained at State University of New York at Stony Brook, School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $76,785 for 452 claims, against $28,720 paid for services in 2024. Vantive US Healthcare LLC was the largest of 5 companies reporting payments in 2025, $34,721 in all, mostly consulting fees.
Overview
| NPI | 1275656340 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 6, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | — | 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 - Nephrology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 130 |
|---|---|
| Services billed | 418 across 17 procedure codes |
| Paid by Medicare | $28,720 |
Part D prescriptions in 2024
| Prescriptions (claims) | 452 · 1,147 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $76,785 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Nephrology |
| 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$34,721 · 32 payments from 5 companies
- 2024$13,011 · 19 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vantive US Healthcare LLC | $14,064 | 12 |
| Alexion Pharmaceuticals, Inc. | $10,962 | 13 |
| Baxter Healthcare | $5,600 | 2 |
| Fresenius USA Marketing, Inc. | $3,964 | 4 |
| Novartis Pharmaceuticals Corporation | $130.83 | 1 |
What the 2025 payments were for
- Consulting Fee$29,780 · 9 payments
- Education$2,000 · 1 payment
- Travel and Lodging$1,964 · 9 payments
- Food and Beverage$977.17 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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