John K. Lee, M.D.
NPI 1265449722ActiveIndividual· Internal Medicine· Naperville, IL
Internal Medicine (M.D.) in Naperville, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $186,716 for 3,716 claims, against $99,562 paid for services in 2024. Cytovale, Inc. was the largest of 21 companies reporting payments in 2025, $18,698 in all, mostly consulting fees.
Overview
| NPI | 1265449722 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 1, 2006 |
| Last updated in NPPES | Jan 25, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-110235 | IL |
| Family Medicine | 207Q00000X | 036-110235 | IL |
| Pediatrics | 208000000X | 036-110235 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 213 |
|---|---|
| Services billed | 2,442 across 86 procedure codes |
| Paid by Medicare | $99,562 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,716 · 9,075 30-day fills |
|---|---|
| Patients | 326 |
| Total drug cost | $186,716 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Internal Medicine |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliations
- Copley Memorial HospitalAurora, IL
- Edward HospitalNaperville, IL
Other facilities
- Residential Home HealthHome health agency · Lisle, IL
Industry payments (Open Payments)
- 2025$18,698 · 94 payments from 21 companies
- 2024$1,441 · 79 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cytovale, Inc. | $17,100 | 10 |
| Astrazeneca Pharmaceuticals LP | $388.67 | 22 |
| Amgen Inc. | $218.13 | 10 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $125.06 | 7 |
| Abbvie Inc. | $116.17 | 6 |
What the 2025 payments were for
- Consulting Fee$17,100 · 10 payments
- Food and Beverage$1,598 · 84 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Naperville
- 1023078631
- 1063668192
- 1124282546
- 1144270976
- 1164418729
- 1164539094
- 1174728430
- 1184253544
- 1255396511
- 1265400972
- 1265548093
- 1285168526
All 114 internal medicine physicians in Naperville · All internal medicine physicians in Illinois