Quick answers
- Which hospitals does John K. Lee work at?
- Medicare's official clinician data lists John K. Lee at 2 hospitals: Copley Memorial Hospital and Edward Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John K. Lee see patients?
- Medicare's clinician data lists 9 practice locations, including Naperville, IL, Schaumburg, IL and Tinley Park, IL. Call before your visit to confirm the address.
- What is John K. Lee's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John K. Lee accept Medicare assignment?
- Yes. Medicare's clinician data says John K. Lee accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John K. Lee?
- (630) 355-8000, as listed in official Medicare / NPI Registry data.
- What is John K. Lee's NPI number?
- 1265449722. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John K. Lee works
Medicare's Facility Affiliation Data lists John K. Lee at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Copley Memorial HospitalAurora, IL · Acute Care Hospital · CCN 140029
- Edward HospitalNaperville, IL · Acute Care Hospital · CCN 140231
Practice locations
Addresses where John K. Lee is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 100 Spalding Dr, Suite 3Naperville, IL 60540 (630) 355‑8000
- 1220 Hobson Rd, Suite 204Naperville, IL 60540 (630) 416‑7766
- 1325 N Meacham RdSchaumburg, IL 60173 (630) 469‑9200
- 17495 La Grange RdTinley Park, IL 60487 (708) 226‑7000
- 2100 Glenwood AveJoliet, IL 60435 (815) 725‑2121
Group practices
Medicare enrollment lists John K. Lee as a member of this group (CMS data updated 2026-10-02).
- Dupage Medical Group Ltd1,322 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Naperville
Clinicians with the same Medicare primary specialty in Naperville, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265449722 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians