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THOMAS K LEE
NPI 1871512780
Surgery - Pediatric Surgery in Chicago, IL

Active since July 19, 2006PECOS Enrolled
5841 S MARYLAND AVE, CHICAGO, IL 60637(888) 824-0200 Get Directions Write a Review

NPPES record last updated: October 24, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 24, 2022, May 19, 2022, Apr 18, 2022 and 1 more (4 updates tracked since 2022).

About Thomas K Lee NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS K LEE (NPI 1871512780) is an individual pediatric surgery provider in Chicago, Illinois, licensed in Illinois (036136924) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1871512780
Entity TypeIndividualMale
Primary Taxonomy2086S0120X
Provider Legal NameTHOMAS K LEE
Location Address5841 S MARYLAND AVEChicago, IL 60637-1443
Mailing Address150 Harvester Dr, Suite 300Burr Ridge, IL 60527-5919
Phone(888) 824-0200
Sole ProprietorNo
Enumeration DateJuly 19, 2006
Last NPPES UpdateOctober 24, 20224 updates tracked since enumeration
✔ NPI 1871512780 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Pediatric SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0120X
License✔ Licensed in IL · 036136924
Definition
A surgeon with expertise in the management of surgical conditions in premature and newborn infants, children and adolescents.
5841 S MARYLAND AVE, Chicago, IL 60637
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas K Lee is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Thomas Lee reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Chicago
Same address
Multi-Specialty
5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 2,237 clinicians in this Medicare group
NPI 1821048786 (773) 702-9200
Advocate Health & Hospitals Corporation
8.1 mi
Medical Specialty
4440 W 95TH ST
Oak Lawn, IL 60453
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Advocate Health And Hospitals Corporation
  • 4,870 clinicians in this Medicare group
NPI 1912936014 (847) 390-5900

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DON MARTINEZ M.D.
Radiology (Diagnostic Radiology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 926-8318
ALEXANDRA DUMITRESCU
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
PELEG HOROWITZ
Neurological Surgery
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
SANDEEP GURBUXANI
Pathology (Hematology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200
DR. NIREN GANDRA M.D.
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-0240
ALLIE DAKROUB MD MS
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-1000
SCOTT VASHER MD
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (773) 702-1000
DR. NATHAN CHARLES NOWALK M.D.
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Cook County (888) 824-0200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas Lee's NPI number?

The NPI number for Thomas Lee is 1871512780. It was assigned to this individual provider in the NPPES registry on July 19, 2006.

Where is Thomas Lee located?

Thomas Lee practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (888) 824-0200.

What is Thomas Lee's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.

Is Thomas Lee enrolled in Medicare?

Yes. Thomas Lee is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Thomas Lee's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Lee reassigns Medicare benefits to 2 organizations: University Of Chicago (Chicago, IL) and Advocate Health & Hospitals Corporation (Oak Lawn, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Lee's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Lee accept?

Health plans from Oscar Health list Thomas Lee as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Thomas Lee was last updated on October 24, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.