Dr Thomas Leslie Sims Jr, MD - Medicare Surgery in Chicago, IL

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Dr Thomas Leslie Sims Jr, MD is a medicare enrolled "Surgery - Pediatric Surgery" physician in Chicago, Illinois. His current practice location is 840 S Wood St Ste 416, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (312) 413-7707.

Dr Thomas Leslie Sims Jr is licensed to practice in Illinois (license number 036146102) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1437372828.

Contact Information

Dr Thomas Leslie Sims Jr, MD
840 S Wood St Ste 416,
Chicago, IL 60612
(312) 413-7707
(312) 355-1497

Map and Direction




Physician's Profile

Full NameDr Thomas Leslie Sims Jr
GenderMale
SpecialitySurgery - Pediatric Surgery
Location840 S Wood St Ste 416, Chicago, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1437372828
  • Provider Enumeration Date: 04/11/2007
  • Last Update Date: 09/07/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 5991940645
  • Enrollment ID: I20180814004209

Medical Identifiers

Medical identifiers for Dr Thomas Leslie Sims Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1437372828NPI-NPPES
036146102MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2086S0120XSurgery - Pediatric Surgery ME121030 (Florida)Secondary
390200000XStudent In An Organized Health Care Education/training Program (* (Not Available))Secondary
208600000XSurgery 036146102 (Illinois)Secondary
2086S0102XSurgery - Surgical Critical Care 036146102 (Illinois)Secondary
2086S0120XSurgery - Pediatric Surgery PG163428 (Oregon)Secondary
2086S0120XSurgery - Pediatric Surgery 036146102 (Illinois)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Thomas Leslie Sims Jr allows following entities to bill medicare on his behalf.
Entity NameThe Board Of Trustees Of The University Of Illinois
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386863819
PECOS PAC ID: 3072422716
Enrollment ID: O20031112000158
Entity NameLoyola University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336159961
PECOS PAC ID: 3779488903
Enrollment ID: O20031202000027
Entity NameCook County
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588612832
PECOS PAC ID: 2860398088
Enrollment ID: O20031209000747
Entity NameMount Sinai Community Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376715896
PECOS PAC ID: 5991600405
Enrollment ID: O20040202001032
Entity NameCarle Health Care Incorporated
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154653947
PECOS PAC ID: 3577515774
Enrollment ID: O20100513000829

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Thomas Leslie Sims Jr is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Thomas Leslie Sims Jr, MD
840 S Wood St Ste 416,
Chicago, IL 60612-4325

Ph: (312) 413-7707		Dr Thomas Leslie Sims Jr, MD
840 S Wood St Ste 416,
Chicago, IL 60612

Ph: (312) 413-7707

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.