Individual Healthcare Provider
Concepcion Esteban Santillan, MD
Provider's NPPES record last updated: September 30, 2025
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1083647408
- Primary Specialty
- Psychiatry & Neurology — Neurology
- Practice Location
- Belleville, Illinois
- Sole Proprietor
- Yes
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 2:33 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Psychiatry & Neurology
Neurology
Allopathic & Osteopathic Physicians
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Taxonomy code 2084N0400X
Provider-Reported License Information
- Psychiatry & Neurology (Georgia)
- 101659
- Psychiatry & Neurology (Illinois)
- 036151944
- Psychiatry & Neurology (Wisconsin)
- 47916
- Psychiatry & Neurology (California)
- C171642
Practice Locations
Practice Location
4500 Memorial Dr Ste 400
Belleville, Illinois 62226-5360
Phone: (618) 233-3066
Additional Practice Location
1000 Johnson Ferry Rd
Atlanta, Georgia 30342-1606
Phone: (404) 851-8000
Fax: (404) 303-3759
Additional Practice Location
8201 E Riverside Blvd
Rockford, Illinois 61114-2300
Phone: (815) 971-7000
Record Information
- Enumeration Date
- July 9, 2006
- Provider's NPPES Record Last Updated
- September 30, 2025
- Certification Date
- September 30, 2025
- NPISignal NPPES Dataset
- August 2026
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