NPPES file of Aug 9, 2026

Concepcion Esteban Santillan, MD

Neurology Physician · Belleville, IL

Concepcion Esteban Santillan, MD is a neurology physician with a practice address in Belleville, Illinois, and NPI 1083647408, issued on Jul 9, 2006. Check the license (Illinois 036151944, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083647408
Name
Concepcion Esteban Santillan
Credential
MD
Primary taxonomy
Neurology Physician 2084N0400X
License numbers
036151944 IL
101659 GA
C171642 CA
47916 WI
Self-reported in NPPES; status is on the state search
Practice location
4500 Memorial Dr Ste 400, Belleville, IL 62226
Phone
(618) 233-3066
Enumerated
Jul 9, 2006
Record last updated
Sep 30, 2025
Fax
(314) 996-7658
Medicaid IDs
34626300 WI
32837700 WI
Medicare enrollment
Enrolled (PECOS I20250204001869); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Concepcion Esteban Santillan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036151944
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Northside Primary Care Professional Services,llcAtlanta, GA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Concepcion Esteban Santillan among 952 neurology physician records in Illinois

Concepcion Esteban Santillan, MD is one of 952 neurology physician records with a practice address in Illinois. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 68% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1985 · median 2006 among the 573 with a school on file
  • Record last updated2025 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in Illinois

There are 952 neurology physician records in Illinois.

The 8 neurology physician records with the nearest ZIP codes

  1. Aloka Amarakone, MDBelleville, IL 622261407051329
  2. Stephen Burger, M. D.Belleville, IL 622261962424168
  3. Nahayo Esperant-Hilaire, MDBelleville, IL 622261235766148
  4. Panduranga Kini, M.D.Swansea, IL 622261205948932
  5. Paul Menell, MDBelleville, IL 622261548820210
  6. Sheikh Sadiq, MDBelleville, IL 622261164474102
  7. James Tanner, MDBelleville, IL 622261194107532
  8. Sai Si Thu, MDBelleville, IL 622261063875722

Common questions

What is Concepcion Esteban Santillan, MD's NPI number?

Concepcion Esteban Santillan, MD's National Provider Identifier (NPI) is 1083647408, issued on Jul 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Concepcion Esteban Santillan, MD located?

The NPPES record lists a practice address at 4500 Memorial Dr Ste 400, Belleville, IL, 62226. Phone: (618) 233-3066. Providers update this record themselves, so call before visiting.

How can I verify Concepcion Esteban Santillan, MD's license?

NPPES lists Illinois license number 036151944, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.