DR. CONCEPCION ESTEBAN SANTILLAN MD
NPI 1083647408
Psychiatry & Neurology - Neurology in Belleville, IL
About Dr. Concepcion Esteban Santillan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CONCEPCION ESTEBAN SANTILLAN MD (NPI 1083647408) is an individual neurology provider in Belleville, Illinois, licensed in Georgia (101659) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Northside Hospital Duluth, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Concepcion Esteban Santillan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Concepcion Santillan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63141
- Reassigned Medicare billing, Illinois enrollment
- 507 clinicians in this Medicare group
Terre Haute, IN 47802
- Reassigned Medicare billing, California enrollment
- 117 clinicians in this Medicare group
Rockford, IL 61103
- Reassigned Medicare billing, Illinois enrollment
- 1,375 clinicians in this Medicare group
Dawsonville, GA 30534
- Reassigned Medicare billing, Georgia enrollment
- 466 clinicians in this Medicare group
Atlanta, GA 30342
- Reassigned Medicare billing, Georgia enrollment
- 783 clinicians in this Medicare group
Atlanta, GA 30322
- Reassigned Medicare billing, Georgia enrollment
- 4,840 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northside Hospital Duluth
Acute Care Hospitals · Duluth, GAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 62226 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Concepcion Santillan's NPI number?
The NPI number for Concepcion Santillan is 1083647408. It was assigned to this individual provider in the NPPES registry on July 9, 2006. The provider is also known as Concepcion G Esteban MD.
Where is Concepcion Santillan located?
Concepcion Santillan practices at 4500 Memorial Dr Ste 400, Belleville, IL 62226. The listed phone number is (618) 233-3066.
What is Concepcion Santillan's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Concepcion Santillan enrolled in Medicare?
Yes. Concepcion Santillan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Concepcion Santillan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Concepcion Santillan reassigns Medicare benefits to 6 organizations: Fairview Heights Medical Group, Sc (Saint Louis, MO), Cep America - Neurology PC (Terre Haute, IN), Rockford Health Physicians (Rockford, IL), Northside Primary Care Professional Services, LLC (Dawsonville, GA), North Atlanta Professional Services LLC (Atlanta, GA) and 1 more organization, listed in the Medicare section above. 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 Concepcion Santillan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Concepcion Santillan accept?
Health plans from Oscar Health list Concepcion Santillan 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.
Is Concepcion Santillan affiliated with any hospitals?
According to CMS data, Concepcion Santillan is affiliated with Northside Hospital Duluth.
When was this NPI record last updated?
The NPPES record for Concepcion Santillan was last updated on September 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.
# Dr. Concepcion Esteban Santillan, MD · NPI 1083647408
Neurology physician in Belleville, Illinois. Individual provider, active in the CMS NPPES registry since July 9, 2006.
## Identity
- **NPI:** 1083647408 (Entity type: Individual)
- **Enumerated:** July 9, 2006
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 101659 (Georgia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4500 MEMORIAL DR STE 400, Belleville, IL 62226-5360
- **Phone:** (618) 233-3066 · **Fax:** (314) 996-7658
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Fairview Heights Medical Group, Sc (NPI 1811392210, Saint Louis, MO); Cep America - Neurology PC (NPI 1124843586, Terre Haute, IN); Rockford Health Physicians (NPI 1023275278, Rockford, IL); Northside Primary Care Professional Services, LLC (NPI 1215369715, Dawsonville, GA); North Atlanta Professional Services LLC (NPI 1316959869, Atlanta, GA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** September 30, 2025
- **Other identifiers:** Medicaid 34626300 (WI); Medicaid 32837700 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1083647408) · Data from the CMS NPPES public registry.