SAI SI THU MD
NPI 1063875722
Psychiatry & Neurology - Neurology in Belleville, IL
About Sai Si Thu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SAI SI THU MD (NPI 1063875722) is an individual neurology provider in Belleville, Illinois, licensed in Illinois (036159343) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, is affiliated with Memorial Hospital, and maintains a secondary practice location in Brooklyn.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Sai Si Thu 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 Reassignment
Medicare enrollment records show Sai Si Thu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63141
- Reassigned Medicare billing, Illinois enrollment
- 507 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 10
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Hospital
Acute Care Hospitals · Belleville, ILBarnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOPhysician 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.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BELLEVILLE, IL 62226
BELLEVILLE, IL 62226
BELLEVILLE, IL 62226
BELLEVILLE, IL 62226
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 Sai Si Thu's NPI number?
The NPI number for Sai Si Thu is 1063875722. It was assigned to this individual provider in the NPPES registry on March 31, 2016.
Where is Sai Si Thu located?
Sai Si Thu practices at 4700 Memorial Dr Ste 250, Belleville, IL 62226. The listed phone number is (618) 235-3378.
What is Sai Si Thu's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Sai Si Thu enrolled in Medicare?
Yes. Sai Si Thu 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 organization bills Medicare for Sai Si Thu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sai Si Thu reassigns Medicare benefits to Fairview Heights Medical Group, Sc (Saint Louis, MO). The 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 Sai Si Thu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sai Si Thu accept?
Health plans from Anthem Blue Cross and Blue Shield and UnitedHealthcare list Sai Si Thu 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 Sai Si Thu affiliated with any hospitals?
According to CMS data, Sai Si Thu is affiliated with Memorial Hospital and Barnes Jewish Hospital.
When was this NPI record last updated?
The NPPES record for Sai Si Thu was last updated on July 6, 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.
# Sai Si Thu, MD · NPI 1063875722
Neurology physician in Belleville, Illinois. Individual provider, active in the CMS NPPES registry since March 31, 2016.
## Identity
- **NPI:** 1063875722 (Entity type: Individual)
- **Enumerated:** March 31, 2016
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 036159343 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4700 MEMORIAL DR STE 250, Belleville, IL 62226-5373
- **Phone:** (618) 235-3378
## 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:** Fairview Heights Medical Group, Sc (NPI 1811392210, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** July 6, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1063875722) · Data from the CMS NPPES public registry.