ROBERT ANDREW THAIN MD
NPI 1285737213
Family Medicine in O Fallon, IL
About Robert Andrew Thain Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT ANDREW THAIN MD (NPI 1285737213) is an individual family medicine provider in O Fallon, Illinois, licensed in Illinois (036-087321) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Hshs St Elizabeth's Hospital, and maintains a secondary practice location in Mattoon.
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
Robert Andrew Thain 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 Robert Thain reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Vandalia, IL 62471
- Reassigned Medicare billing, Illinois enrollment
- 652 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 5
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.
Hshs St Elizabeth's Hospital
Acute Care Hospitals · O Fallon, ILSarah Bush Lincoln Health Center
Acute Care Hospitals · Mattoon, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 62269 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 19
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Robert Thain's NPI number?
The NPI number for Robert Thain is 1285737213. It was assigned to this individual provider in the NPPES registry on September 6, 2006.
Where is Robert Thain located?
Robert Thain practices at 100 Springfield Ct, O Fallon, IL 62269. The listed phone number is (618) 632-3565.
What is Robert Thain's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Robert Thain enrolled in Medicare?
Yes. Robert Thain 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 Robert Thain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Thain reassigns Medicare benefits to Sarah Bush Lincoln Health Center (Vandalia, IL). 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 Robert Thain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Robert Thain accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Robert Thain 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 Robert Thain affiliated with any hospitals?
According to CMS data, Robert Thain is affiliated with Hshs St Elizabeth's Hospital and Sarah Bush Lincoln Health Center.
When was this NPI record last updated?
The NPPES record for Robert Thain was last updated on October 20, 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.