Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Robert Andrew Thain, MD

Individual provider Family Medicine Physician · NPI 1285737213

Robert Andrew Thain, MD is a Family Practice in O Fallon, Illinois. Qualified in 1991, 35 years ago. Practices with Sarah Bush Lincoln Health Center, a 410-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
35
Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 Springfield Ct
O Fallon, IL 62269-2495
Phone: (618) 632-3565
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 200 Richmond Ave E Ste 1, Mattoon, IL 61938-4652 — (217) 234-7000

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036-087321 (IL)

Record details

NPI number1285737213
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 6, 2006
Last updated in NPPESOctober 20, 2025
Certification dateOctober 20, 2025
Mailing address100 Springfield Ct, O Fallon, IL 62269-2495

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Sarah Bush Lincoln Health Center — 410 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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