Robert Thain, MD
Family Medicine Physician · O Fallon, IL
Robert Thain, MD is a family medicine physician with a practice address in O Fallon, Illinois, and NPI 1285737213, issued on Sep 6, 2006. Check the license (Illinois 036-087321, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Robert Thain
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036-087321 IL
Self-reported in NPPES; status is on the state search - Practice location
- 100 Springfield CT, O Fallon, IL 62269
- Phone
- (618) 632-3565
- Enumerated
- Sep 6, 2006
- Entity
- Type 1 · individual
Also registered at 100 Springfield CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Pritchett, M.D.Family Medicine Physician1174522197
- Vanessa Stults, PA-CPhysician Assistant1689869588
Verify Robert Thain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-087321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
9% more Medicare Part D claims than the average family medicine physician in 2024
3,846 Medicare Part D claims for 511 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 88 claims were for opioids.
Most prescribed
- Atorvastatin Calcium226 claims
- Levothyroxine Sodium171 claims
- Lisinopril169 claims
- Amlodipine Besylate155 claims
- Gabapentin115 claims
- Omeprazole112 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The Medicare quality score for 2023: 94.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $291.16
16 payments, mostly food and beverage; the largest payer was Lilly USA, LLC. The 53,013 providers of this specialty with any payment received $861.30 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital or facility affiliation
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
43 family medicine physician records list a O Fallon practice address
They are 43 of the 1,077 NPPES records with a O Fallon practice address, and 5,925 family medicine physician records in Illinois.
All 43 in O Fallon → All 5,925 in Illinois → Every provider in O Fallon →
Other family medicine physician records in Illinois
- Jon Aagaard, MDWheaton, IL1750496923
- Napoleon Abando, MDWoodstock, IL1003972753
- Nikka Abaricia, MDChicago, IL1790366342
- Mohemmed AbbasChicago, IL1609612522
- Muhammad AbbasAlton, IL1588341556
- Syed AbbasWest Dundee, IL1972733103
- Stefanie AbbottMaywood, IL1861137457
- Roann Abdeladl, MDEvanston, IL1437087103
- Ashraf Abdeljaber, M.DNormal, IL1023472636
- Ahmed Abdelkader, MDChicago, IL1659104230
Common questions
What is Robert Thain, MD's NPI number?
Robert Thain, MD's National Provider Identifier (NPI) is 1285737213, issued on Sep 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Thain, MD located?
The NPPES record lists a practice address at 100 Springfield CT, O Fallon, IL, 62269. Phone: (618) 632-3565. Providers update this record themselves, so call before visiting.
How can I verify Robert Thain, MD's license?
NPPES lists Illinois license number 036-087321, 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.
How much does Robert Thain, MD prescribe under Medicare Part D?
In 2024, Robert Thain, MD had 3,846 Medicare Part D claims for 511 beneficiaries; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.
What is Robert Thain, MD's Medicare quality score?
The 2023 MIPS final score is 94.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.