Thomas Arndt, MD
Gastroenterology Physician · Oak Lawn, IL
Thomas Arndt, MD is a gastroenterology physician with a practice address in Oak Lawn, Illinois, and NPI 1487614210, issued on Mar 24, 2006. Check the license (Illinois 036063478, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Thomas Arndt
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 036063478 IL
Self-reported in NPPES; status is on the state search - Practice location
- 9921 Southwest Hwy, Oak Lawn, IL 60453
- Phone
- (708) 425-8616
- Enumerated
- Mar 24, 2006
- Record last updated
- Dec 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (708) 425-9468
- Medicaid ID
- 036063478 IL
- Medicare enrollment
- Enrolled (PECOS I20081222000389); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 9921 Southwest Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kamran Ayub, MDGastroenterology Physician1942317243
- Charles Berkelhammer, MDSpecialist1457359697
- Brian Blumenstein, MDGastroenterology Physician1194784645
- Sarah Ehrhardt, PA-CMedical Physician Assistant1912057803
- Leah Kramer, PA-CPhysician Assistant1477173185
- Douglas Lee, MDSpecialist1144229949
Verify Thomas Arndt 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 036063478Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average gastroenterology physician in 2024
933 Medicare Part D claims for 279 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Pantoprazole Sodium208 claims
- Omeprazole95 claims
- Dicyclomine Hcl50 claims
- Linzess38 claims
- Alprazolam32 claims
- Esomeprazole Magnesium32 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 practice group's MIPS final score for 2023 (Medicare payment program): 85.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $47.60
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Bills Medicare through one group practice
- Osf Multi-Specialty GroupEvergreen, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Arndt among 887 gastroenterology physician records in Illinois
Thomas Arndt, MD is one of 887 gastroenterology physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 52% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1980 · median 2003 among the 643 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Oak Lawn → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kamran Ayub, MDOak Lawn, IL 604531942317243
- Brian Blumenstein, MDOak Lawn, IL 604531194784645
- Michael Dastice, MDOak Lawn, IL 604531952358939
- Imad Elkhatib, M.DOak Lawn, IL 604531326204991
- Wayne Lue, MDOak Lawn, IL 604531922068428
- Vincent Muscarello, MDOak Lawn, IL 604531134188675
- Samir Patel, MDOak Lawn, IL 604531982664736
- Jeffrey Port, M.D.Oak Lawn, IL 604531285635987
Common questions
What is Thomas Arndt, MD's NPI number?
Thomas Arndt, MD's National Provider Identifier (NPI) is 1487614210, issued on Mar 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Arndt, MD located?
The NPPES record lists a practice address at 9921 Southwest Hwy, Oak Lawn, IL, 60453. Phone: (708) 425-8616. Providers update this record themselves, so call before visiting.
How can I verify Thomas Arndt, MD's license?
NPPES lists Illinois license number 036063478, 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 Thomas Arndt, MD prescribe under Medicare Part D?
In 2024, Thomas Arndt, MD had 933 Medicare Part D claims for 279 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Thomas Arndt, MD's MIPS final score?
The 2023 MIPS final score is 85.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.