Mark D. Preuss, MD
Family Medicine Physician · Steeleville, IL
Mark D. Preuss, MD is a family medicine physician with a practice address in Steeleville, Illinois, and NPI 1952368110, issued on Apr 28, 2006. Check the license (Illinois 036080189, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mark D. Preuss
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036080189 IL
Self-reported in NPPES; status is on the state search - Practice location
- 9 Westwood Dr, Steeleville, IL 62288
- Phone
- (618) 965-3466
- Enumerated
- Apr 28, 2006
- Record last updated
- May 29, 2026
- Fax
- (618) 965-9418
- Medicare enrollment
- Enrolled (PECOS I20060314000419); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 9 Westwood Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Chamness, PA-CPhysician Assistant1861459034
Verify Mark D. Preuss 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 036080189Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,206 Medicare Part D claims for 371 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 350 claims were for opioids.
Most prescribed
- Levothyroxine Sodium381 claims
- Amlodipine Besylate336 claims
- Atorvastatin Calcium284 claims
- Omeprazole267 claims
- Gabapentin259 claims
- Losartan Potassium200 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.
Industry payments in 2024: $48.69
3 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Sparta Community Hospital D/B/A Quality Healthcare ClinicsSparta, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark D. Preuss among 6,215 family medicine physician records in Illinois
Mark D. Preuss, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1984 · median 2006 among the 3,714 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 family medicine physician record lists a practice address in Steeleville
They are 1 of the 10 NPPES records with a practice address in Steeleville, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Steeleville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Scott Barclay, M.D.Sparta, IL 622861477502862
- David Chung, MDSparta, IL 622861417914557
- Russell Coulter, MDSparta, IL 622861548227606
- Febijesusola Oyelana, MDSparta, IL 622861679144315
- Elvira Salarda, MDSparta, IL 622861114984283
- Christopher Schenewerk, MDSmithton, IL 622851154328722
- Erin Fancher Gagen, MDTrenton, IL 622931184657090
- Deborah Bross, MDTroy, IL 622941487692430
Common questions
What is Mark D. Preuss, MD's NPI number?
Mark D. Preuss, MD's National Provider Identifier (NPI) is 1952368110, issued on Apr 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Preuss, MD located?
The NPPES record lists a practice address at 9 Westwood Dr, Steeleville, IL, 62288. Phone: (618) 965-3466. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Preuss, MD's license?
NPPES lists Illinois license number 036080189, 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 Mark D. Preuss, MD prescribe under Medicare Part D?
In 2024, Mark D. Preuss, MD had 9,206 Medicare Part D claims for 371 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.