Tomasz A. Kosierkiewicz, MD
Neurology Physician · Mount Vernon, IL
Tomasz A. Kosierkiewicz, MD is a neurology physician with a practice address in Mount Vernon, Illinois, and NPI 1487645776, issued on Nov 4, 2005. Check the license (Illinois 036104826, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Tomasz A. Kosierkiewicz
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 036104826 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2605 Main St, Mount Vernon, IL 62864
- Phone
- (618) 242-7350
- Enumerated
- Nov 4, 2005
- Record last updated
- Feb 21, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 0361048261 IL
- Medicare enrollment
- Enrolled (PECOS I20120720000576); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 952 in Illinois → Look up another NPI →
Also registered at 2605 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anton Schittek, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1053418780
Verify Tomasz A. Kosierkiewicz 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 036104826Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% more Medicare Part D claims than the average neurology physician in 2024
1,453 Medicare Part D claims for 171 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Gabapentin184 claims
- Rytary184 claims
- Pregabalin161 claims
- Levetiracetam97 claims
- Pramipexole Dihydrochloride82 claims
- Clonazepam73 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: $20.44
1 payment: food and beverage; the largest payer was Amneal Pharmaceuticals LLC. The 10,858 providers of this specialty with any payment received $8,318.07 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.
Tomasz A. Kosierkiewicz among 952 neurology physician records in Illinois
Tomasz A. Kosierkiewicz, MD is one of 952 neurology physician records with a practice address in Illinois. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1989 · median 2006 among the 573 with a school on file
- Record last updated2012 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Illinois
There are 952 neurology physician records in Illinois.
All 952 in Illinois → Every provider in Mount Vernon → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Fakhre Alam, MDCarbondale, IL 629011427033828
- Mostafa Farache, MDCarbondale, IL 629011366646879
- Breyanna Grays, M.D.Carbondale, IL 629011942560800
- Jonatan Hornik, MDCarbondale, IL 629011578941753
- Ahmed Jafri, M.D.Carbondale, IL 629011376597815
- Andrea Loggini, MDCarbondale, IL 629011043695810
- Tiffany Ward, MDCarbondale, IL 629011619186269
- Syed Shah, M.D.Centralia, IL 628011508867300
Common questions
What is Tomasz A. Kosierkiewicz, MD's NPI number?
Tomasz A. Kosierkiewicz, MD's National Provider Identifier (NPI) is 1487645776, issued on Nov 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Tomasz A. Kosierkiewicz, MD located?
The NPPES record lists a practice address at 2605 Main St, Mount Vernon, IL, 62864. Phone: (618) 242-7350. Providers update this record themselves, so call before visiting.
How can I verify Tomasz A. Kosierkiewicz, MD's license?
NPPES lists Illinois license number 036104826, 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 Tomasz A. Kosierkiewicz, MD prescribe under Medicare Part D?
In 2024, Tomasz A. Kosierkiewicz, MD had 1,453 Medicare Part D claims for 171 beneficiaries; the average among neurology physician prescribers was 1,370. 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.