Michael Grzeskowiak
Cardiovascular Disease Physician · Peoria, IL
Michael Grzeskowiak is a cardiovascular disease physician with a practice address in Peoria, Illinois, and NPI 1215469218, issued on Mar 29, 2017. Check the license (Illinois 036171425, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Michael Grzeskowiak
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 036171425 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5405 N Knoxville Ave, Peoria, IL 61614
- Phone
- (309) 691-4410
- Enumerated
- Mar 29, 2017
- Record last updated
- Dec 3, 2024
- Fax
- (309) 692-4730
- Medicare enrollment
- Enrolled (PECOS I20240819002215); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,073 in Illinois → Look up another NPI →
Also registered at 5405 N Knoxville Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amjad Abualsuod, MDClinical Cardiac Electrophysiology Physician1427346444
- Whitney Andal, APNFamily Medicine Physician1255934378
- Timir Baman, MDClinical Cardiac Electrophysiology Physician1831230812
- Marco Barzallo, M.D.Cardiovascular Disease Physician1316971823
- Rebecca Baumann, M.D.Cardiovascular Disease Physician1275797078
- David Best, MDCardiovascular Disease Physician1447284989
Verify Michael Grzeskowiak 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 036171425Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
740 Medicare Part D claims for 224 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Metoprolol Tartrate124 claims
- Atorvastatin Calcium65 claims
- Furosemide62 claims
- Carvedilol56 claims
- Isosorbide Mononitrate Er55 claims
- Metoprolol Succinate54 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.
Bills Medicare through one group practice
- Osf Multi-Specialty GroupCanton, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Grzeskowiak among 1,073 cardiovascular disease physician records in Illinois
Michael Grzeskowiak is one of 1,073 cardiovascular disease 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 2017, is newer than 82% of them.
- NPI issued2017 · 82% of these records are older, 16% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2017 · median 2001 among the 688 with a school on file
- Record last updated2024 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Illinois
There are 1,073 cardiovascular disease physician records in Illinois.
All 1,073 in Illinois → Every provider in Peoria → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Marco Barzallo, M.D.Peoria, IL 616141316971823
- David Best, MDPeoria, IL 616141447284989
- Barry Clemson, MDPeoria, IL 616141942234323
- Darrel Gumm, MDPeoria, IL 616141669406054
- Mark Hsu, MDPeoria, IL 616141376573428
- Mark Jackson, MDPeoria, IL 616141952331019
- Tinoy Kizhakekuttu, MDPeoria, IL 616141558336214
- Donald McElroy, M.D.Peoria, IL 616141598799926
Common questions
What is Michael Grzeskowiak's NPI number?
Michael Grzeskowiak's National Provider Identifier (NPI) is 1215469218, issued on Mar 29, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Michael Grzeskowiak located?
The NPPES record lists a practice address at 5405 N Knoxville Ave, Peoria, IL, 61614. Phone: (309) 691-4410. Providers update this record themselves, so call before visiting.
How can I verify Michael Grzeskowiak's license?
NPPES lists Illinois license number 036171425, 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 Michael Grzeskowiak prescribe under Medicare Part D?
In 2024, Michael Grzeskowiak had 740 Medicare Part D claims for 224 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.