Michael J. Fleissner, MD
Cardiovascular Disease Physician · Belleville, IL
Michael J. Fleissner, MD is a cardiovascular disease physician with a practice address in Belleville, Illinois, and NPI 1942289459, issued on Jan 12, 2006. Check the license (Illinois 036.084308, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Michael J. Fleissner
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 036.084308 IL
100821 MO
MD100821 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4600 Memorial Dr Ste W1, Belleville, IL 62226
- Phone
- (618) 233-3066
- Enumerated
- Jan 12, 2006
- Record last updated
- Apr 30, 2026
- Fax
- (618) 233-3180
- Medicaid ID
- 203452909 MO
- Medicare enrollment
- Enrolled (PECOS I20101124000698); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1986
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,073 in Illinois → Look up another NPI →
Also registered at 4600 Memorial Dr Ste W1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew Berdy, MDCardiovascular Disease Physician1821425067
- Alexander Bolton, D.O.Internal Medicine Physician1639581127
- Elisha Boyd, FNPNurse Practitioner1649895038
- Michael Brown, MDCardiovascular Disease Physician1386817468
- Sunil Darbari, MDCardiovascular Disease Physician1932197290
- Sultan Hayat, MDCardiovascular Disease Physician1548248453
Verify Michael J. Fleissner 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 036.084308Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average cardiovascular disease physician in 2024
5,549 Medicare Part D claims for 751 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Metoprolol Succinate653 claims
- Xarelto428 claims
- Atorvastatin Calcium395 claims
- Eliquis369 claims
- Clopidogrel290 claims
- Sotalol223 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: $439.64
14 payments; by number, the most common kind was food and beverage; the largest payer was Abiomed. The 16,686 providers of this specialty with any payment received $3,819.56 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
- Fairview Heights Medical Group SCAlton, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Fleissner among 1,073 cardiovascular disease physician records in Illinois
Michael J. Fleissner, MD 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1986 · median 2001 among the 688 with a school on file
- Record last updated2026 · 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 Belleville → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Andrew Berdy, MDBelleville, IL 622261821425067
- Michael Brown, MDBelleville, IL 622261386817468
- Sunil Darbari, MDBelleville, IL 622261932197290
- Sultan Hayat, MDBelleville, IL 622261548248453
- John Lehman, MDBelleville, IL 622261568480374
- Amanullah Pathan, MDBelleveille, IL 622261093749699
- Bulent Dincer, M.D.Belleville, IL 622211609962992
- Syed Abdul-Aziz, MDBelleville, IL 622201114906005
Common questions
What is Michael J. Fleissner, MD's NPI number?
Michael J. Fleissner, MD's National Provider Identifier (NPI) is 1942289459, issued on Jan 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Fleissner, MD located?
The NPPES record lists a practice address at 4600 Memorial Dr Ste W1, Belleville, IL, 62226. Phone: (618) 233-3066. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Fleissner, MD's license?
NPPES lists Illinois license number 036.084308, 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 J. Fleissner, MD prescribe under Medicare Part D?
In 2024, Michael J. Fleissner, MD had 5,549 Medicare Part D claims for 751 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.