Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Michael J Fleissner, MD

Individual provider Cardiovascular Disease Physician · NPI 1942289459

Dr. Michael J Fleissner, MD is an Interventional Cardiology in Belleville, Illinois. Graduated from Medical College of Wisconsin in 1986, 40 years ago. Practices with Fairview Heights Medical Group SC, a 448-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
40
Trained at
Medical College of Wisconsin
Licensed in
IL, MO
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4600 Memorial Dr Ste W1
Belleville, IL 62226-5359
Phone: (618) 233-3066
Fax: (618) 233-3180
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 6810 State Route 162 Ste 102, Maryville, IL 62062-8560 — (618) 288-4076
  • 6810 State Route 162, Maryville, IL 62062-8501 — (618) 488-4076
  • 1225 Graham Rd Ste C-2310, Florissant, MO 63031-8023 — (314) 953-6300

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 036.084308 (IL)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 100821 (MO)
Specialist Taxonomy 174400000X · Licence MD100821 (MO)

Record details

NPI number1942289459
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 12, 2006
Last updated in NPPESApril 30, 2026
Certification dateApril 30, 2026
Mailing addressPo Box 959203, Saint Louis, MO 63195-9203

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERVENTIONAL CARDIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1986 (40 years in practice)
Group practice Fairview Heights Medical Group Sc — 448 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations11 on file with Medicare

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