DR. MICHAEL J FLEISSNER (MD) – Cardiovascular Disease Physician, NPI 1942289459
Cardiovascular Disease Physician
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
1,594 CARDIOVASCULAR DISEASE (CARDIOLOGY) in IL
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Provider Addresses for DR. MICHAEL J FLEISSNER (MD)
670, Mason Ridge Center Drive, Town and Country, Saint Louis County, Missouri, 63141, United States
STE 300
SAINT LOUIS, MO 631418573
Phone: (618) 288-4076
Fax: (618) 288-4215
Type: Mailing
6810, State Route 162, Maryville, Madison County, Illinois, 62062, United States
STE 102
MARYVILLE, IL 620628501
Phone: (618) 488-4076
Fax: (618) 288-4215
Type: Location
6810 State Route 162 Ste 102
Maryville, IL 620628560
Phone: (618) 288-4076
Type: Location
6810 State Route 162
Ste 102
Maryville, IL 620628501
Phone: (618) 488-4076
Fax: (618) 288-4215
Type: Location
1225 Graham Rd Ste C-2310
Florissant, MO 630318023
Phone: (314) 953-6300
Type: Location
4600 MEMORIAL DR STE W1
BELLEVILLE, IL 622265359
Phone: (618) 233-3066
Fax: (618) 233-3180
Type: Location
PO BOX 959203
SAINT LOUIS, MO 631959203
Phone: (618) 233-3066
Fax: (618) 233-3180
Type: Mailing
6810 STATE ROUTE 162 STE 102
MARYVILLE, IL 620628560
Phone: (618) 288-4076
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 21 Open Payments records for all available years, with a total value of $620.
Total Amount is formed as General ($620) + Research ($0) + Ownership ($0) = $620.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: ABIOMED ($148).
Total Amount
$620
General + Research + Ownership
Payments
21
Total payment records
General Amount
$620
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-11-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20101123001024 | I | Interventional Cardiology | MO | TBD |
| I20101124000698 | I | Interventional Cardiology | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 379 | 269 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 329 | 260 | $0 |
| 93306 | Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 187 | 187 | $0 |
| 93296 | Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | 124 | 50 | $0 |
| 93294 | Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 112 | 45 | $0 |
Insurance plans in this area (ZIP 63141)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERVENTIONAL CARDIOLOGY | IL | 78452 | Nuclear medicine study of vessels of heart using drugs or exercise multiple studies | 37 | 37 |
| INTERVENTIONAL CARDIOLOGY | IL | 93458 | Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart | 65 | 65 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Physician Assistant | IL | |
| Family Practice | IL | |
| - | MO | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MO | |
| G A S T R O E N T E R O L O G Y | GA | |
| Physician Assistant | IL | |
| - | MO | |
| Gastroenterology, Gastroenterology, Internal Medicine | OH |
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