Dr. Michael J. Fleissner, MD
- Medicare services, 2024
- 2,008
- Medicare patients, 2024
- 916
- Part D claims, 2024
- 5,549
- Hospital affiliations
- 3
- Industry payments
- $3,686
- Practice address
- 670 Mason Ridge Center Dr, Saint Louis, MO 63141
- Practice phone
- Call (314) 996-7644
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fairview Heights Medical Group SC
Saint Louis, Missouri
Find Dr. Fleissner's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Michael J. Fleissner is a cardiologist in Saint Louis, Missouri
Dr. Fleissner practices at Fairview Heights Medical Group SC in Saint Louis, Missouri.
Dr. Fleissner's NPI, 1942289459, was assigned on January 12, 2006. Dr. Fleissner graduated from Medical College Of Wisconsin in 1986. Dr. Fleissner holds Illinois license 036.084308.
- NPI
- 1942289459NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395755110
- NPI enumeration date
- January 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 996-7644
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael J. Fleissner practices at Fairview Heights Medical Group SC in Saint Louis, Missouri
Dr. Fleissner's primary practice is Fairview Heights Medical Group SC, at 670 Mason Ridge Center Dr, Saint Louis, MO 63141 in Saint Louis County. The practice phone is (314) 996-7644.
- Fairview Heights Medical Group SC670 Mason Ridge Center Dr, Saint Louis, MO 63141 · Saint Louis CountyPhone(314) 996-7644
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael J. Fleissner is affiliated with 6 sites of care and 2 medical groups
Dr. Fleissner's primary practice is Fairview Heights Medical Group SC in Saint Louis, Missouri. Dr. Fleissner is also affiliated with Christian Hospital. The medical group on file is BJC Medical Group. Dmand AI also links Dr. Fleissner to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael J. Fleissner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fleissner practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fairview Heights Medical Group SC | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael J. Fleissner is one of 383 cardiologists in Missouri
Cardiovascular disease is Dr. Fleissner's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Fleissner is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Fleissner's licenses on file in 3 states: Illinois, Missouri and Wisconsin.
Specialties and state licenses
- Cardiovascular disease, IllinoisPrimary
- Specialist, Missouri
- Wisconsin license
Clinical focus
Dmand AI lists angioplasty, cardiac catheterization, pacemaker or defibrillator implantation and pacemaker replacement among the conditions Dr. Fleissner treats.
Cardiologists near Dr. Fleissner
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael J. Fleissner billed Medicare for 2,008 services in 2024
CMS data shows 2,008 Medicare services from Dr. Fleissner across 26 procedure codes in 2024, for 916 Medicare patients. Medicare paid $111,624 for them.
Dr. Fleissner's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9572024: 9194%
- Tests and treatments
- 2023: 6622024: 85529%
- Other services
- 2023: 982024: 10810%
- Drugs given in the office
- 2023: 922024: 964%
- Imaging
- 2023: 252024: 3020%
Where Dr. Fleissner's Medicare services took place, 2024
- In an office1,53977%
- In a facility46923%
Dr. Fleissner compared with the Missouri median for cardiologists, 2024
- Dr. Fleissner
- Missouri median
- Medicare services
- 2,008vs 1,79712% above
- Medicare patients
- 916vs 925Close to median
- Part D claims
- 5,331vs 2,1282.5 times
Medians across 391 cardiologists in Missouri with Dmand AI profiles that report each measure.
Dr. Fleissner's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fleissner and other cardiologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael J. Fleissner treated 916 Medicare patients in 2024, average age 77
CMS counts 916 Medicare patients who saw Dr. Fleissner in 2024. The largest group is 75 to 84, with 382 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Fleissner's median patient age at 74, with 48% women.
Dr. Fleissner's Medicare patients by age, 2024
Dr. Fleissner's Medicare patients by sex, 2024
- Women43948%
- Men47752%
Chronic conditions among Dr. Fleissner's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease51%
- Arthritis50%
- Atrial fibrillation43%
- Diabetes39%
- Heart failure38%
- Chronic kidney disease37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fleissner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael J. Fleissner wrote 5,549 Medicare Part D claims in 2024
In 2024, Dr. Fleissner wrote 5,549 Medicare Part D claims for 751 patients. 79% of them were for generic drugs. CMS names the drug for 5,331 of them, across 43 drugs with 11 or more claims each, at $1,230,616 in total drug cost. In 2023, CMS named 4,746 claims across 44 drugs.
Dr. Fleissner's Part D claims by kind of drug, 2024
- Generic4,372 claims79%
- Brand-name1,177 claims21%
Dr. Fleissner's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Fleissner's Part D claims, 2024
- Antibiotics0%14 of 5,549 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,7462024: 5,33112%
Drugs named by CMS: 43 in 2024, 44 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Michael J. Fleissner takes part in Medicare
Dr. Fleissner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Michael J. Fleissner received $3,686 in industry payments from 2016 to 2025
CMS Open Payments shows 94 general payments to Dr. Fleissner from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 78% of the total. Medtronic, Inc. paid the most, $1,030.
General payments to Dr. Fleissner by program year, 2016 to 2025
General payments to Dr. Fleissner by kind, 2016 to 2025
- Food and beverage$2,86578%
- Travel and lodging$72620%
- Education$943%
Companies that paid Dr. Fleissner the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael J. Fleissner has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Fleissner, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Fleissner
- 2012
- CMS Stage 1 EHR
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. Michael J. Fleissner graduated from Medical College Of Wisconsin
Dr. Fleissner graduated from Medical College Of Wisconsin in 1986. Dr. Fleissner is a member of ACC.
- Medical school
- Board certified in cardiovascular disease
Source: Dmand AI Professional Profile Data
Dr. Michael J. Fleissner accepts plans from 17 insurance carriers
Dr. Fleissner is in network with 17 carriers, including Aetna, Elevance and Cigna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Cigna
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Humana
- +9 more carriersWith a free account
Plan types Dr. Fleissner accepts, by number of carriers
- PPO12
- Medicare9
- HMO8
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Michael J. Fleissner's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael J. Fleissner
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael J. Fleissner's NPI number?
Dr. Michael J. Fleissner's NPI number is 1942289459. It was assigned on January 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael J. Fleissner?
Dr. Michael J. Fleissner is a cardiologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Michael J. Fleissner practice?
Dr. Fleissner practices at 670 Mason Ridge Center Dr, Saint Louis, MO 63141. Dr. Fleissner's primary practice is Fairview Heights Medical Group SC in Saint Louis, Missouri. Dmand AI also links Dr. Fleissner to 2 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Michael J. Fleissner's office phone number?
The practice phone on file for Dr. Fleissner is (314) 996-7644.
What is Dr. Michael J. Fleissner's medical license number?
Dr. Fleissner holds Illinois license 036.084308, one of the licenses on file in 3 states.
Which states has Dr. Michael J. Fleissner been licensed in?
Dmand AI has state licenses on file for Dr. Fleissner in Illinois (1992 to 2026), Missouri (1992 to 2026) and Wisconsin (1989 to 1999).
Which hospitals is Dr. Michael J. Fleissner affiliated with?
Dr. Fleissner is affiliated with Christian Hospital. Dmand AI links Dr. Fleissner to 2 more hospitals.
What medical group is Dr. Michael J. Fleissner part of?
Dr. Fleissner is linked to BJC Medical Group. Dmand AI links Dr. Fleissner to 1 more medical group.
Does Dr. Michael J. Fleissner accept Medicare?
Yes. CMS data shows Dr. Fleissner billed Medicare for 2,008 services in 2024, and Dr. Fleissner accepts Medicare assignment.
How many Medicare patients does Dr. Michael J. Fleissner see?
CMS counts 916 Medicare patients who saw Dr. Fleissner in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
Is Dr. Michael J. Fleissner board certified?
Yes. Dr. Fleissner is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. Michael J. Fleissner bill to Medicare?
In 2024, Dr. Fleissner's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and heart test or procedure (93296).
Where did Dr. Michael J. Fleissner go to medical school?
Dr. Fleissner graduated from Medical College Of Wisconsin in 1986.
What drugs does Dr. Michael J. Fleissner prescribe most?
In 2024 Medicare Part D data, Dr. Fleissner's most prescribed drugs by claims were Metoprolol Succinate, Xarelto and Atorvastatin Calcium.
Has Dr. Michael J. Fleissner received payments from drug or device companies?
CMS Open Payments shows $3,686 in general payments to Dr. Fleissner from 26 companies from 2016 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Michael J. Fleissner been practicing?
Dr. Fleissner graduated from medical school in 1986, 40 years ago.
What insurance does Dr. Michael J. Fleissner accept?
Dr. Fleissner is in network with 17 carriers, including Aetna, Elevance and Cigna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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