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keep our neighbors 

heart healthy


Proudly serving patients in the Farmington and Fredericktown area.

New Patients

If you would like to see us for any reason, please call 573-756-1813 or click here to complete an online request and we will call you back promptly.

So that we may serve you quicker, please complete as much of the New Patient Forms as possible. We'll also need your insurance card and identification.

Dr. Bryan Piotrowski

Dr. Piotrowski is board certified in Cardiovascular Disease, Nuclear Cardiology and is a Registered Physician in Vascular interpretation.  He is board certified in Vascular and Endovascular medicine, including treatment of peripheral arterial and venous diseases.  He received his medical degree from St. Louis University with cum laude honors.  His cardiology training includes three years of fellowship in cardiovascular diseases and another year in interventional cardiology at St. Louis University.  Click here to learn more.

Our providers will have clinic hours at Madison Medical twice a month on Thursday mornings. 

The address of the clinic is 611 W. Main Street, Fredericktown, MO 63645. Our office is in the Outpatient Clinic Department of the hospital.

If you would like to have your future scheduled appointment moved to the Fredericktown location, please contact our office.

All appointments and phone calls will continue to be coordinated through our main office at 573-756-1813

as we will not keep a permanent staff at the Madison location.

We are now also seeing patients in Fredericktown.

Dr. Mark Chin

Dr. Mark Chin is a cardiologist with over 40 years of experience and a history of serving the community of Farmington, Missouri. Dr. Chin attended Taipei Medical University, where he received his medical degree, and completed his internship, residency, and fellowship at St. Luke's Hospital in Chesterfield. Dr. Chin is certified in cardiology by the American Board of Internal Medicine.  Dr. Chin formally retired from working as a full time provider in the spring of 2021.  Dr. Chin is eager to return to the practice of cardiology providing the highest quality care to our patients.  His expertise and experiences are an asset to his patients and to the community. 

Click here to learn more.

Cindy Mo Heart.jpg

Cindy DuLaney, FNP-BC 

Cindy is a licensed family nurse practitioner with experience in both the inpatient and outpatient settings.  Cindy completed her graduate degree from Maryville University in St. Louis, Missouri and completed her Master of Science in Nursing at Central Methodist University in Fayette, Missouri.  

As a member of the community, Cindy is familiar with this area and has worked with local hospitals including Parkland Health Center and Madison Medical Center and has developed relationships with many of the area providers.

Click here to learn more.

We are pleased

to our introduce our

new nurse practitioner,

Mary Keegan, ANP-BC


Mary Keegan, ANP-BC

Mary is a licensed adult nurse practitioner in the state of Missouri. She retired from Saint Louis University in 2023 after 42 years.  She graduated with her masters degree in 1986 and in 1997 completed her coursework to sit for the adult nurse practitioner credentialing exam through the American Nurse Credentialing Center.  Mary has practiced as a nurse practitioner since 1997 working in general adult medicine and most recently, Oncology. She was born and raised in St. Louis, but moved to Ste Genevieve in 2013 after marrying her husband, who was born and raised there.  She loves Ste Genevieve and the surrounding areas and looks forward to caring for the people who reside here.  

Click here to learn more.

Conditions we treat:
  • Aneurysm

  • Angina and Acute Coronary Syndrome

  • Aortic Valve Disease

  • Aortic Valve Regurgitation

  • Congenital Heart Defects

  • Congenital Heart Disease

  • Coronary Artery Disease (CAD)

  • Coronary Artery Dissection

  • Heart Attack (Acute Myocardial Infarction)

  • Heart Disease

  • Mitral Valve Disease

  • Mitral Valve Regurgitation

  • Mitral Valve Stenosis

  • Septal Defect

  • Tricuspid Valve Disease

  • Vascular Disease

  • And more

Testing we perform in the office:
  • Echocardiogram

  • Carotid Ultrasound

  • Stress Testing

  • Nuclear Stress testing

  • Peripheral Vascular Studies

  • Holter Monitors/Event (MCOT) Monitors

  • Implantable Device Clinic including interpretation and follow up of pacemaker, defibrillator, and implantable loop recorders 


Masks are optional unless a patient is symptomatic or has been exposed to COVID in the past ten days. ​ While we encourage our patients to obtain COVID vaccinations, we acknowledge there are patients who have chosen to not receive the vaccination at this time.  As a result, we are asking our patients to help us in these unprecedented times.  If you have tested positive for COVID or been in direct contact with anyone who has tested positive for COVID within the past 10 days, please inform our office staff prior to coming into the office for your appointment.  If you have been experiencing fatigue, a cough or fever of any kind, please inform us prior to coming into the office.  We will do our best to evaluate you over the phone to determine if it is appropriate to postpone your appointment for a few weeks. Your cardiac care is paramount and we will be available to you by phone or in the office.  If you have any questions, please contact the office at (573) 756-1813.

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