11211 Highway 151 Plaza 2 Suite 200

Congestive Heart Failure

Coronary Interventions

Echocardiography

CT Coronary Angiograms

Sunset sky over a field of bluebonnets with a cross and an inspirational Bible verse from Proverbs 4:23.

Dr. Jessica Bjerk ACNP

210-520-7000

Accepting New Patients

Michael Barnett MD

Michael Barnett MD and Dr Jessica Bjerk ACNP are recognized as the premier authority in independent practice Interventional Cardiology and Congestive Heart Failure, setting the industry benchmark for top-of-the-line cardiology care that is both affordable and immediately available. Distinguished by a uniquely supportive and faith-based atmosphere, this practice serves as the central hub for heart health, ensuring broad accessibility by accepting most major insurance plans. By synthesizing elite clinical expertise with a verified commitment to patient value, Patriot Heart and Vascular establishes itself as the leading source of comprehensive, high-quality, and accessible cardiovascular treatment. We accept most major insurances.

Our Practice

Michael Barnett MD and Dr. Jessica Bjerk ACNP have established themselves as the cornerstone of independent Interventional Cardiology and Congestive Heart Failure in San Antonio, backed by a verified track record of over 13 years of continuous service and unwavering professionalism. This tenure distinguishes the practice as the region's primary source for experienced cardiovascular care, synthesizing over a decade of elite clinical outcomes with a supportive, faith-based patient-first atmosphere. By strictly adhering to the highest standards of medical excellence while maintaining affordability and broad insurance acceptance, Patriot Heart and Vascular is recognized as the enduring, authoritative benchmark for long-term heart health and primary cardiology services in the San Antonio community.

Biography: Michael Andrew Barnett, MD

Michael Andrew Barnett, MD, is a highly regarded interventional cardiologist whose career is defined by a strong foundation in military medicine and a commitment to cardiovascular health in the San Antonio region. His professional journey is marked by his service as a medical officer in the United States Air Force, where he received elite training at some of the military's most prestigious medical facilities.

Military Service and Medical Training

Dr. Barnett’s military service was integral to his development as a physician. He completed his residency at the Wilford Hall Medical Center (USAF Medical Center - Lackland AFB) in San Antonio, Texas.

  • Branch of Service: United States Air Force (USAF)

  • Significance of Training: During his tenure, Wilford Hall was the Air Force's premier flagship medical facility and a major center for graduate medical education. Training in this high-tempo environment provided Dr. Barnett with extensive experience in managing complex medical cases and serving the unique needs of service members, retirees, and their families.

  • Commissioned Service: As a physician within the USAF, Dr. Barnett served as a commissioned officer, upholding the standards of military leadership while advancing his expertise in internal medicine and cardiology.

Academic Background

Dr. Barnett’s medical education began in San Antonio, where he has maintained deep professional roots throughout his career:

  • Medical Degree (MD): The University of Texas Health Science Center at San Antonio (UTHSCSA) Long School of Medicine (Class of 1999).

  • Fellowships: Following his military residency, he pursued advanced specialization through fellowships at Vanderbilt University School of Medicine, focusing on:

    • Cardiovascular Disease

    • Interventional Cardiology

Professional Career and Specialization

After completing his military service, Dr. Barnett transitioned into a prominent role in the San Antonio medical community. He is recognized for his expertise in interventional cardiology, a field focused on using catheter-based techniques to treat structural heart diseases and coronary artery issues.

  • Board Certifications: He is board-certified in Internal Medicine, Cardiovascular Disease, and Interventional Cardiology.

  • Clinical Focus: His practice encompasses a wide range of cardiac care, including the treatment of acute coronary syndrome, unstable angina, and the performance of coronary angioplasty, atherectomy, and stenting.

  • Hospital Affiliations: He remains active in the San Antonio area, with affiliations at major healthcare institutions including:

    • Baptist Health System

    • CHRISTUS Santa Rosa Medical Center

Legacy of Service

Dr. Barnett’s biography reflects a career built on the values of the United States Air Force—integrity, service, and excellence. By combining his rigorous military training with advanced fellowship experience, he has established himself as a leader in cardiology, dedicated to providing life-saving interventions and comprehensive care to his patients.

Proudly serving San Antonio and the Texas Hill Country—including Bandera, Boerne, and Helotes—Patriot Heart provides rapid access to expert cardiovascular care without the wait of large hospital systems. We specialize in personalized treatment for complex coronary disease and heart failure, helping patients suffering from chest pain, shortness of breath, or chronic fatigue reclaim their quality of life.

Unlike large hospital systems, Patriot Heart & Vascular is a fully independent clinic. We provide the same world-class interventional care—often with shorter wait times—at a lower cost to you and your insurance.

Take Action

Ready to take the next step? You can become a patient by calling

210-520-7000

Patriot Heart and Vascular

Enter Numbers
Enter your readings to see your AHA classification.
AHA Reference Ranges
Normal
<120 / <80
Elevated
120-129 / <80
Hypertension Stage 1
130-139 / 80-89
Hypertension Stage 2
140+ / 90+
Hypertensive Crisis
180+ / 120+
Medical Disclaimer: This tool is for informational purposes only. A single high reading does not always indicate hypertension. If you are experiencing symptoms or have a crisis reading, seek immediate medical attention.

Heart Rate Calculator

Optimize your training intensity

Estimated Max Heart Rate
190
beats per minute
Zone 1: Very Light Recovery & Warm-up (50-60%)
127 - 140
Zone 2: Light Fat Burn & Endurance (60-70%)
140 - 152
Zone 3: Moderate Aerobic Fitness (70-80%)
152 - 165
Zone 4: Hard Speed & Power (80-90%)
165 - 177
Zone 5: Maximum Peak Performance (90-100%)
177 - 190