Dr. Alexander Johnson, MD

Dr. Alexander Johnson, MD

Cardiology  |  

Accepting new patients

Dr. Alexander Johnson, MD is a cardiology doctor who practices in St Petersburg, FL. He has been practicing for 22 years. Dr. Johnson is affiliated with Northside Hospital &Tampa Bay Heart Institute, Palms of Pasadena Hospital, Saint Anthony's Hospital and Bayfront Medical Center.

Learn about Dr. Johnson

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you


Top Care Areas


See how frequently Dr. Johnson performs your care needs compared to other doctors.

very high
more than 99% of peers
Vascular Disease
very high
more than 97% of peers
Heart Disease
very high
more than 97% of peers

Dr. Johnson's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

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Care Philosophy

This content was provided by Dr. Johnson "We have forged in new frontiers of cardiovascular care and treatment through advances in nuclear medicine, cutting edge technology and research, and the development of preventive and educational services. Coupled with highly trained physicians and medical staff, The Heart Institute has established itself as a "Center of Excellence" in the care and treatment of cardiovascular disease."


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  • Cardiology
  • Interventional Cardiology

Board Certifications

  • Cardiovascular Disease
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Abdominal Aortic Aneurysm (AAA)
  • Aneurysm
  • Aneurysm of Heart
  • Angina
  • Angina and Acute Coronary Syndrome
  • Aortic Aneurysm
  • Aortic Dissection
  • Aortic Ectasia
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Arrhythmias
  • Atrial Fibrillation
  • Atrial Flutter
  • Benign Tumor
  • Cardiac Arrest
  • Cardiomegaly
  • Cardiomyopathy
  • Carotid Artery Disease
  • Carotid Artery Stenosis
  • Chest Pain
  • Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
  • Congenital Aortic Valve Disorders
  • Congenital Heart Defects
  • Congenital Heart Disease
  • Congestive Heart Failure
  • Coronary Artery Disease (CAD)
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Disease
  • Heart Murmur
  • Heart Palpitations
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypotension
  • Limb Swelling Caused by Fluid Overload
  • Mitral Valve Disease
  • Mitral Valve Regurgitation
  • Palpitations
  • Pericardial Disease
  • Pericarditis
  • Primary Pulmonary Hypertension
  • Pulmonary Disease
  • Pulmonary Edema
  • Pulmonary Hypertension
  • Septal Defect
  • Syncope
  • Tachycardia
  • Thrombosis
  • Tricuspid Valve Disease
  • Vascular Disease


Read More


  • Cardiac Catheterization (incl. Coronary Angiography)
  • Cardiac Electrophysiology
  • Cardiac Imaging
  • Cardiac Myocardial Perfusion Imaging
  • Cardiovascular Stress Test
  • Cardioversion
  • Cardioversion, Elective
  • Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
  • Chest CT (incl. Heart and Lungs)
  • Coronary Angioplasty, Atherectomy and Stent
  • Dobutamine Stress Echocardiography
  • Dobutamine Thallium Stress Test
  • Echocardiography
  • Emergency Cardioversion
  • Nuclear Stress Testing
  • PET Scan
  • Pacemaker Insertion or Replacement
  • Peripheral Artery Catheterization
  • Stress Echocardiogram
  • Stress Test
  • Tilt Testing or Cardiac Event Monitors
  • Transesophageal Echocardiography (TEE)
  • Ultrasound, Cardiac

Background Check

0 Malpractice Claims

No malpractice history found for Florida.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • University of South Carolina At Columbia
    Undergraduate School | Graduated 1990
  • Medical University of South Carolina
    Medical School | Graduated 1995
  • Medical University of South Carolina
    Internship Hospital | Completed 1996
  • Medical University of South Carolina
    Residency Hospital | Completed 2001
  • Medical University of South Carolina
    Fellowship Hospital | Completed 2005
  • USAF Active Duty AFB, NC-Flight Medicine
    Other Education | Completed 1999

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Johnson has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Johnson does not have any memberships or affiliations listed. If you are Dr. Johnson and would like to add memberships or affiliations, please update your profile.

Dr. Johnson's Reviews

Likelihood of recommending Dr. Johnson to family and friends
based on 27 total reviews (11 with comments)
Dr. Johnson's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Comments (11)
in Clearwater, FL |
I cannot say enough good things about Dr. Johnson. He's friendly, personable, and always knows just how to explain things so they make sense. He treats you like you're more than just the next patient on his calendar and actually spends time with you to talk about your questions and concerns at every visit. I would highly recommend him to anyone who is looking for a cardiologist.
Thank you for connecting with us about this experience with Dr. Johnson. We will be sure to pass this appreciation along.
in St Petersburg, FL |
I was very happy with Dr. Johnson , his staff and the overall office environment. Everyone is helpful and they return your calls and patiently answer my questions. Dr. Johnson was so compassionate and understanding while I was going through one of the scariest situations in my life. He took all the time needed to ensure I had answers to my questions and treated me like a person and not a "case." I have had a great experience with them in the midst of a medical crisis.
in St Petersburg, FL |
I have been a patient of Dr. Johnson for several years and I highly recommend him. He is very cordial and an excellent communicator. Also very professional and responsive to my needs.
Thank you for sharing your experience with us!
St Petersburg, FL |
Dr Johnson was thorough , answered my questions and took his time explaining what the issues are with my heart.
in Pinellas Park, FL |
I found Dr Johnson to be personable, very knowledgeable, takes time with you to make sure you understand and he understands the situation. I also like the appearance, cleanliness and courtesy of his office staff.
in Clearwater |
It is my pleasure to write a review regarding my appointment with Dr.. Alexander Johnson at the Heart Institute.. Not only was my appointment very professional, but Dr. Johnson called me prior to the appointment to tell me the results on my echo. During and after the exam, he explained his findings in such a manner that a lay person could fully understand.
Dr. Johnson and staff aim to deliver the highest quality patient care. We love to hear about these positive experiences. Thanks for sharing!
in St. Pete Beach, FL |
Dr. Johnson's friendly, yet professional, approach is highly appreciated. He explains conditions fully, both in medical terminology, and in layman terms that is easy for a non-medical patient to understand. The office staff for the Heart Institute is very professional and ensures that you are completely happy with your visit. I highly recommend Dr. Johnson for anyone that has a need for a cardiologist.
Thank you for sharing your experience with us. Dr. Johnson takes great pride in providing his patients with the best medical care!
St Petersburg, FL |
Dr. Johnson is warm and knowledgable. I trust him in my cardiac care. His staff is very responsive.
St Petersburg,FL |
We found Dr Johnson very easy to talk to. He was very through in his exam. He explained the medical problem so we understood. He answered all our questions. He didn't rush us and we felt so comfortable .
Thank you for giving our physician a great score! Dr. Johnson and staff take great pride in serving the St. Petersburg community.
in St Petersburg, FL |
My wife was with me on my appointment and was very concerned with the seriousness of my condition. She had a lot of questions and Dr Johnson was very patient with her and answered all of her questions to her satisfaction and made it perfectly understandable to her. Not many Dr.'s would go to these lengths. He is an excellent physician.
Thank you for connecting with us about your experience. We will be sure to pass this appreciation along to Dr. Johnson!
in St Petersburg, FL |
Dr Johnson cared for me when I was admitted to St Anthony's with Angina Pectoris and a hx of CAD, PTCA and Stents. He was professional, respectful and listened to my concerns and questions. He is very knowledgable and is patient in explaining his decisions and recommendations
Have you seen Dr. Alexander Johnson, MD?

Visit Dr. Johnson

Now Accepting New Patients
Dr. Johnson accepts 20 insurance carriers
  • Aetna
  • AvMed
  • Beech Street (Multiplan)
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Florida
  • Cigna
    Cigna HMO
    Cigna PPO
    Great West Healthcare-Cigna PPO
    Open Access Plus
  • Evolutions Healthcare Systems
    Evolutions Healthcare Systems PPO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Golden Rule
  • Government Employees Health Association (GEHA)
  • HealthSmart - Interplan Health Group
    Interplan Health Group
  • Humana
  • Medical Mutual of Ohio
  • Medicare
    Blue Choice 65
  • Meritain Health
  • MultiPlan
  • Mutual of Omaha
  • PHCS
  • Tricare
  • UnitedHealthCare
    United Healthcare

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Johnson has admitting privileges

Northside Hospital &Tampa Bay Heart Institute
6000 49th St N
Saint Petersburg, FL 33709
View Hospital Profile
Palms of Pasadena Hospital
1501 Pasadena Ave S
South Pasadena, FL 33707
View Hospital Profile
Bayfront Medical Center
701 6th St S
Saint Petersburg, FL 33701
View Hospital Profile
Saint Anthony's Hospital
1200 7th Ave N
Saint Petersburg, FL 33705
View Hospital Profile

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