Accepting new patients

Dr. John Granquist, MD

Cardiology ·  Male · Age 46

Dr. Granquist

Consulting Cardiologists

85 Seymour St Ste 719 Hartford, CT 06106

Make an Appointment

(860) 522-0604


Dr. John Granquist, MD is a cardiology specialist in Hartford, CT and has been practicing for 19 years. He graduated from Tufts University School Of Medicine in 2000 and specializes in cardiology.


Insurance Check

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Dr. Granquist accepts

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(860) 522-0604

Dr. Granquist accepts the following insurance:

Aetna
Aetna HMO
Choice PPO
Blue Cross Blue Shield
Blue Card PPO
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
Open Access
EmblemHealth
GHI PPO
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Humana
Choice Care PPO
Medicaid
MultiPlan
MultiPlan PPO
PHCS Network PPO
Oxford Health Plans
Freedom Plan
UnitedHealthCare
Choice Plus POS
Options PPO
Oxford Liberty
United Healthcare

Background Check

No malpractice claims found for Connecticut
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Granquist's experience treating your condition or procedure

Dr. Granquist's Top Procedures and Conditions

Treatment Frequency
Heart Disease
very high
very high

Treatment Frequency

Dr. Granquist treats Heart Disease more than 98% of his peers

Dr. Granquist treats this condition more than 98% of his peers

Coronary Artery Disease (CAD)
very high
very high

Treatment Frequency

Dr. Granquist treats Coronary Artery Disease (CAD) more than 96% of his peers

Dr. Granquist treats this condition more than 96% of his peers

Rating Includes other areas of care:

  • Coronary Artery Calcification
  • Coronary Artery Disease, Autosomal Dominant 1
  • Coronary Artery Disease, Autosomal Dominant 2
Hypertension
very high
very high

Treatment Frequency

Dr. Granquist treats Hypertension more than 96% of his peers

Dr. Granquist treats this condition more than 96% of his peers

Rating Includes other areas of care:

  • Accelerated Hypertension
  • Dexamethasone Sensitive Hypertension
  • Exertional Hypertension
  • Familial Hypertension
  • High-Risk Hypertension
  • Hypertension in Pheochromocytoma
  • Hypertension, Adrenal Gland-Induced
  • Hypertension, Alcohol-Induced
  • Hypertension, Bilateral Renal Artery Stenosis-Induced
  • Hypertension, Coarctation of the Aorta-Induced
  • Hypertension, Conn Syndrome-Induced
  • Hypertension, Corticosteroid-Induced
  • Hypertension, Cushing's Syndrome-Induced
  • Hypertension, Environment-Induced
  • Hypertension, Hyperaldosteronism-Induced
  • Hypertension, Kidney Disease-Induced
  • Hypertension, Nasal Decongestant-Induced
  • Hypertension, Renal Segmental Hypoplasia-Induced
  • Hypertension, Stress-Induced
  • Hypertensive Hypokalemia Familial
  • Idiopathic Pulmonary Hypertension
  • Isolated Systolic Hypertension
  • Labile Hypertension
  • Neurogenic Hypertension
  • Pediatric Hypertension
  • Portal Hypertension
  • Primary Hypertension
  • Primary Pulmonary Hypertension, Dexfenfluramine-Induced
  • Primary Pulmonary Hypertension, Familial
  • Primary Pulmonary Hypertension, Fenfluramine-Induced
  • Pulmonary Arterial Hypertension
  • Pulmonary Hypertension
  • Pulmonary Hypoxic Hypertension
  • Pulmonary Thromboembolic Hypertension
  • Pulmonary Venous Hypertension
  • Renal Hypertension
  • Resistant Hypertension
  • Secondary Hypertension
  • Secondary Pulmonary Hypertension
  • White Coat Hypertension

Dr. Granquist's conditions and procedures:

  • 24-Hour Ambulatory Electrocardiogram
  • Aneurysm and Dissection of Heart
  • 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
  • Cardiac Imaging
  • Cardiac MRI (Magnetic Resonance Imaging) of Heart or Chest
  • Cardiac Myocardial Perfusion Imaging
  • Cardiomegaly
  • Cardiomyopathy
  • Cardiovascular Stress Test
  • Cardioversion, Elective
  • Carotid Artery Disease
  • Chest Pain
  • Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
  • Coarctation of the Aorta
  • Congenital Aortic Valve Disorders
  • Congenital Heart Defects
  • Congenital Heart Disease
  • Congestive Heart Failure
  • Coronary Artery Disease (CAD)
  • Coronary Artery Dissection
  • Echocardiography
  • Electrocardiogram (EKG)
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Biopsy
  • Heart Disease
  • Heart Murmur
  • Heart Palpitations
  • High-Risk Hypertension
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypertensive Heart Disease
  • Hypotension
  • Insertion of Left Ventricular Lead for Pacemaker or Cardioverter and-or Defibrillator
  • Limb Swelling Caused by Fluid Overload
  • Mitral Valve Disease
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Pericardial Disease
  • Pulmonary Disease
  • Pulmonary Edema
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Removal or Revision of Pacemaker or Cardioverter and-or Defibrillator
  • Septal Defect
  • Stress Echocardiogram
  • Syncope
  • Thrombosis
  • Tricuspid Valve Disease
  • Vascular Disease

About Me

Biography

Dr. John Granquist, MD is a cardiology specialist in Hartford, CT and has been practicing for 19 years. He graduated from Tufts University School Of Medicine in 2000 and specializes in cardiology.

Specialties

  • Cardiology

Board Certifications

  • Advanced Heart Failure and Transplant Cardiology
  • Cardiovascular Disease
  • Internal Medicine

Education

Tufts New England Medical Center
Fellowship Hospital
2000
Tufts University School Of Medicine
Medical School
2000

Awards

Dr. Granquist's Reviews

Likelihood to recommend Dr. Granquist

5.0

Based on 21 reviews

5 Stars
100%
(21)
4 Stars
0%
(0)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
0%
(0)

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Dr. Granquist?
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Average Reported Wait Time
  • Under 10 minutes
Dr. Granquist's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. John Granquist, MD
RecentMost Helpful
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Excellent care and patient rapport.
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Dr. Granquist has been my cardiologist for almost 10 years now. He's personable, compassionate and well versed in the latest (and also tried and true) treatments. He's kept me going this long despite my own worst habits! I would definitely recommend him to anyone who wants the best cardiologist in CT.
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He is a good kind heart doctor.
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My mom's heart doctor. Takes time to answer you personally and explain details. When/if I ever need a heart doctor I'll pick Dr Granquist for sure.
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I have been a grateful patient of Dr. Granquist for 10 years. I and my family are grateful for his extraordinary levels of clinical competence and caring, and for his generosity in sharing himself with us in our times of need. John J Shaw, DMD
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Affiliated Hospitals

Check the quality of care at hospitals where Dr. Granquist treats patients.

Learn more

Hartford Hospital

Hartford, CT