Dr. John Granquist, MD

Cardiology •  Male • Age 47
  
Dr. Granquist
Accepting new patients
Telehealth services available

Consulting Cardiologists

305 Western Blvd Ste 100 Glastonbury, CT 06033

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Dr. John Granquist, MD is a Cardiology Specialist in Glastonbury, CT and has over 20 years of experience in the medical field. Dr. Granquist has more experience with Adult Congenital Cardiac Disorders and Cardiac Care than other specialists in his area. He graduated from Tufts University School Of Medicine medical school in 2000. He is affiliated with medical facilities such as Hartford Hospital and Manchester Memorial Hospital. He is accepting new patients and has indicated that he accepts telehealth appointments. Be sure to call ahead with Dr. Granquist to book an appointment.


Compare with other Cardiology Specialists

Compare Dr. Granquist with our nearby Cardiology Specialists at Hartford Healthcare.

Make an appointment at Hartford Healthcare today at (860) 294-9155.

provider hospital

These providers are on the medical staff of Hartford Healthcare.

Dr. Granquist's Reviews

Likelihood to recommend Dr. Granquist

5.0

Based on 57 ratings

5 Stars
100%
(57)
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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Reply Flag
Dr. Granquist is an amazing provider! Listens to all your concerns, really cares about his patients and is very knowledgeable. Highly recommend!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
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Oct 03, 2020
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I was very pleased with the care I received. I would recommend him.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
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Sep 28, 2020
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Excellent heart specialist he listens to your concerns very knowledgeable very patient offers solutions a true stand out in his field very willing to help in any area concerning your well being and health!!!!!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
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Rocco Perugini – Aug 16, 2020
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He is what every one wants in a doctor kind,compassionate,respectful. He truly listens to you and during your visit you have his complete and undivided attention. All rare qualities these days if your looking for a cardiologist you couldnt get better than Dr Granquist.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
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Marcella Blondin – Aug 14, 2020
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Reply Flag
No rush and answered all questions and need for additional test.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
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Jul 19, 2020
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Reply Flag
Follow-up
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
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Jun 18, 2020
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Dr. Granquist was extremely professional and exceeded my expectations. He took the time to thoroughly examine me and listen to concerns. His compassionate manner reassured me that I was in the best of hands.
What went well
No results
What could be improved
No results
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Marybeth – Jun 08, 2020
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Excellent meeting with Dr. Granquist. He is a very qualified and compassionate physician. Glad to have him as my doctor. He always takes the time to ensure that all of my concerns are addressed, and he always maintains contact with my GP to keep him updated on my progress.
What went well
No results
What could be improved
No results
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Don Dobruck – May 20, 2020
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Stellar
What went well
No results
What could be improved
No results
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May 07, 2020
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On April 20, 2020, I had a teleconference with Dr. Granquist. Everything I had researched about this doctor is absolutely correct. He listened to what I had to say, explained the procedure he thought we should follow very carefully, Was conservative and his approach to finding an answer to the issue that I have at this time. At 72 years old this is the first time I felt a comfort level with a Doctor Who even though he admitted to not having expertise with this condition, did not dismiss my concerns but came up with a plan to explore a possible solution. I think he is a straightforward, competent, compassionate doctor. If you are looking for a Doctor Who will take the time and listen then Dr. Granquist is who you’re looking for.
What went well
No results
What could be improved
No results
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Tricia S – Apr 21, 2020
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I had an appointment with Dr. Grandquist on Telemedicine. It was VERY impressive. I was able to communicate all my concerns with Dr. Grandquist and he answered all those concerns. This technology was excellent! The pre-appointment provider was also excellent. She gave a timeline as to what I should expect and it was exactly what I experienced.
What went well
No results
What could be improved
No results
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Valerie Gange – Apr 09, 2020
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From signing in, to the triage, to the consultation was a very pleasant and relaxing atmosphere. The longest doctor I have had which helped me to understand what I am facing. No sugarcoating, straight facts and solutions. Great doctor.
What went well
No results
What could be improved
No results
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Michael Henry – Mar 21, 2020
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Top notch professional and easy to talk to answers all my questions
What went well
No results
What could be improved
No results
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Mar 13, 2020
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Dr Granquist sets the bar high for how all doctors “ should “ be . He’s kind , compassionate , easy to talk too , and took the time to listen to me and answer all my questions in detail . I would definitely refer friends , family and the patients at my practice to him . I was so impressed !
What went well
No results
What could be improved
No results
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Allyson Z – Feb 29, 2020
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As a new patient, I was very pleased with Dr. Granquist (and his staff). He is personable, knowledgeable and explains everything well. You don’t feel rushed. I regret since I am moving this summer I can’t keep him as my cardiologist.
What went well
No results
What could be improved
No results
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Scott – Feb 28, 2020
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Dr. Granquist is an excellent cardiologist! I was referred to him as a new patient and he couldn't of did a better job making me feel comfortable as one! Once again thank you for being so kind.
What went well
  • Appointment wasn't rushed
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Difficult to schedule appointment
  • Staff wasn't friendly
  • Long wait times
  • Didn't listen or answer questions
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Temika Husbands – Feb 05, 2020
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Dr. Granquist is caring, smart and accessible.
What went well
No results
What could be improved
No results
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Jan 18, 2020
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Dr. Granquist was delightful. Very personable, asked questions and allowed adequate to allow me to respond and clearly listened to my history and concerns. I did not feel rushed at all. My impression is that he is both competent and caring. A very nice combination.
What went well
No results
What could be improved
No results
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Joan Munger – Jan 08, 2020
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Reply Flag
Excellent visit. Felt assured after consultation!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Was this helpful?
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Don Vogel – Dec 20, 2019
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Dr Grandquist is so kind and compassionate. You can tell he enjoys what he does.
What went well
No results
What could be improved
No results
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Dec 19, 2019
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About Me

Biography

Dr. John Granquist, MD is a Cardiology Specialist in Glastonbury, CT and has over 20 years of experience in the medical field. Dr. Granquist has more...Read more

Specialties

  • Cardiology

Board Certifications

  • Advanced Heart Failure and Transplant Cardiology
  • Internal Medicine

Education

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

Awards

Frequently Asked Questions

Does Dr. John Granquist, MD offer telehealth services?

Is Dr. John Granquist, MD accepting new patients?

Does Dr. John Granquist, MD accept my insurance?

Insurance Check

Search for your insurance provider

Dr. Granquist accepts

Accepted insurance can change. Please double-check when making an appointment.

(860) 522-0604

Dr. Granquist accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Choice PPO
Anthem
Access Blue New England Network-CT
Balanced Pathway Tiered-CT PPO
Balanced Pathway-CT HMO
Balanced Pathway-CT PPO
Blue New England Network-CT HMO
BlueCare Health Plan (with Expanded Network - Tiered)-CT
BlueCare Health Plan (with Expanded Network)-CT
BlueCare Select (Tiered - Charter)-CT
BlueCare Select (Tiered - Elm)-CT
BlueChoice New England Network-CT
Bronze Pathway X Enhanced Tiered-CT HMO
Bronze Pathway X w/HSA-CT HMO
Bronze Pathway X w/HSA-CT PPO
Bronze Pathway X-CT PPO
Bronze Standard Pathway X for HSA-CT PPO
Bronze Standard Pathway X-CT PPO
Catastrophic Pathway X Enhanced-CT HMO
Century Preferred (Tiered)-CT
Century Preferred Select (Tiered - Charter)-CT
Century Preferred Select (Tiered - Elm)-CT
Century Preferred Tiered (Select Network)-CT
Century Preferred-CT
Choice BlueCare-CT HMO
Choice Century Preferred Basic-CT PPO
City of New Haven - BlueCard-CT
City of New Haven - Century Preferred-CT
CT Children's Medical Center - Tiered-CT PPO
Day Kimball Tiered-CT PPO
Gold Pathway X Enhanced Tiered-CT HMO
Gold Pathway X-CT HMO
Gold Pathway X-CT PPO
Gold Standard Pathway X-CT PPO
National (BlueCard Basic) PPO
National (BlueCard) PPO
Pathway CT (Small Grp)-CT HMO
Pathway CT (Small Grp)-CT PPO
Pathway CT Tiered (Small Grp)-CT PPO
Pathway Enhanced (Ind)-CT HMO
Pathway Enhanced Tiered (Ind)-CT HMO
Pathway X (Ind)-CT PPO
Pathway X (Small Grp)-CT HMO
Pathway X (Small Grp)-CT PPO
Pathway X Enhanced (Ind -)-CT HMO
Pathway X Enhanced Tiered (Ind)-CT HMO
Pathway X Ind PPO Direct Access CT
Platinum Pathway X-CT PPO
Silver Pathway X Tiered-CT PPO
Silver Pathway X w/HSA-CT HMO
Silver Pathway X w/HSA-CT PPO
Silver Pathway X-CT PPO
Silver Standard Coinsurance Pathway X-CT PPO
Silver Standard Pathway X-CT PPO
State BlueCare (Local Network only)-CT
State BlueCare (with Expanded Network - Tiered)-CT
State BlueCare (with Expanded Network)-CT
State Preferred (Tiered)-CT
State Preferred-CT
USA-CT PPO
Yale New Haven Health System - Tiered-CT PPO
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of Louisiana
BlueConnect HMO
Blue Cross Blue Shield of Massachusetts
Preferred Blue PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
Open Access
Open Access Plus
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

Practice Areas

Adult Congenital Cardiac Disorders

Adult congenital cardiac disorder specialists diagnose and treat heart disorders, such as arrythmias and mitral valve disease, that have been present from birth to adulthood.Compare with other Adult Congenital Cardiac Disorders specialists.

Typically treats 75% more than similar doctors

Based on claims data for 9 conditions and procedures

TreatmentsTreatment Frequency
Congenital Heart Disease
very high
very high

Treatment Frequency

Dr. Granquist treats Congenital Heart Disease more than 94% of their peers

Dr. Granquist treats this condition more than 94% of their peers

Congenital Aortic Valve Disorders
high
high

Treatment Frequency

Dr. Granquist treats Congenital Aortic Valve Disorders more than 90% of their peers

Dr. Granquist treats this condition more than 90% of their peers

Arrhythmias
high
high

Treatment Frequency

Dr. Granquist treats Arrhythmias more than 87% of their peers

Dr. Granquist treats this condition more than 87% of their peers

Cardiac Care

Cardiac care specialists diagnose and treat general cardiac conditions such as high blood pressure, angina, and arrhythmias through procedures including cardiovascular stress tests, ablation therapy, and heart valve surgery.Compare with other Cardiac Care specialists.

Typically treats 69% more than similar doctors

Based on claims data for 13 conditions and procedures

TreatmentsTreatment Frequency
Heart Disease
very high
very high

Treatment Frequency

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

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

Hypertension
very high
very high

Treatment Frequency

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

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

Coronary Artery Disease (CAD)
very high
very high

Treatment Frequency

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

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

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

Dr. Granquist's conditions and procedures:

  • 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
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • 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
  • Syncope
  • Thrombosis
  • Tricuspid Valve Disease
  • Vascular Disease

Locations

Consulting Cardiologists

Consulting Cardiologists305 Western Blvd Ste 100 Glastonbury, CT 06033
1
Consulting Cardiologists85 Seymour St Ste 719 Hartford, CT 06106
2
Consulting Cardiologists1060 Day Hill Rd # Ct Windsor, CT 06095
3
  • Call
  • Fax
  • Hours
    • Mon: closed
    • Tue: 9:00am - 5:00pm
    • Wed: closed
    • Thu: closed
    • Fri: closed
    • Sat: closed
    • Sun: closed
  • Directions
Consulting Cardiologists74 Mack St Windsor, CT 06095
4
  • Call
  • Fax
  • Hours
    • Mon: 9:00am - 5:00pm
    • Tue: 9:00am - 5:00pm
    • Wed: closed
    • Thu: closed
    • Fri: closed
    • Sat: closed
    • Sun: closed
  • Directions
;