Summary

Dr. John Granquist specializes in cardiovascular disease and internal medicine, bringing 26 years of experience to his practice. He earned his medical degree from Tufts University School of Medicine and has dedicated his career to treating heart conditions and providing comprehensive internal medicine care. Dr. Granquist speaks both Russian and Spanish, allowing him to communicate effectively with patients from diverse backgrounds.

Dr. Granquist practices at multiple locations throughout Connecticut, including Glastonbury, Avon, West Hartford, Hartford, and Manchester. He maintains hospital affiliations with Hartford Hospital, Saint Francis Hospital and Medical Center, New Britain General Campus, and Midstate Medical Center. His expertise includes treating heart rhythm disorders and irregular heartbeats in both adults and children. Granquist also performs electrocardiograms and oversees cardiac rehabilitation programs to help patients recover and strengthen their hearts after cardiac events. Patients have given him an average rating of 4.4.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.4
  • 26 years of experience
  • speaks Russian, Spanish
  • Tufts University School Of Medicine
  • 3 written reviews
  • 2 specialties
  • 19 areas of expertise
  • 5 hospital affiliations
  • 8 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. John Dickson Granquist has 8 locations

Consulting Cardiologists Pc

305 Western Blvd Ste 100Glastonbury, CT 06033
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Avon Wellness Center

100 Simsbury RdAvon, CT 06001
Mon6:30 am - 8:00 pm
Tue6:30 am - 8:00 pm
Wed6:30 am - 8:00 pm
Thu6:30 am - 8:00 pm
Fri6:30 am - 8:00 pm
SatClosed
SunClosed

Consulting Cardiologists Pc

433 S Main St Ste 109West Hartford, CT 06110
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Hartford Hospital

80 Seymour StHartford, CT 06102

Consulting Cardiologists Pc

305 Western BlvdGlastonbury, CT 06033
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Cardiology Pc Of Hartford

376 Tolland Tpke Ste 101Manchester, CT 06042
Mon8:30 am - 4:30 pm
Tue8:30 am - 4:30 pm
Wed8:30 am - 4:30 pm
Thu8:30 am - 4:30 pm
Fri8:30 am - 4:30 pm
SatClosed
SunClosed

Hartford Hospital

80 Seymour StHartford, CT 06106

Center For Advanced Heart Failure And Pulmonary Vascular Disease

85 Seymour StHartford, CT 06106
Mon8:00 am - 4:00 pm
Tue8:00 am - 4:00 pm
Wed8:00 am - 4:00 pm
Thu8:00 am - 4:00 pm
Fri8:00 am - 4:00 pm
SatClosed
SunClosed

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Dr. John Dickson Granquist, MD
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Dr. John Dickson Granquist, MDAnthony Paul BenaquistaMehwish MirzaDavid Benjamin Jaeger
Cardiovascular DiseaseHospital MedicineAnesthesiologyAnesthesiology
Accepts New Patients Accepts New Patients
4.4 
26 Years of Experience 10 Years of Experience 7 Years of Experience 12 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Russian, Spanish
Glastonbury , CTNew Britain , CTNEW YORK , NYHartford , CT
Med School: Tufts University School Of Medicine Med School: Ross University School Of Medicine Med School: Frank H Netter Md School Of Medicine At Quinnipiac University Med School: Saint James School Of Medicine St Vincent And The Grenadines
Current Profile
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Insurance Plans Accepted by Dr. John Dickson Granquist

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. John Dickson Granquist has the following 2 specialties

Specialty Expertise

Dr. John Dickson Granquist has the following 19 areas of expertise

  • Acute Coronary Syndrome (ACS)
  • Arrhythmia
  • Atherosclerosis
  • Atrial Fibrillation
  • Blood Clot
  • Echocardiography
  • Fainting (Syncope)
  • Heart Attack
  • Heart Block
  • Heart Diseases
  • Heart Failure
  • High Blood Pressure (Hypertension)
  • High Cholesterol
  • High Cholesterol (Hypercholesterolemia)
  • Hypertension
  • Internal Medicine
  • Nuclear Medicine
  • Stroke
  • Unstable Angina

Certifications, License, & Education

26 Years Experience

Dr. John Dickson Granquist holds an active medical license in the state of Connecticut.

Medical License

Medical Doctor with an active medical license in the state of Connecticut that expires in 2026.

Education & Training

Medical School

Graduated from Tufts University School Of Medicine in 2000.

NPI Number

Dr. Granquist's NPI number is 1699821892.

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Frequently Asked Questions

How can I make an appointment with Dr. John Granquist?
You can find contact information for Dr. John Granquist here on Vitals.
Where is Dr. John Granquist's office located?
Dr. John Granquist's office is located at 305 Western Blvd Ste 100, Glastonbury, CT, 06033.
Does Dr. John Granquist accept my insurance?
You can see the insurance plans that Dr. John Granquist accepts on their Vitals profile.
Does Dr. John Granquist accept virtual/telehealth appointments?
Dr. John Granquist has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. John Granquist speak?
Dr. John Granquist speaks Russian and Spanish.

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