Summary

Interventional cardiology and nuclear medicine are central to Dr. John Haley's practice, alongside cardiology. He treats cardiac arrhythmia, bradycardia, and sinus bradycardia, and performs Holter monitor testing. Dr. Haley has practiced for 32 years and is affiliated with Mayo Clinic Health System Fairmont, Mayo Clinic Health System in Mankato, Mayo Clinic Hospital Methodist Campus, Mayo Clinic Hospital Saint Marys Campus, Mayo Clinic Health Systems Austin, Olmsted Medical Center, and Mayo Eugenio Litta Children's Hospital. He completed his residency at Mayo Clinic and received his MD from the University of Minnesota Medical School, and sees patients in Mankato and Rochester, Minnesota. Patients on Vitals rate Dr. Haley 5 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 5
  • 32 years of experience
  • speaks English
  • Mayo Clinic And Medical School
  • 1 written review
  • 3 specialties
  • 7 areas of expertise
  • 7 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

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

Office Locations

Dr. John Hardwick Haley has 4 locations

Mayo Clinic Health System In Mankato

1025 Marsh StMankato, MN 56001
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

Mayo Clinic

200 1st St SwRochester, MN 55905
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

Mayo Clinic Hospital Saint Marys Campus

1216 2nd St SwRochester, MN 55902

Mayo Clinic Hospital Methodist Campus

201 Center St WRochester, MN 55902

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Dr. John Hardwick Haley, MDMackenzie Marie RennekeDr. Ripudamanjit Singh, MDDr. Hugo Jose Macchi Cattoni SR.
CardiologyNurse PractitionerInterventional CardiologyCardiology
Accepts New Patients
5 
0 
0 
0 
32 Years of Experience 36 Years of Experience 12 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English
Mankato , MNMankato , MNMankato , MNMankato , MN
Med School: University Of Minnesota Medical School Med School: Government Medical College Patiala Med School: Univ Catolica Nuestra Senora De La Asuncion Fac De Ciencias Asuncion
Current Profile
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Insurance Plans Accepted by Dr. John Hardwick Haley

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. John Hardwick Haley has the following 3 specialties

Specialty Expertise

Dr. John Hardwick Haley has the following 7 areas of expertise

  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Interventional Cardiology
  • Nuclear Medicine
  • Unstable Angina

Certifications, License, & Education

32 Years Experience

Dr. John Hardwick Haley holds an expired medical license in the state of Minnesota.

Medical License

Medical Doctor with an expired medical license in the state of Minnesota that expired in 2026.

Education & Training

Residency

Completed their residency at Mayo Clinic And Medical School.

Medical School

Graduated from University Of Minnesota Medical School in 1994.

NPI Number

Dr. Haley's NPI number is 1912983834.

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Frequently Asked Questions

Does Dr. John Haley accept virtual/telehealth appointments?
Dr. John Haley has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. John Haley accepting new patients?
Dr. John Haley is accepting new patients on Vitals. View Dr. John Haley's profile on Vitals to make an appointment.
How can I make an appointment with Dr. John Haley?
You can find contact information for Dr. John Haley here on Vitals.
Does Dr. John Haley accept my insurance?
You can see the insurance plans that Dr. John Haley accepts on their Vitals profile.
Which hospitals is Dr. John Haley affiliated with?
Dr. John Haley is affiliated with MAYO CLINIC HEALTH SYSTEM FAIRMONT, Mayo Clinic Health System In Mankato, Mayo Clinic Hospital Methodist Campus, Mayo Clinic Hospital Saint Marys Campus, Mayo Clinic Health Systems Austin, Olmsted Medical Center, and Mayo Eugenio Litta Childrens Hospital.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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