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Dr. John Grehan, MD

Dr. John Grehan, MD

Age 54 Cardiothoracic Surgery M
(83) 83 reviews
Accepting New Patients


Dr. John Grehan, MD is a cardiothoracic surgery specialist in Saint Paul, MN. Dr. Grehan completed a residency at Fairview University Med Center. He currently practices at St Paul Heart Clinic and is affiliated with United Hospital. He accepts multiple insurance plans. Dr. Grehan is board certified in Cardiovascular Surgery.

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Dr. John Grehan, MD
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  • University Michigan Health System, Fellowship Hospital — 2006
  • Fairview University Med Center, Residency Hospital — 2004
  • Fairview University Medical Center, Internship Hospital — 1996
  • University of Minnesota Medical School, Medical School — 1995
  • University of Minnesota / Twin Cities Campus, Undergraduate School — 1991

Insurance Accepted

  • Accepts most major Health Plans. Please contact our office for details.
  • Aetna
  • Anthem
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Minnesota
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • First Health (Coventry Health Care)
  • Humana

* Please verify this information when scheduling an appointment.


  1. Practice

    1. 1
      St Paul Heart Clinic
      225 Smith Ave N Ste 400, Saint Paul, MN 55102 Existing Patients: (651) 292-0007

Frequently Asked Questions

Dr. Grehan frequently treats Valve Repair or Replacement (Aortic, Mitral, Tricuspid, and Pulmonary), Mitral Valve Surgery, and Aortic Valve Surgery.  

Find contact information here to make an appointment.

Hospital Affiliations

  • United Hospital