Dr. John Grehan, Heart Surgeon

Saint Paul, MN, Unregistered surgeon [What's this?]

Patient Recommendations (1)

"Dr. Grehan and his staff were amazing. All my questions were answered and I was put at ease for this surgery. I would highly recommend anyone who has to have heart surgery to have this great surgeon and his staff to be your choice. I sincerely thank you Dr. Grehan and your wonderful nurses for making this scary surgery so much easier to go thru."

Posted by Karen Meyers

Valve Specialist

Dr. Luis Castro

Northwestern Medicine
Redwood City, CA

Have A Question? Call Us at (888) 725-4311

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