Dr. John Grehan, MD

Dr. John Grehan, MD

Cardiothoracic Surgery  |  
Male  |  
Age 54
(83)
Save
Dr. John Grehan, MD is a cardiothoracic surgery specialist in Saint Paul, MN and has been practicing for 16 years. He graduated from University of Minnesota Medical School in 1995 and specializes in cardiothoracic surgery.

225 Smith Ave N Ste 400

Saint Paul, MN 55102

Contact Information

(651) 292-0007

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.

Background Check

Healthgrades does not collect malpractice claims information for Minnesota
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

Insurance Check

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Dr. Grehan accepts most major insurance plans.

Dr. Grehan has indicated that he accepts most major insurance carriers

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Experience Check

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

Dr. Grehan's Top Procedures and Conditions

Treatment Frequency
Valve Repair or Replacement (Aortic, Mitral, Tricuspid, and Pulmonary)
normal
normal

Treatment Frequency

Dr. Grehan performs Valve Repair or Replacement (Aortic, Mitral, Tricuspid, and Pulmonary) more than 79% of his peers

Dr. Grehan performs this procedure more than 79% of his peers

Rating Includes other areas of care:

  • Aortic Valve Repair
  • Aortic Valve Replacement
  • Aortic Valvuloplasty
  • Heart Valve Replacement
  • Mitral Valve Repair
  • Mitral Valve Replacement
  • Percutaneous Balloon Valvuloplasty
  • Transcatheter Mitral Valve Repair
  • Transcatheter Mitral Valve Replacement
  • Tricuspid Valve Repair / Replacement
  • Valvuloplasty
Hide other areas of care
Mitral Valve Surgery
normal
normal

Treatment Frequency

Dr. Grehan performs Mitral Valve Surgery more than 73% of his peers

Dr. Grehan performs this procedure more than 73% of his peers

Rating Includes other areas of care:

  • Mitral Valve Repair
  • Mitral Valve Replacement
  • Transcatheter Mitral Valve Repair
  • Transcatheter Mitral Valve Replacement
Aortic Valve Surgery
normal
normal

Treatment Frequency

Dr. Grehan performs Aortic Valve Surgery more than 67% of his peers

Dr. Grehan performs this procedure more than 67% of his peers

Dr. Grehan's conditions and procedures:

  • Ablation for Treatment of Cardiac Arrhythmias
  • Abscess or Cyst Drainage or Aspiration
  • Aneurysm
  • Angina and Acute Coronary Syndrome
  • Aortic Aneurysm
  • Aortic Dissection
  • Aortic Repair, Open or Repair of Arterial Aneurysm, Open
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Aortic Valve Surgery
  • Atrial Fibrillation
  • Atrial Septal Defect
  • Cardiac Tamponade
  • Congenital Aortic Valve Disorders
  • Congenital Heart Defects
  • Coronary Artery Disease (CAD)
  • Empyema
  • Endocarditis
  • Esophageal Fistula
  • Heart Defect Repair
  • Heart Tumors, Benign
  • Insertion of Epicardial Lead for Pacemaker or Cardioverter and-or Defibrillator
  • Insertion of Left Ventricular Lead for Pacemaker or Cardioverter and-or Defibrillator
  • Lung Cancer
  • Maze Procedure
  • Mediastinal Tumors, Not Specified as Malignant
  • Mitral Valve Disease
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Mitral Valve Surgery
  • Neuroendocrine Tumors
  • Patent Foramen Ovale (PFO)
  • Pericardial Disease
  • Port Placements or Replacements
  • Pulmonary Embolism
  • Puncture Aspiration
  • Resection of Cardiac Tumor
  • Rheumatic Aortic Valve Disorders
  • Ruptured Aortic Aneurysm
  • Septal Defect
  • Septic Embolism
  • Thoracentesis
  • Thoracoabdominal Aortic Aneurysm
  • Tilt Testing or Cardiac Event Monitors
  • Transcatheter Aortic Valve Replacement (TAVR)
  • Tricuspid Valve Surgery
  • Valve Repair or Replacement (Aortic, Mitral, Tricuspid, and Pulmonary)
  • Ventricular Fibrillation
  • Ventricular Septal Defect

About Me

Biography

Dr. John Grehan, MD is a cardiothoracic surgery specialist in Saint Paul, MN and has been practicing for 16 years. He graduated from University of Minnesota...Read more

Specialties

  • Cardiothoracic Surgery

Board Certifications

  • Cardiovascular Surgery
  • General Surgery
  • Thoracic Cardiovascular Surgery
  • Thoracic Surgery

Education

2006
University Michigan Health System
Fellowship Hospital
2004
Fairview University Med Center
Residency Hospital
1996
Fairview University Medical Center
Internship Hospital
1995
University of Minnesota Medical School
Medical School
1991
University of Minnesota / Twin Cities Campus
Undergraduate School
,

Awards

  • Healthgrades Honor Roll
  • Hospital Outstanding Patient Experience (H.O.P.E.) Award-AllinaHealth, June 2011
  • Americas Top Surgeons-Consumers' Research Council of America, 2012
  • Hospital Outstanding Patient Experience (H.O.P.E.) Award-AllinaHealth, April 2012

Frequently Asked Questions

Is Dr. John Grehan, MD accepting new patients?

Dr. John Grehan, MD generally accepts new patients on Healthgrades. You can see Dr. Grehan's profile to make an appointment.

Does Dr. John Grehan, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Grehan accepts your insurance.

What are Dr. John Grehan, MD's top areas of care?

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

Where is Dr. John Grehan, MD's office located?

Dr. Grehan's office is located at 225 Smith Ave N Ste 400, Saint Paul, MN 55102. Find other locations and directions on Healthgrades.

Does Dr. John Grehan, MD offer telehealth services?

Dr. Grehan has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

How can I make an appointment with Dr. John Grehan, MD?

Find contact information here to make an appointment.

Dr. Grehan's Reviews

Likelihood to recommend Dr. Grehan

4.9

Based on 83 ratings

5 Stars
95.18072289156626%
(79)
4 Stars
1.2048192771084338%
(1)
3 Stars
0%
(0)
2 Stars
1.2048192771084338%
(1)
1 Star
2.4096385542168677%
(2)
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Dr. Grehan
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RecentHighestLowestMost Helpful
Reply
Dr Grehan is an excellent surgeon, very knowledgeable and has a great bedside manner. He always answers any questions you have. He did my mitral valve repair and one bypass. He told me everything up front and took the time to figure out exactly what I needed and when. He made me stay one day longer in the hospital which wasn't received well at the time but it was the best thing for me and sped up my recovery. He really knows hearts. My wife is so happy because I will live a lot longer due to Dr Grehan's skill and knowledge.
What went well
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Michael Ferguson – Oct 27, 2021
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Reply
Dr. Grehan did an outstanding job and he provided me with a World Class experience! I would not be writing this today if I had not been treated by him! Also his Physician Assistants Natasha and Natara were amazing and they we so kind and informative. I cannot see either one of them without crying because I am so grateful for how I was treated by them!!
What went well
  • Staff friendliness
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Bernie Doll – Sep 02, 2021
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Reply
Dr. Grehan and his staff did a great job. I am recovering and feeling good! They have my recommendation.
What went well
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
What could be improved
No results
Helpful
Mark Maxwell – Jul 13, 2021
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Reply
I first met Dr. Grehan after my cardiologist told me that my aortic root and valve were at a high risk of failure. Dr. Grehan clearly explained the procedure and how United hospital cared for cardiac patients. He is a confident surgeon who is a great reassurance to his patients. His team is excellent. He did a great job on the surgery and I always was sure that he was the right choice for this surgery.
What went well
  • Appointment scheduling
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Helpful
On the Button – Jun 13, 2021
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Reply
Dr. Grehan and and his team did an amazing job repairing my Mitral valve. Would Highly recommend for heart surgery. All my appointments were scheduled by his team very quickly after the consultation.
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
Helpful
Bob – Mar 05, 2021
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Reply
After 6 years of monitoring my mitral valve prolapse/regurgitation my cardiologist informed me that it was time to take action and repair it to avoid future complications. He recommended Dr. Grehan as the best one to do the job. I'm glad I listened to him and agreed to have Dr. Grehan as my surgeon to repair my mitral valve. I had open heart surgery and Dr. Grehan not only repaired my mitral valve but also my tricuspid valve that was starting to deteriorate as well. Recovery went so well and I feel like I have a brand new heart.
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
1 person found this helpful
Helpful
Suzy N. – Feb 12, 2021
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Reply
Sixtuplet heart surgery, FANTASTIC surgeon. Owe him my life
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
No results
1 person found this helpful
Helpful
Marvin Broin – May 13, 2020
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Reply
Dr. Grehan is an excellent surgeon who performed quintuple heart bypass surgery on me the end of December, 2019. Even with the added challenge of Parkinson's I did well and and am recovering nicely. The entire staff was very caring and professional as well. Dr. Grehan used some of the best quality instruments for the surgery, which was a bonus! ?? G.K.
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
1 person found this helpful
Helpful
G. K. in Oakdale, MN – Feb 21, 2020
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Reply
I was amazed at what these people can do with the heart Dr Grehan and his staff were great would recommend to anyone
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
2 people found this helpful
Helpful
Don sherry – Oct 31, 2019
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Reply
Dr. Grehan and my entire health care provider team did an excellent job in replacing my Aortic Valve and coronary artery bypass grafting surgery in late April 2019 under very difficult and time consuming second time around open heart surgery conditions. He was confident in our pre-surgery consultation meeting that he could fix my heart issues and he did exactly that. I would trust his judgement in all areas of his stated expertise.
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
1 person found this helpful
Helpful
Keith in St Paul, – Jun 23, 2019
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Reply
Dr. Grehan was very good in answering my questions and addressing my concerns before and after my heart valve repair. I have found Dr. Grehan and his staff at United Heart and Vascular Clinic to be caring, thorough and professional.
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
1 person found this helpful
Helpful
Roger C in St. Paul, MN – Jun 11, 2019
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Reply
Excellent Surgeon!!!
Helpful
May 30, 2019
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Reply
Very good at what he does. Not as personable as some but someone I would. Trust in a critical situation. 100 percent trust in his competence. I liked the straight forward . Better with patients than family.
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
Helpful
Hager city – Jan 22, 2019
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Reply
I'm not sure why everyone was like go to Mayo or the Cleveland Clinic because I'm so glad I stayed in town and went to Dr. Grehan. He was outstanding. In fact, I can't say enough great things about Dr. Grehan and his staff. Everybody was really excellent. And that was another big part...the Physician Assistants/ Nurses/Nursing Assistants who work with Dr. Grehan. Everyone seemed on their game...Sonja Harlane was in particular oustanding...when I was in the hospital/in for office visit.
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
3 people found this helpful
Helpful
Jarrod Davis in St. Paul, MN – Jan 10, 2019
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Reply
Very helpful in explaining options and reasons for his recommendations.
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
Helpful
Dave Schmitt in Hastings, MN – Nov 09, 2018
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Reply
When my cardiologist informed me I would need mitral valve repair, he quickly recommended Dr. Grehan. My experience with Dr. Grehan and his staff has been very positive. Most importantly my valve was repaired, and while I continue to heal, it appears I am well on my way to full recovery and good valve function.
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
Helpful
John B in White Bear Lake, MN – Oct 11, 2018
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Reply
I had a great experience with the whole team. I did some research regarding Dr. Grenada and found he had excellent credentials.
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
Helpful
Jerry Willenbrin in Hastings, MN – Sep 01, 2018
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Reply
My husband had an aortic valve replacement and also atrial maze surgery on June 13, 2018. He is an excellent surgeon, answered all our questions and explained everything thoroughly. He and his staff were very helpful and available whenever we had any questions. Would highly 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
Helpful
Steve Lentsch in Vadnais Heights, MN – Jul 17, 2018
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Reply
When I was aware that I needed to plan my aortic valve replacement surgery my cardiologists doctor Rusterholz never hesitated one minute recommending dr. John Grehan. All the Care by dr. Grehan and his staff was excellent. I would recommend doctor Grehanto any one of my friends or family if they needed heart surgery. Much thanks to dr. Grehan and his staff for all the excellent care I received
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
Helpful
ELLA WILSEY in Saint Paul – Mar 29, 2018
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Reply
I would recommend Dr Grehan to any and all family members and friends. He was very professional and exuded confidence. He explained the procedures he planned to perform and what to expect. As a result of his knowledge and skill I am now on the road to a full recovery and feeling better each day. Thank You Dr Grehan
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
Helpful
John Grape in St Paul, MN – Mar 22, 2018
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Locations

Practice

St Paul Heart Clinic225 Smith Ave N Ste 400 Saint Paul, MN 55102
1

Affiliated Hospitals

Dr. Grehan is affiliated with the following hospital. Select the hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

United Hospital

Saint Paul, MN

74% Patient experience rating, 5% higher than the national average

19 Awards Received