4.2
10 Ratings with 2 written Reviews
Summary
Dr. John Grehan is a thoracic and cardiovascular surgeon who graduated from the University of Minnesota Medical School. With 31 years of experience in surgery, he specializes in complex heart and chest procedures that require advanced surgical expertise. Dr. Grehan is fluent in English and brings over three decades of surgical knowledge to his practice.
Dr. Grehan is affiliated with Allina Health United Hospital Hastings Regina Campus and practices at the Sanford Cardiac, Thoracic & Vascular Surgery Clinic in Sioux Falls, South Dakota. He treats patients with coronary artery disease and heart muscle problems caused by reduced blood flow. His surgical expertise includes cardiovascular and thoracic procedures that help restore heart function and improve patient outcomes. Patients have given him an average rating of 4.2 out of 5 stars.
Dr. Grehan is affiliated with Allina Health United Hospital Hastings Regina Campus and practices at the Sanford Cardiac, Thoracic & Vascular Surgery Clinic in Sioux Falls, South Dakota. He treats patients with coronary artery disease and heart muscle problems caused by reduced blood flow. His surgical expertise includes cardiovascular and thoracic procedures that help restore heart function and improve patient outcomes. Patients have given him an average rating of 4.2 out of 5 stars.
Overview based on verified provider data
Quick Facts
- 31 years of experience
- 13 insurance plans accepted
- speaks English
- University Of Minnesota Medical School
- 2 written reviews
- 3 specialties
- 7 areas of expertise
- 1 hospital affiliation
- 1 office location
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Location
Sanford Cardiac, Thoracic & Vascular Surgery Clinic
1301 W 18th StSioux Falls, SD 57105 Tel: (605) 312-2100
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
Compare with Similar Doctors
 |  |  |  |
| John Grehan, MD | Dr. Verlyn Jon Nykamp | Dr. Octavio E. Pajaro | Thekla Bacharach, MD |
| Thoracic Surgery | Cardiovascular Disease | Thoracic Surgery | Vascular Surgery |
| Accepts New Patients | |||
| 31 Years of Experience | 36 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 | Speaks English, German | |
| Sioux Falls , SD | Sioux Falls , SD | Phoenix , AZ | Sioux Falls , SD |
| Med School: University Of Minnesota Medical School | Med School: University Of Minnesota Medical School | Med School: Albert Einstein College Of Medicine Of Yeshiva University | Med School: University Of Queensland School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by John Grehan
Medical Specialties
John Grehan has the following 3 specialties
Specialty Expertise
John Grehan has the following 7 areas of expertise
Certifications, License, & Education
31 Years Experience
John Grehan holds an active medical license in the states of Minnesota and South Dakota.
Medical License
Medical Doctor with an active medical license in the state of Minnesota that expires in 2026 and an active medical license in the state of South Dakota that expires in 2027.
Education & Training
Medical School
Graduated from University Of Minnesota Medical School in 1995.
NPI Number
John Grehan's NPI number is 1275549784.
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Frequently Asked Questions
- Which hospitals is John Grehan affiliated with?
- John Grehan is affiliated with Allina Health United Hospital Hastings Regina Campus.
- Does John Grehan accept my insurance?
- You can see the insurance plans that John Grehan accepts on their Vitals profile.
- How can I make an appointment with John Grehan?
- You can find contact information for John Grehan here on Vitals.
- Does John Grehan accept virtual/telehealth appointments?
- John Grehan has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- What languages does John Grehan speak?
- John Grehan speaks English.
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