Overview
John Grehan is a Thoracic Surgeon in Sioux Falls, South Dakota. Dr. Grehan is highly rated in 6 conditions, according to our data. His top areas of expertise are Aortic Valve Stenosis, Bicuspid Aortic Valve, Aortic Regurgitation, Coronary Artery Bypass Graft (CABG), and Heart Valve Repair.
His clinical research consists of co-authoring 6 peer reviewed articles and participating in 2 clinical trials. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- HMO
- PPO
- OTHER MEDICAID
- STATE MEDICAID
- HMO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- HMO
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- POS
Locations
1301 W 18th St, Sioux Falls, SD 57105
225 Smith Ave N Ste 400, Saint Paul, MN 55102
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
2 Clinical Trials
Heart Hospital Of South Dakota LLC
Tommy Reynolds is a Thoracic Surgeon in Sioux Falls, South Dakota. Dr. Reynolds is highly rated in 6 conditions, according to our data. His top areas of expertise are Carotid Artery Disease, Arterial Embolism, Abdominal Aortic Aneurysm (AAA), Carotid Artery Surgery, and Heart Bypass Surgery.
Avera Mckennan
Christopher Erickson is a Pediatric Cardiologist and a Pediatrics provider in Sioux Falls, South Dakota. Dr. Erickson is highly rated in 4 conditions, according to our data. His top areas of expertise are Wolff-Parkinson-White Syndrome, Hypertrophic Cardiomyopathy (HCM), Cardiomyopathy, Thrombectomy, and Cardiac Ablation.
Sanford Clinic
Keung Ung is a Thoracic Surgeon in Sioux Falls, South Dakota. Dr. Ung is highly rated in 6 conditions, according to our data. His top areas of expertise are Aortic Valve Stenosis, Aortic Regurgitation, Rheumatic Fever, Heart Bypass Surgery, and Heart Valve Repair.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Advanced
- Aortic Valve ReplacementDr. Grehan isAdvanced. Learn about Aortic Valve Replacement.
- Aortic Valve StenosisDr. Grehan isAdvanced. Learn about Aortic Valve Stenosis.
- Coronary Artery Bypass Graft (CABG)
- Heart Bypass SurgeryDr. Grehan isAdvanced. Learn about Heart Bypass Surgery.
- Heart Valve RepairDr. Grehan isAdvanced. Learn about Heart Valve Repair.
- Transcatheter Aortic Valve Replacement (TAVR)
- Experienced
- Aortic DissectionDr. Grehan isExperienced. Learn about Aortic Dissection.
- Aortic RegurgitationDr. Grehan isExperienced. Learn about Aortic Regurgitation.
- Arterial EmbolismDr. Grehan isExperienced. Learn about Arterial Embolism.
- Bicuspid Aortic ValveDr. Grehan isExperienced. Learn about Bicuspid Aortic Valve.
- Cystic Medial Necrosis of AortaDr. Grehan isExperienced. Learn about Cystic Medial Necrosis of Aorta.
- GastrostomyDr. Grehan isExperienced. Learn about Gastrostomy.