Overview
Dr. John Grehan specializes in Cardiovascular & Thoracic surgery. The conditions he treats include: Speaks: English.
Dr. Grehan is highly rated in 5 conditions, according to our data. His clinical expertise encompasses Thoracic Aortic Aneurysm, Necrosis, Arterial Embolism, Coronary Artery Bypass Graft (CABG), and Heart Valve Repair.
Dr. Grehan is board certified in American Board Of Thoracic SurgeryAmerican Board Of Surgery: General Surgery. He is actively involved in clinical research, co-authoring 6 peer reviewed articles and participating in 2 clinical trials. Dr. Grehan is currently accepting new patients.
Specialties
Licenses
Board Certifications
Hospital Affiliations
Languages Spoken
Gender
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
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
Avera McKennan Hospital & University Health Center
Dr. Murphy is a general surgeon at Surgical Institute of South Dakota. Dr. Murphy is highly rated in 21 conditions, according to our data. Her clinical expertise encompasses Hyperparathyroidism, Parathyroid Adenoma, Parathyroid Cancer, Thyroidectomy, and Gastrostomy. Dr. Murphy is currently accepting new patients.
Sanford Surgical Associates
Dr. Sorrell specializes in surgery and trauma. The services that provides include: Speaks: English. Dr. Sorrell is highly rated in 25 conditions, according to our data. His clinical expertise encompasses Hernia, Ogilvie Syndrome, Familial Colorectal Cancer, Gallbladder Removal, and Hernia Surgery. Dr. Sorrell is board certified in American Board Of Surgery: General SurgeryAmerican Board Of Surgery: Surgical Critical Care. Dr. Sorrell is currently accepting new patients.
Avera Medical Group Comprehensive Breast Care — Prairie Center
Tricia Merrigan, MD, FACS, provides women with innovative and effective breast cancer surgery options at Avera Medical Group Comprehensive Breast Care. Dr. Merrigan is highly rated in 12 conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Angiosarcoma, Paget Disease of the Breast, Inflammatory Breast Cancer, and Lymphadenectomy. Dr. Merrigan is board certified in American Board Of Surgery. Dr. Merrigan is currently accepting new patients.
Frequently Asked Questions about Dr. John F. Grehan
How do I make an appointment with Dr. John F. Grehan?
You can book an appointment with Dr. John F. Grehan by calling their office at 605-312-2100. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. John F. Grehan a top-rated expert for Coronary Artery Bypass Graft (CABG)?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. John F. Grehan is classified as an Advanced expert for Coronary Artery Bypass Graft (CABG), meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. John F. Grehan specialize in?
While Dr. John F. Grehan is a General Surgery, they have specific expertise in Coronary Artery Bypass Graft (CABG), Heart Valve Repair, and Heart Bypass Surgery. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within General Surgery.
Does Dr. John F. Grehan participate in research or clinical trials?
Yes. Dr. John F. Grehan has published 6 articles and abstracts on conditions like Coronary Artery Bypass Graft (CABG). You can view a list of Dr. John F. Grehan's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.
Does Dr. John F. Grehan accept my insurance?
Dr. John F. Grehan accepts most major insurance plans, including Health Care Services Corporation and Humana. We recommend calling the office directly at 605-312-2100 to verify that your specific plan is currently accepted before your visit.
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.
- 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.
- Arterial EmbolismDr. Grehan isExperienced. Learn about Arterial Embolism.
- Cystic Medial Necrosis of AortaDr. Grehan isExperienced. Learn about Cystic Medial Necrosis of Aorta.
- GastrostomyDr. Grehan isExperienced. Learn about Gastrostomy.
- NecrosisDr. Grehan isExperienced. Learn about Necrosis.
- Pacemaker ImplantationDr. Grehan isExperienced. Learn about Pacemaker Implantation.
- Patent Foramen Ovale RepairDr. Grehan isExperienced. Learn about Patent Foramen Ovale Repair.
- Peptic UlcerDr. Grehan isExperienced. Learn about Peptic Ulcer.
- Thoracic Aortic AneurysmDr. Grehan isExperienced. Learn about Thoracic Aortic Aneurysm.