Overview
John Heiser is a Thoracic Surgeon in Grand Rapids, Michigan. Dr. Heiser is rated as an Elite provider by MediFind in the treatment of Aortic Valve Stenosis. His top areas of expertise are Aortic Valve Stenosis, Mitral Valve Regurgitation, Aortic Regurgitation, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).
His clinical research consists of co-authoring 33 peer reviewed articles and participating in 6 clinical trials. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 22 articles and participated in 5 clinical trials in the study of Aortic Valve Stenosis.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- HMO
- INDEMNITY
- POS
- PPO
Locations
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.
6 Clinical Trials
Corewell Health Cardiothoracic Surgery - 221 Michigan St NE
Stephane Sang is a Thoracic Surgeon in Grand Rapids, Michigan. Dr. Sang has been practicing medicine for over 17 years and is rated as a Distinguished provider by MediFind in the treatment of Aortic Valve Stenosis. His top areas of expertise are Aortic Valve Stenosis, Aortic Dissection, Cystic Medial Necrosis of Aorta, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement. Dr. Sang is currently accepting new patients.
Corewell Health Cardiothoracic Surgery - 221 Michigan St NE
Justin Fanning is a Thoracic Surgeon in Grand Rapids, Michigan. Dr. Fanning has been practicing medicine for over 26 years and is rated as an Advanced provider by MediFind in the treatment of Aortic Valve Stenosis. His top areas of expertise are Aortic Valve Stenosis, Thoracic Aortic Aneurysm, Cystic Medial Necrosis of Aorta, Heart Bypass Surgery, and Aortic Valve Replacement. Dr. Fanning is currently accepting new patients.
Corewell Health Cardiothoracic Surgery - 221 Michigan St NE
David Ranney is a Thoracic Surgeon in Grand Rapids, Michigan. Dr. Ranney has been practicing medicine for over 12 years and is rated as an Advanced provider by MediFind in the treatment of Aortic Valve Stenosis. His top areas of expertise are Aortic Valve Stenosis, Heart Failure with Preserved Ejection Fraction (HFpEF), Congenital Aneurysms of the Great Vessels, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement. Dr. Ranney is currently accepting new patients.
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
- Elite
- Aortic Valve ReplacementDr. Heiser isElite. Learn about Aortic Valve Replacement.
- Aortic Valve StenosisDr. Heiser isElite. Learn about Aortic Valve Stenosis.
- Distinguished
- Mitral Valve RegurgitationDr. Heiser isDistinguished. Learn about Mitral Valve Regurgitation.
- Transcatheter Aortic Valve Replacement (TAVR)
- Advanced
- Aortic RegurgitationDr. Heiser isAdvanced. Learn about Aortic Regurgitation.
- Heart Valve RepairDr. Heiser isAdvanced. Learn about Heart Valve Repair.
- Experienced
- Aortic DissectionDr. Heiser isExperienced. Learn about Aortic Dissection.
- Bicuspid Aortic ValveDr. Heiser isExperienced. Learn about Bicuspid Aortic Valve.
- Cystic Medial Necrosis of AortaDr. Heiser isExperienced. Learn about Cystic Medial Necrosis of Aorta.
- Pacemaker ImplantationDr. Heiser isExperienced. Learn about Pacemaker Implantation.
- Rheumatic FeverDr. Heiser isExperienced. Learn about Rheumatic Fever.


