
Overview
James Loker is a Pediatric Cardiologist in Grand Rapids,, Michigan. Dr. Loker has been practicing medicine for over 40 years and is rated as an Experienced provider by MediFind in the treatment of Caudal Duplication. His top areas of expertise are Heart Murmurs, Ventricular Septal Defects, Pulmonary Vein Stenosis, and Idiopathic Dilatation of the Pulmonary Artery.
His clinical research consists of co-authoring 6 peer reviewed articles. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- 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
- HMO
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- HMO
- POS
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
25 Michigan St NE Ste 4200, Grand Rapids,, MI 49503
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.
Office
Gruschen Veldtman is a Pediatric Cardiologist in Grand Rapids, Michigan. Dr. Veldtman has been practicing medicine for over 35 years and is rated as a Distinguished provider by MediFind in the treatment of Caudal Duplication. His top areas of expertise are Congenital Heart Disease (CHD), Tricuspid Atresia, Double Inlet Left Ventricle, Heart Transplant, and Stent Placement.
Helen Devos Children's Hospital Congenital Heart Center Cvts-Grand Rapids
Christopher Ratnasamy is a Pediatric Cardiologist in Grand Rapids,, Michigan. Dr. Ratnasamy has been practicing medicine for over 31 years and is rated as an Advanced provider by MediFind in the treatment of Caudal Duplication. His top areas of expertise are Congenital Heart Block, Brugada Syndrome, Postural Orthostatic Tachycardia Syndrome (POTS), and Short QT Syndrome.
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
- Bicuspid Aortic ValveDr. Loker isAdvanced. Learn about Bicuspid Aortic Valve.
- Heart MurmursDr. Loker isAdvanced. Learn about Heart Murmurs.
- Idiopathic Dilatation of the Pulmonary Artery
- Pulmonary Vein StenosisDr. Loker isAdvanced. Learn about Pulmonary Vein Stenosis.
- Ventricular Septal DefectsDr. Loker isAdvanced. Learn about Ventricular Septal Defects.
- Experienced
- Aase SyndromeDr. Loker isExperienced. Learn about Aase Syndrome.
- Aberrant Subclavian ArteryDr. Loker isExperienced. Learn about Aberrant Subclavian Artery.
- Abruzzo-Erickson SyndromeDr. Loker isExperienced. Learn about Abruzzo-Erickson Syndrome.
- Acrodermatitis EnteropathicaDr. Loker isExperienced. Learn about Acrodermatitis Enteropathica.
- Acrorenal Mandibular SyndromeDr. Loker isExperienced. Learn about Acrorenal Mandibular Syndrome.
- Adenosine Deaminase 2 DeficiencyDr. Loker isExperienced. Learn about Adenosine Deaminase 2 Deficiency.

