Overview
John Ko is a Cardiologist and an Interventional Cardiologist in Sacramento, California. Dr. Ko is rated as an Advanced provider by MediFind in the treatment of Heart Attack. His top areas of expertise are Heart Attack, Apoplexy, Arterial Embolism, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR). Dr. Ko is currently accepting new patients.
His clinical research consists of co-authoring 1 peer reviewed article. 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
- PPO
Locations
2025 Morse Avenue, Sacramento, CA 95825
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.
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George Fehrenbacher is an Interventional Cardiologist in Roseville, California. Dr. Fehrenbacher has been practicing medicine for over 44 years and is rated as a Distinguished provider by MediFind in the treatment of Heart Attack. His top areas of expertise are Heart Attack, Apoplexy, Arterial Embolism, Pacemaker Implantation, and Angioplasty. Dr. Fehrenbacher is currently accepting new patients.
Dignity Health Mercy Medical Group
Walt Marquardt is an Interventional Cardiologist in Sacramento, California. Dr. Marquardt is rated as a Distinguished provider by MediFind in the treatment of Heart Attack. His top areas of expertise are Heart Attack, Apoplexy, Angina, Coronary Artery Bypass Graft (CABG), and Heart Bypass Surgery.
Office
Ezra Amsterdam is a Cardiologist in Sacramento,, California. Dr. Amsterdam is rated as a Distinguished provider by MediFind in the treatment of Heart Attack. His top areas of expertise are Heart Attack, Inappropriate Sinus Tachycardia (IST), Familial Ventricular Tachycardia, Heart Bypass Surgery, and Cardiac Ablation.
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
- ApoplexyDr. Ko isAdvanced. Learn about Apoplexy.
- Heart AttackDr. Ko isAdvanced. Learn about Heart Attack.
- Experienced
- AnginaDr. Ko isExperienced. Learn about Angina.
- Aortic Valve ReplacementDr. Ko isExperienced. Learn about Aortic Valve Replacement.
- Aortic Valve StenosisDr. Ko isExperienced. Learn about Aortic Valve Stenosis.
- Arterial EmbolismDr. Ko isExperienced. Learn about Arterial Embolism.
- AtherosclerosisDr. Ko isExperienced. Learn about Atherosclerosis.
- Cardiac ArrestDr. Ko isExperienced. Learn about Cardiac Arrest.