Mercy Medical Group

Mercy Medical Plaza - Cardiology

Cardiology, Interventional Cardiology · 7 Providers

Average Rating of all Office Providers

Mercy Medical Group

3941 J St Ste 260
Sacramento, CA 95819
View All Locations(916) 736-2323

Office Providers

Dr. Joseph Kozina, MD

Dr. Joseph Kozina, MD

Interventional Cardiology

Dr. Walt Marquardt, MD

Dr. Walt Marquardt, MD

Interventional Cardiology


Office Provider Reviews


based on the average of 129 provider reviews for Mercy Medical Group

Review of Dr. Kozina


While I adore Dr. Kozina and would give him 5+ stars, his staff is awful. They are difficult to get hold of, terrible at returning calls, and make scheduling appointments difficult.
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Review of Dr. Marquardt

- |

Dr. Marquardt is the best. He takes time to explain everything and show interest in your needs. His support and care to my husband has been outstanding. We are so thankful to have him as our doctor….
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Review of Dr. Marquardt

-Sacramento, CA |

Dr Marquardt is a phenomenal doctor. He's got knowledge, experience and heart. He is an exceptional cardiologist. Respected highly by his patients and staff. He saved my father's life and I trust him implicitly!!! I highly recommend him. No words can express my enormous gratitude and admiration for him.
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Review of Dr. Marquardt

- in Sacramento |

Dr Marquardt is a phenomenal surgeon and has great bedside manner. My husband had a heart attack and he placed a stent, provided all after care and was his doctor for 2 years following until our insurance coverage changed. He spends a long time with patients, explains things thoroughly and in terms that are understandable to the layman. Dr Marquardt is the only surgeon I would choose for a life threatening heart procedure.
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Review of Dr. Kozina

-CO, CA |

Welcoming,knowledgeable and skillful. One of the best.
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Review of Dr. Kozina


Dr Kozina. Always listens and answers all question ask of him. I feel very confident I have the Best health care with Dr Kozina.
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Review of Dr. Singh

-Sacramento |

Dr. Singh was excellent. He answered all my questions and explained everything very well. At every visit he spent as much time with me as I needed and I never felt rushed. He was honest about the seriousness of my situation and the risks of my treatment options, but encouraging and optimistic as well. Ultimately, my treatment was very successful. I highly recommend Dr. Singh.
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Review of Dr. Marquardt

- in Grass Valley , CA |

A great Doctor, also friendly and communicative. After my heart attack of last December, and a Code 3 Ambulance ride from Grass Valley to Mercy General, he put in 3 stents. I am doing great. He is highly respected by the Hospital staff people. Also, Sierra Nevada Memorial Hospital and Mercy General are excellent! (I have had 5 surgeries at these hospitals)
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Review of Dr. Bhaskar


Dr. Bhaskar performed a stress test on me. I informed him, and the nurse, that I had a respiratory condition. He didn't listen to me. While the nurse told me the treadmill would go "1 mile and hour like pushing a shopping cart", he started the treadmill much faster. Once the drug to dilate the arteries was in my body, I experienced extreme respiratory distress, after about 90 seconds, I said, "I feel terrible, stop this." When I sat down my oxygen saturation was 74, very dangerous. .
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Review of Dr. Singh

- in Dallas, TX |

Terrible doctor... extremely unapproachable and rude, could not figure out heart pause in my mom, could not figure out her heart valve leak, did not listen to heart surgeon’s advice to install pacemaker for my mom. Eventually she died because of his negligence. Please do not use his services just for the sake of convenience... your life or that of a loved one is not worth it. I would give 0 stars if possible!
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Learn About Mercy Medical Group

54 Procedures

  • Ablation For Treatment Of Cardiac Arrhythmias
  • Angiography
  • Angioplasty
  • Angioplasty With Stent Placement
  • Aortic Valve Surgery
  • Automatic Implantable Cardioverter Defibrillator (Icd) Implantation
  • Cardiac Angiography
  • Cardiac Catheterization (Incl. Coronary Angiography)
  • Cardiac Electrophysiology
  • Cardiac Imaging
  • Cardiac Mri (Magnetic Resonance Imaging) Of Heart Or Chest
  • Cardiac Myocardial Perfusion Imaging
  • Cardiac Procedure
  • Cardiovascular Intervention
  • Cardiovascular Stress Test
  • Cardioversion
  • Cardioversion, Elective
  • Cardioverter-Defibrillator Or Pacemaker Insertion, Removal Or Repair
  • Carotid Artery Stent Placement
  • Carotid Ultrasound
  • Chest Ct (Incl. Heart And Lungs)
  • Coronary Angiogram
  • Coronary Angioplasty, Atherectomy And Stent
  • Coronary Cathertization With Robotic Assistance
  • Coronary Interventional Procedures
  • Diagnostic Cardiac Catheterization
  • Echocardiography
  • Electrocardiogram (Ekg)
  • Impella Device
  • Insertion Of Epicardial Lead For Pacemaker Or Cardioverter And-Or Defibrillator
  • Insertion Of Left Ventricular Lead For Pacemaker Or Cardioverter And-Or Defibrillator
  • Mitral Valve Surgery
  • Non-Coronary Angioplasty, Atherectomy, And Stenting
  • Nuclear Stress Testing
  • Pacemaker Implantation, Permanent
  • Pacemaker Insertion Or Replacement
  • Peripheral Artery Catheterization
  • Peripheral Vascular Intervention
  • Pulmonary Valve Surgery
  • Radiofrequency Ablation
  • Removal Or Revision Of Pacemaker Or Cardioverter And-Or Defibrillator
  • Stress Echocardiogram
  • Structural Heart Disease Evaluations And Treatment
  • Thoracentesis
  • Thrombolysis
  • Tilt Testing Or Cardiac Event Monitors
  • Transcatheter Aortic Valve Replacement (Tavr)
  • Transcatheter Mitral Valve Repair
  • Transesophageal Echocardiography (Tee)
  • Tricuspid Valve Surgery
  • Valve Repair Or Replacement (Aortic, Mitral, Tricuspid, And Pulmonary)
  • Vascular Duplex Ultrasonography And Plethysmography
  • Vascular Surgical Procedure
  • Ventricular Assist Device


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Who We Are

  • A service of Dignity Health Medical Foundation

Language Services

  • Hindi
  • Punjabi
  • Pushto
  • Urdu

Mercy Medical Group accepts 18 insurance carriers

  • Aetna
  • Anthem Blue Cross
  • Blue Shield of California
  • Centene
  • ChoiceCare Network
  • Cigna
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • Health Net
  • HealthSmart - Interplan Health Group
  • Molina Healthcare
  • MultiPlan
  • Networks By Design
  • Pacific Foundation for Medical Care
  • Tricare
  • UnitedHealthCare
  • Value Options
  • Western Health Advantage


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