Dr. Walt Marquardt, MD is an interventional cardiology specialist in Grass Valley, CA and has been practicing for 31 years. He specializes in interventional cardiology and cardiology.


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Dr. Marquardt accepts

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(916) 343-8538

Dr. Marquardt accepts the following insurance:

Aetna
Anthem Blue Cross
Blue Shield of California
ChoiceCare Network
Cigna
Coventry Health Care
Health Net
HealthSmart - Interplan Health Group
Interplan Health Group
MultiPlan
Networks By Design
Pacific Foundation for Medical Care
Tricare
UnitedHealthCare
United Healthcare
Western Health Advantage

Background Check

No malpractice claims found for California
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check Dr. Marquardt's experience treating your condition or procedure

Dr. Marquardt's Top Procedures and Conditions

Treatment Frequency
Heart Attack (Acute Myocardial Infarction)
very high
very high

Treatment Frequency

Dr. Marquardt treats Heart Attack (Acute Myocardial Infarction) more than 100% of his peers

Dr. Marquardt treats this condition more than 100% of his peers

Cardiac Catheterization (incl. Coronary Angiography)
very high
very high

Treatment Frequency

Dr. Marquardt performs Cardiac Catheterization (incl. Coronary Angiography) more than 100% of his peers

Dr. Marquardt performs this procedure more than 100% of his peers

Coronary Artery Disease (CAD)
very high
very high

Treatment Frequency

Dr. Marquardt treats Coronary Artery Disease (CAD) more than 99% of his peers

Dr. Marquardt treats this condition more than 99% of his peers

Rating Includes other areas of care:

  • Coronary Artery Calcification
  • Coronary Artery Disease, Autosomal Dominant 1
  • Coronary Artery Disease, Autosomal Dominant 2

Dr. Marquardt's conditions and procedures:

  • Ablation for Treatment of Cardiac Arrhythmias
  • Aneurysm
  • Aneurysm of Heart
  • Angina and Acute Coronary Syndrome
  • Aortic Aneurysm
  • Aortic Dissection
  • Aortic Ectasia
  • Aortic Embolism and Thrombosis
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Aortic Valve Surgery
  • Arrhythmias
  • Atrial Fibrillation
  • Atrial Flutter
  • Automatic Implantable Cardioverter Defibrillator (ICD) Implantation
  • Autonomic Disorders
  • Benign Tumor
  • Cardiac Catheterization (incl. Coronary Angiography)
  • Cardiac Electrophysiology
  • Cardiac Imaging
  • Cardiac Myocardial Perfusion Imaging
  • Cardiac Procedure
  • Cardiomegaly
  • Cardiomyopathy
  • Cardiovascular Disease
  • Cardiovascular Intervention
  • Cardiovascular Stress Test
  • Cardioversion, Elective
  • Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
  • Carotid Artery Disease
  • Carotid Artery Stent Placement
  • Chest CT (incl. Heart and Lungs)
  • Chest Pain
  • Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
  • Congenital Aortic Valve Disorders
  • Congenital Heart Defects
  • Congenital Heart Disease
  • Congestive Heart Failure
  • Coronary Angioplasty, Atherectomy and Stent
  • Coronary Artery Aneurysm
  • Coronary Artery Disease (CAD)
  • Coronary Artery Dissection
  • Coronary Interventional Procedures
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Disease
  • Heart Murmur
  • Heart Palpitations
  • Heart Tumors, Benign
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypertensive Heart Disease
  • Hypotension
  • 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
  • Limb Swelling
  • Limb Swelling Caused by Fluid Overload
  • Lipidoses (incl. Gaucher Disease)
  • Mitral Valve Disease
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Mitral Valve Surgery
  • Non-Coronary Angioplasty, Atherectomy, and Stenting
  • Pacemaker Insertion or Replacement
  • Pericardial Disease
  • Peripheral Artery Catheterization
  • Peripheral Artery Disease
  • Peripheral Vascular Intervention
  • Primary Pulmonary Hypertension
  • Pulmonary Disease
  • Pulmonary Edema
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Pulmonary Valve Surgery
  • Reflex Sympathetic Dystrophy
  • Removal or Revision of Pacemaker or Cardioverter and-or Defibrillator
  • Secondary Hypertension
  • Septal Defect
  • Syncope
  • Thoracentesis
  • Thrombolysis
  • Thrombosis
  • Tilt Testing or Cardiac Event Monitors
  • Transcatheter Aortic Valve Replacement (TAVR)
  • Tricuspid Valve Disease
  • Tricuspid Valve Surgery
  • Valve Repair or Replacement (Aortic, Mitral, Tricuspid, and Pulmonary)
  • Vascular Disease
  • Vascular Duplex Ultrasonography and Plethysmography
  • Vascular Surgical Procedure

About Me

Care Philosophy

I believe in treating my patients with dignity and respect and providing care tailored to the indivdual needs of the patient.

Specialties

  • Interventional Cardiology
  • Cardiology

Board Certifications

  • Cardiovascular Disease
  • Internal Medicine
  • Interventional Cardiology

Education

1988
San Francisco Heart Institute-Seton Medical Center
Fellowship Hospital
1987
University Of Pittsburg Medical Center
Fellowship Hospital
1984
University Of Pittsburg Medical Center
Residency Hospital
1982
University Of Pittsburg Medical Center
Internship Hospital
1981
University of Pittsburg School of Medicine
Medical School
1988
1987
1984
1982
1981

Awards

Dr. Marquardt's Reviews

Likelihood to recommend Dr. Marquardt

4.8

Based on 22 reviews

5 Stars
90.9090909090909%
(20)
4 Stars
4.545454545454546%
(1)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
4.545454545454546%
(1)

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Dr. Marquardt?
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Average Reported Wait Time
  • 10 – 15 minutes
Dr. Marquardt's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Walt Marquardt, MD
RecentHighestLowestMost Helpful
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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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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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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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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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Dr. Marquardt has providing care for my Grandmother, father and mother, myself and now my mother-in-law. He has been thoughtful, caring and the entire family has total confidence in his diagnoses and treatment recommendations. We are very lucky to have a man of his quality and integrity in our area.
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Affiliated Hospitals

Check the quality of care at hospitals where Dr. Marquardt treats patients.

Learn more

61% Patient experience rating, 8% lower than the national average

  • Patient Safety Excellence Award™ (2018)

77% Patient experience rating, 8% higher than the national average

  • America's 250 Best Hospitals Award™ (2017)
  • Cardiac Care Excellence Award™ (2017)
  • Cardiac Surgery Excellence Award™ (2017)

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