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Dr. Walt Marquardt, MD

Dr. Walt Marquardt, MD

Age 65 Interventional Cardiology M
(23) 23 reviews

Telehealth available

Accepting New Patients


Dr. Walt Marquardt, MD is a interventional cardiology specialist in Grass Valley, CA. Dr. Marquardt completed a residency at Hosp Of U Hlth Ctr-U Pittsburgh. He currently practices at Mercy Medical Group and is affiliated with Mercy General Hospital. He accepts multiple insurance plans. Dr. Marquardt is board certified in Interventional Cardiology.


  • San Francisco Hrt Inst-Seton Med Ctr, Fellowship Hospital — 1988
  • Hosp Of U Hlth Ctr-U Pittsburgh, Fellowship Hospital — 1987
  • Hosp Of U Hlth Ctr-U Pittsburgh, Residency Hospital — 1984
  • Hosp Of U Hlth Ctr-U Pittsburgh, Internship Hospital — 1982
  • University of Pittsburgh School of Medicine, Medical School — 1981

Insurance Accepted

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

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  1. Mercy Medical Group

    1. 1
      Grass Valley - Catherine Ln.
      150 Catherine Ln, Grass Valley, CA 95945 Existing Patients: (530) 477-8358
    2. 2
      Mercy Medical Plaza - Cardiology
      3941 J St Ste 260, Sacramento, CA 95819 Existing Patients: (916) 736-2323

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Best in the West
Craig Anderson — Aug 30, 2020
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Dr. Walt Marquardt, MD
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Frequently Asked Questions

Dr. Marquardt frequently treats Adult Congenital Heart Conditions, Interventional Cardiac Procedures, and Cardiac Electrical System Procedures.  

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Hospital Affiliations

  • Mercy General Hospital
  • Sierra Nevada Memorial Hospital