Sorry, there was a problem.

An unexpected error occurred and your request couldn't be handled. Please call a Dignity Health representative at
(844) 274-8497
Chat with us here.

Reference code:
Save a doctor and build your
medical team
Doctor is saved to your
medical team
Saving a doctor is currently down.
Please try again later.

Dr. Walt Marquardt, MD

Interventional Cardiology

(530) 477-8358

Mercy Medical Group

150 Catherine Ln Ste D Grass Valley , CA 95945

Get to Know Dr. Marquardt

Accepting Patients



37 Years

Care Philosophy

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


University of Pittsburg School of Medicine 1981

University of Pittsburg Medical Center 1984

San Francisco Heart Institute - Seton Medical Center 1988

University of Pittsburg Medical Center 1987

University of Pittsburg Medical Center 1982

Dr. Marquardt's Experience

Interventional Cardiology


Awards & Recognitions

Recognized Doctor

Dr. Marquardt's Locations

Accepting New Patients


Mercy Medical Group

150 Catherine Ln Ste D, Grass Valley, CA 95945

(530) 477-8358 Fax: (530) 477-2015

Mercy Medical Group

3941 J St Ste 260, Sacramento, CA 95819

(916) 736-2323 Fax: (916) 736-0620

Affiliated Hospitals

Sierra Nevada Memorial Hospital

155 Glasson Way, Grass Valley, CA 95945

Mercy General Hospital

4001 J St, Sacramento, CA 95819

Notice: "Find a Doctor" is provided by Dignity Health as a convenience to you. The information on each participating doctor is submitted to Dignity Health by each doctor and is not independently verified by Dignity Health. Each doctor is solely responsible for the completeness and accuracy of the information listed about him or her. Dignity Health is not responsible for any loss or damages caused by your reliance on the doctor information contained on Find a Doctor. You should telephone the doctor's office in advance to verify the accuracy of the information.