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Dianne DeKeyser

Dianne DeKeyser, MD


"My best advice is to never give up. There’s always hope."

Office Information

About Me

If you or a loved one would benefit from expert, compassionate care for a mental health disorder, look to Dianne DeKeyser, MD at Avera Medical Group University Psychiatry Associates in Sioux Falls, SD.

Expert Care for Mental Illness

As a board-certified psychiatrist, Dr. DeKeyser diagnoses, treats and provides medication management for a variety of mental health conditions. She also specializes in helping patients find healing and freedom from substance abuse.

“I strive to create a safe space for each patient,” she says. “It’s all about making their lives and their family’s lives better.”

Dr. DeKeyser also speaks fluent Italian.

Active Lifestyle

In her free time, Dr. DeKeyser enjoys spending time with her family and friends, decorating and volunteering for organizations such as Big Brother Big Sister, Special Olympics and the National Alliance on Mental Illness (NAMI).



Spartan Health Sciences University School of Medicine, St. Lucia, West Indies, Medical School


New York Medical College, Valhalla, NY, Psychiatry


American Board of Psychiatry & Neurology - Psychiatry

This directory contains information about the provider members of Independent Health Care Associates, Avera Health and all Avera entities, members of the Avera Medical Group, and employed select providers with Avera McKennan, Sioux Falls, SD and Avera Marshall, Marshall, MN and physicians with hospital privileges at Avera St. Luke's, Aberdeen, SD; Avera Sacred Heart, Yankton, SD; Avera Queen of Peace, Mitchell, SD; Avera St. Mary's, Pierre, SD.

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Avera is a health ministry rooted in the Gospel. Our mission is to make a positive impact in the lives and health of persons and communities by providing quality services guided by Christian values.

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