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Karen R. Garnaas

Karen R. Garnaas, MD

Specializing in Neurology

“By getting to know each patient as a whole person, I’m able to put the pieces of the puzzle together and empower them to be as healthy as possible.“

Office Information

About Me

For experienced and compassionate care related to conditions of the brain, spine and nervous system, look to Karen Garnaas, MD, a neurologist at Avera Medical Group Neurology in Sioux Falls, SD.

Brain, Spine & Nervous System Expertise

As a general neurologist, Dr. Garnaas diagnosis and treats a wide variety of neurologic conditions.

With fellowship training and additional board certification in electromyography and neuromuscular disorders, she offers expertise in treating a wide variety of neuromuscular disorders. A particular passion of hers is for caring for patients and families affected by amyotrophic lateral sclerosis (ALS). She was also involved in the development of Avera Brain & Spine Institute's multidisciplinary ALS clinic – South Dakota’s only ALS Association Recognized Treatment Center.

You can also count on Dr. Garnaas for specialty expertise and interest in the treatment of multiple sclerosis (MS), and the use of botulinum toxin for treatment of a variety of movement disorders, spasticity and spasms. She currently serves as the chief of staff for Avera McKennan Hospital & University Health Center.

Compassionate Care

When you work with Dr. Garnaas, you’ll benefit from not only her expertise, but also her compassion. “When someone has a nervous system condition, it can bring a lot of fear of the unknown and questions,” she says. “I try to meet patients right where they are, break everything down into something that’s easy to understand, dispel some fears and offer reassurance.”

“I love what I do,” adds Dr. Garnaas. “The best part is being able to develop relationships with my patients over time.”

Active Lifestyle

In her free time, Dr. Garnaas enjoys spending time with her husband and five kids. She also likes traveling and exploring – especially while snorkeling on tropical beach vacations. “It’s so fascinating to see the beauty and variety of the sea. It testifies to an amazing Creator,” she says.



Mayo Medical School, Rochester, MN, Medical School


Mayo Medical School, Rochester, MN, Transitional

University of Michigan Hospitals, Ann Arbor, Neurology


Mayo Medical School, Rochester, MN, Electromyography


American Board of Psychiatry and Neurology; American Board of Neuromuscular and Electrodiagnostic Medicine

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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