About Me

For all of your family’s skin care needs, look to Katie Bonnichsen, MD, a dermatologist with Avera Medical Group, located at The Helmsley Center at Avera St. Mary's Hospital in Pierre.

Expert Dermatological Care for Your Skin

As a general dermatologist, Dr. Bonnichsen provides a wide variety of skin care services. Look to her for the diagnosis and treatment of skin conditions, such as:

  • Acne
  • Birthmarks
  • Dermatitis
  • Dry skin
  • Moles, warts and other skin growths
  • Psoriasis
  • Skin cancer
  • Skin infections
  • Sun-damaged skin

“My work as a dermatologist is both challenging and meaningful,” she says. “I enjoy getting to see patients of all ages and following them through the stages of life.”

Dr. Bonnichsen is also passionate about skin cancer prevention and treatment. “An ounce of prevention by protecting yourself from the sun is worth a pound of cure. It’s easier to take small steps now to prevent skin cancer from ever happening. But even if it does, we’re here to help you.”

Active Lifestyle

In her free time, Dr. Bonnichsen enjoys spending time with her family, traveling, reading, baking, doing yoga, and spending time outdoors, especially boating on the river.

Experience

Education

University of South Dakota Sanford School of Medicine, Vermillion, Medical School

Residency

University of Wisconsin Hospitals and Clinics, Madison, Dermatology

Professional Memberships

  • American Academy of Dermatology
  • American Medical Association
  • Women’s Dermatologic Society
  • Alpha Omega Alpha Honor Medical Society

Certifications

Eligible - American Board of Dermatology

Reviews

We value patient feedback and are committed to providing you with information, so you can make informed decisions about your health care, physicians and other providers in your care journey. Patient ratings and comments are gathered from the post-visit experience survey. Learn more.

October 31, 2025
Wonderful staff...I drive 100 miles rather than switching drs
October 30, 2025
Great Dr and staff
October 27, 2025
Wonderful care!!
October 27, 2025
As you can see my experience was excellent.
October 25, 2025
Great staff
October 19, 2025
I recommend Dr. Bonnichsen to my friends.
October 19, 2025
Always great
October 19, 2025
AOK
October 12, 2025
Satisfying everything was well done thank you.
October 11, 2025
Always a good experience with Dr.
October 10, 2025
Excellent Care
October 05, 2025
Can not begin to express my appreciation for all during from registration, care given, to setting up my next appointment.
October 04, 2025
My questions were answered but limited
September 21, 2025
Dr Bonnichson gave me excellent care
September 19, 2025
Very professional and polite. Made me feel that she really cared about my condition.
September 12, 2025
Very good experience, quick and easy!
September 07, 2025
They made me feel welcome and made me feel like it was good decision to come in for checkup
September 05, 2025
Great appointment.
September 05, 2025
Dr. Bonnichsen is always thorough, kind, caring and involves me in the decisions made.
August 31, 2025
Very good
August 31, 2025
Great people,very pleasant atmosphere
August 30, 2025
Very courteous and gentle, making potential pain next to zero. Awesome
August 09, 2025
Good
August 01, 2025
Doctor and nurse was so helpful, very kind
July 26, 2025
Very informative and personal
July 25, 2025
She explained things very good.
July 13, 2025
Compassionate and explained everything in layman's terms
July 11, 2025
I needed the provider to send a letter to my specialist ophthalmologist. She had the letter ready for my review. Her swift attention to the matter was very much appreciated.
July 11, 2025
I felt the exam was thorough. Answered all of my questions,
June 15, 2025
Excellent experience.
June 08, 2025
Very good
June 07, 2025
Always pleasant people
May 24, 2025
Very professional
May 15, 2025
Good
May 11, 2025
Doctor was great
April 25, 2025
Excellent experience
April 25, 2025
All good
April 24, 2025
Very very happy after moving from another city
April 18, 2025
She was absolutely wonderful
April 10, 2025
Good
April 05, 2025
She was excellent
March 28, 2025
Dr Bonnichsen is very knowledgeable, professional and kind.
March 24, 2025
Dr Bonnichsen explained things answered all my questions and reassured me.
March 20, 2025
I have much respect and confidence in Dr. Bonnichsen.
March 14, 2025
Kind, considerate, clearly cared about me, professional
March 07, 2025
Always felt like I was part of the family
March 07, 2025
Excellent care
March 05, 2025
Excellent care and service
March 01, 2025
Great csre
February 25, 2025
I was so impressed by Dr. Bonnichsen. She was so nice, professional, and easy to talk to.
February 09, 2025
Dr. Bonnichsen is great and would highly recommend her to others.

Directory Disclaimers

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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