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About Me

If you or a loved one needs care for a condition affecting the brain, spine or nervous system, look to Andrew Ridder, MD, a neurologist at Avera Medical Group Neurology in Sioux Falls, SD.

Expert Care for Your Brain, Spine & Nervous System

As a general neurologist, Dr. Ridder provides expert diagnosis and treatment of neurological diseases and disorders. He also has additional fellowship training in movement disorders, such as:

  • Parkinson’s disease
  • Huntington’s disease
  • Balance disorders
  • Essential tremor

Active Lifestyle

In his free time, Dr. Ridder enjoys spending time with his family, biking, camping and participating in choirs.

Special Interests

Certificate in Movement Disorders

Experience

Education

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

Internships

Sanford School of Medicine, Sioux Falls, SD, Internal Medicine

Residency

University of Michigan Hospitals, Ann Arbor, Neurology

Fellowship

University of Michigan Hospitals, Ann Arbor, Neurology

Professional Memberships

  • American Medical Association
  • American Academy of Neurology

Certifications

American Board of Psychiatry & Neurology - Neurology

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.

November 28, 2025
Was great
November 15, 2025
Super appt
November 05, 2025
Dr Ridder is awesome.
November 02, 2025
Thank you Dr. Ridder for answering my many questions (that I always seem to have) and your kindness during my visits you make me feel very comfortable and I sincerely appreciate it! Thank you!
November 01, 2025
Dr Ridder is professional and thorough. Provided info we needed and suggestions. Also quickly provided the treatment and follow up ideas
October 24, 2025
Dr. Ridder is a good listener! Great wisdom
October 23, 2025
Had to wait a little longer than usual, but other than that everything went great.
October 06, 2025
I had a great experience with Dr. Riddler. He listened to my concerns and was able to walk me through the process
October 04, 2025
Finally, Dr Ridder really listened to me and took notes on everything I said. He gave me hope that he would be able to help me.
September 29, 2025
Good dude
September 25, 2025
Have always had a very good experience with Dr Ritter's team. Thank you for the excellent care and support
September 21, 2025
Dr Ridder and staff are always wonderful to me
September 15, 2025
Dr. Ridder and his staff are awesome
September 14, 2025
All were very nice.
September 13, 2025
Everyone was very Happy & Nice!
September 12, 2025
Dr Ridder is everything that Avera and its Mission stands for. His patients love him and now that I am one of his patients too I understand why.
September 10, 2025
Very please with the whole Avera system.
September 08, 2025
All we came in contact with were very kind.
August 26, 2025
I sometimes feel as if Dr. Doesn't like to discuss other options because what we are doing is working "good enough" if that makes sense. I have struggled with the up and down of using botox as a treatment. I do think it is effective but sometimes I questions if it's as effective as maybe something else would be. I think he is fair and does a very good job and is by far the best neurologist I have seen to date.
August 24, 2025
I was early because of bus ride. They got me in and out fast. Great job
July 30, 2025
Have seen Dr ridder before and he is always friendly and is professional ans knowledgeable.
July 27, 2025
Excellent explanation of Essential tremor and treatment options.
July 27, 2025
Great
July 27, 2025
Very good
July 27, 2025
I had questions about a new treatment Dr. Ridder explained the treatment and why this would not work for me at this time.
July 20, 2025
Ok
July 10, 2025
Dr. Ridder was so informative as we bombarded him with questions! Kind, polite, understanding, thoughtful, thank youMade me feel comfortable as I was quite nervous,,,,,
June 22, 2025
I'd like a more indepth explanation of my condition.
June 21, 2025
Very good rxperience
June 18, 2025
Dr. Ridder is highly knowledgeable and listens very well. He proposed specific solutions to my problem upon which I am acting.
June 05, 2025
Very impressed with Dr Ridder
May 25, 2025
Very professional and allowed for questions and dialogue
May 25, 2025
We love Dr Ridder. He's pleasant and easy to talk to.
May 22, 2025
Dr.Ridder is definitely a highly qualified expert in his field.
May 22, 2025
Always good with Dr. Ridder
May 22, 2025
He is always helpful and in a good mood. Very easy to talk to and caring.
May 16, 2025
Dr Ridder has always been very attentive and answers any concerns I have.
May 11, 2025
I throughly enjoyed the visit. Being a medical professional myself, he listened to my concerns and didn't just brush them off.
May 11, 2025
Working with a nurse pt can be challenging. He was amazingly patient, kind, knowledgeable. Reassured and educated where needed.
May 03, 2025
Dr. Listened and answered my questions.
April 17, 2025
Good
April 01, 2025
Dr. Ridder was very knowledgeable. He has a pleasant personality and is easy to talk to. I appreciate the help he provided me.
March 29, 2025
Dr was really nice,listened to what I had to say.he solved my issue for me.Great Dr.
March 20, 2025
Dr ridder is an excellent doctor.
March 17, 2025
I am very happy with Dr Ridder. I felt very cared for, understood, and like I mattered. He listened to my concerns and addressed them in a very nice manner. I have a lot of trust in Dr Ridder.
March 11, 2025
Dr Ridder is very good at making you feel good.
March 05, 2025
Very knowledgeable
February 27, 2025
Dr Ridder was terrible
February 14, 2025
So grateful and blessed to have such a Amazing group
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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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