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Thankful so such a great team to help with our kiddos!
December 30, 2023
I was very thankful and appreciative of the care I received today from the phone calls to the care to the sincere words towards my concerns.
November 30, 2023
Dr. Wendy is an excellent provider and my girls think she is great. Very professional but also down to earth and easily relates to teenagers.
October 4, 2023
She was very helpful in talking through options and what she’d recommend. She was also very good at explaining to my daughter what she was doing as she did it.
September 14, 2023
So pleasant and knowledgeable!!! Great sense of humor!!
August 23, 2023
You can tell Dr Wendy really enjoys interacting with kids! She works hard to engage them.
July 1, 2023
Fue muy amable y comprensiva. Tuve paciencia y intento entender lo mas que podía posiblemente y mantenía nuestra opinión altanto.
May 26, 2023
I appreciate Dr. Thiessen so much. She takes plenty of time to address all of our concerns and has a genuine interest in our child and her health!
May 8, 2023
Dr Wendy always works hard to make sure my young son is involved in his appointment and gets to answer questions. She also let him sit next to his baby brother on the exam table for baby brother's visit. She is always patient with my kids and works to draw them into conversation. Dr Wendy also called me to follow up on something she forgot to ask about during the visit which was great. She and nurse Kendra always take great care of us!
March 14, 2023
Dr. Wendy is compassionate and respectful to our family’s needs and always takes time to answer questions thoroughly.
February 10, 2023
Dr. Wendy answered all of my questions and took time to make sure we have a plan moving forward for treatment and options!
January 24, 2023
Dr. Thiessen is amazing with our kiddos! She always makes them feel welcome and is very attentive to their concerns!
January 18, 2023
Wendy has been our pediatrician for nearly 20 years. I appreciate her professionalism. Her team is fantastic.
December 10, 2022
Dr. Wendy is kind, patient, and attentive during every visit! She is very understanding, trustworthy, and supportive. We are incredibly grateful for her
November 18, 2022
Dr Wendy did a great job trying to involve my child in the conversation about her health. She is very friendly and answered my questions.
November 12, 2022
Dr. Thiessen continues to be an excellent medical provider for our children. She is very knowledgeable, compassionate, and personable.
October 28, 2022
Wendy is wonderful. She is very caring, always makes sure to address any and all concerns we have.
October 14, 2022
Dr. Wendy is always attentive, and makes sure any concerns are addressed. She's always knowledgeable, and I appreciate her keeping up with covid info and current recommendations, always changing as they are.
August 24, 2022
Dr Wendy is AMAZING with my son. He is autistic and she is so very kind and patient with him. She even took time to read to him. I truly appreciate that. Thank you.
July 22, 2022
We were seen in a timely manner and well informed during our visit.
March 18, 2022
Dr Wendy and Kendra are amazing! They listen and honestly enjoy their job as well as the kids they work with.
March 18, 2022
Dr. Theissen is always very attentive to our children's healthcare needs. She takes time to listen to our concerns, includes us in the decision making process, and is aways very reassuring. She is an excellent provider.
March 17, 2022
Dr. Wendy is always a pleasure to see and work with to keep our kids safe and healthy. We love you Wendy!! Keep up the great work and hopefully we do not need to see you soon.
March 11, 2022
You have amazing service and professional.
December 23, 2021
She does a great job and is very thorough.
December 10, 2021
Joined McFarland Clinic
Education & Professional Certification
- American Board of Pediatrics
- Neonatal Resuscitation Program (NRP)
- Pediatric Advanced Life Support (PALS)
University of Iowa, Iowa City, IA
- BS, 1991-1995
University of Iowa College of Medicine, Iowa City, IA
- MD, 1995-1999
Blank Children's Hospital, Des Moines, IA
- Pediatrics, 1999-2002
- Fellow, American Academy of Pediatrics
- Iowa Medical Society
- Marshall County Medical Society
Professional & Personal Interests
- Department Chair, McFarland Clinic Marshalltown Pediatrics
- Former Member, McFarland Clinic Board of Directors
Hobbies and Personal Interests
Singing and playing the piano
- Drug Endangered Children Committee (DEC)
- Active member of Grace Church in Marshalltown