Dr. Wendy does a great job. She is kind, caring, professional, and is great with the kids. I really appreciate that she takes the time to address concerns and doesn't make you feel rushed or like you are a burden.

December 17, 2024

Dr. Wendy consistently provides exceptional care, making our children feel valued.

October 25, 2024

I love Dr. Wendy and so do the kids! She is always sweet, kind, thorough, and helpful. She gives the best tips and you can tell She truly cares about her patients!

September 18, 2024

I appreciate Dr. Wendy always making time to answer my questions.

August 27, 2024

Wendy takes the time to listen to everything we want to talk about and always gives us a clear explanation and plan.

August 24, 2024

Dr. Wendy is sweet, caring, knowledgeable and she is respectful of our convictions as a family. We are grateful that she is our kids doctor! She is a blessing.

June 27, 2024

Dr. Wendy always takes her time, is thorough and gives education to both the patient and the parents.

May 20, 2024

She was great! She was very kind and supportive, and was absolutely wonderful with my little one!

March 28, 2024

She is professional, caring, knowledgeable, and respectful of our family's values! I am thankful that God blessed us with her as our children's doctor. She makes going to their checkups a peaceful thing for the kids and that is such a blessing!

February 16, 2024

Great experience with Dr. Wendy & nurses. Professional yet personable & has a fun friendly deamor that makes kids (and parents!) feel comfortable.

January 31, 2024

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

About

Medical Interests

Asthma
ADHD

Joined McFarland Clinic

August 2002

Languages Spoken

Spanish

Education & Professional Certification

Certifications

American Board of Pediatrics
Neonatal Resuscitation Program (NRP)
Pediatric Advanced Life Support (PALS)

Education

University of Iowa, Iowa City, IA

BS, 1991-1995

University of Iowa College of Medicine, Iowa City, IA

MD, 1995-1999

Residency

Blank Children's Hospital, Des Moines, IA

Pediatrics, 1999-2002

Professional Societies

Fellow, American Academy of Pediatrics
Iowa Medical Society
Marshall County Medical Society

Professional & Personal Interests

Leadership Roles

Department Chair, McFarland Clinic Marshalltown Pediatrics
Former Member, McFarland Clinic Board of Directors

Hobbies and Personal Interests

Singing and playing the piano

Community Involvement

Drug Endangered Children Committee (DEC)
Active member of Grace Church in Marshalltown

Wendy Thiessen, MD

Primary Clinic

Marshalltown Office

Patient Testimonials