Jason Koelewyn, MD

Specialty:

Medical Clinics, Emergency (ER - 24/7), Labor & Delivery, Cardiology (Heart)

Location

Sioux Center Medical Clinic
1101 9th St SE
Sioux Center IA 51250

Call: (712) 722-2609

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About Dr. Koelewyn

Seeing patients in Sioux Center

Dr. Jason Koelewyn has been with Sioux Center Health for nearly 20 years, offering full-spectrum care as a family physician and obstetrician. He treats patients of all ages, from newborns to seniors, and is known for his thoughtful, hands-on approach to medicine.

Patients often describe Dr. Koelewyn as patient, kind, and attentive, taking time to clearly explain diagnoses and treatment options. He is trusted for his thorough communication and commitment to making each person feel heard, supported, and prioritized — no matter how busy his day. He believes in whole person care, addressing physical, physiological, and spiritual needs.

In addition to his clinical work, he serves as the Cardiac Medical Director for Sioux Center Health, Team Physician for Dordt University Football, and Sioux County Medical Examiner.

Originally from California, Dr. Koelewyn is fluent in Spanish and values strong, respectful relationships with patients from all backgrounds. He enjoys participating in mission trips and being active in his church community.

Outside of medicine, he values spending time with his wife and 4 children. He’s a dedicated Dordt University fan and loves attending Defender games. He also enjoys racquetball, pickleball, gardening, woodworking, and cooking.

Dr. Koelewyn treated me [in the ER] like he had no other patients there, which I knew not to be the case.  He treated me with patience, kindness and clearly explained my injury.

— Patient Survey Comment

Dr. Koelewyn asked lots of discovery questions to best understand. He is very personable & friendly.

— Patient Survey Comment

Dr. Koelewyn was patient with me and gave me all the time I needed to understand my situation and alternatives. He provided everything I could ask for.

— Patient Survey Comment

I've been impressed with Dr. Koelewyn since the very first time my husband went to see him! He was the new guy on the block at the time, but was super intuitive and very dialed in on my husband's needs and concerns!! I had been going to a nurse practitioner for about twenty years, but when she transitioned to another position, I knew immediately I would be seeing Dr. Koelewyn! He is very knowledgeable professional, caring, intuitive & willing to explore whatever options are needed to create a good health plan!

— Patient Survey Comment

I felt very heard by Dr. Koelewyn. I gave him a lot of information, and he considered a few different treatment options that he talked me through before deciding on a plan that I was comfortable with and he thought would be successful.

— Patient Survey Comment

Explained & answered my questions with very detailed descriptions & relevance to my concerns. Dr. Koelewyn is a person I can trust as having my best health interests.

— Patient Survey Comment

Dr. Koelewyn is excellent, always very attentive to all my baby's information.

— Patient Survey Comment

Services

Medical Clinics

At Sioux Center Health Medical Clinics, we believe exceptional health care starts with a trusted relationship. Our family medicine providers are here to walk alongside you through every season of life, delivering personalized care that meets your unique needs.

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Pregnancy Care

Choosing a physician to deliver your baby is one of the most important decisions you’ll make for your birth experience and your family’s ongoing healthcare. Your OB physician will walk with you through life’s most meaningful moments, from your first prenatal visit to welcoming your baby into the world — and beyond. Whether you’re preparing for your first child or expanding your family, our experienced and caring OB doctors are here to ensure your journey is safe, supportive, and unforgettable.

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Emergency (ER - 24/7)

The Sioux Center Health Emergency Department is here for you 24 hours a day, 7 days a week. Our experienced team of physicians, nurses, and medical professionals is always ready to provide expert care when you need it most.

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