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Locations

Wheaton

150 E. Willow Ave.Suite 300Wheaton, Illinois 60187
630-510-6900

About Mark K. Isoniemi, MD

Philosophy of Care

I look to empower patients to improve their own health through appropriate preventive care, healthy nutrition and physical activity. When needed, I will coordinate state-of-the-art care with all the tools Duly Health and Care has to offer.

Languages

English

Finnish

Clinical Interests

I enjoy the broad spectrum of family medicine, from newborn care to end-of-life issues.

Personal Interests

I cherish time with my family, as well as golfing, fishing, theatre and hockey.

Memberships

American Academy of Family Physicians

American Medical Association

Education
Schools
Ohio State UniversityGraduation Date: 1997Degree: MD
Residency
MacNeal HospitalResident in Family Practice

Ratings and Comments

Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.

Dr. Mark Isoniemi is one of the best doctors I have ever seen. Very kind, understanding, and patient. Exactly what everyone needs out of doctor. Listens and is educated enough to help.

5

Feb 8, 2026

Dr. Isoniemi is outstanding!

5

Feb 3, 2026

Dr. Isoniemi does a fantastic job walking through the physical , listening and addressing all concerns.

5

Feb 3, 2026

Dr Isoniemi is a very caring doctor and excellent listener.

5

Feb 1, 2026

Dr. Isoniemi is always very professional and always thinking ahead for what test should be done prior to the next visit so that we actually have something to discuss at the next visit. I really appreciate his candour and overall concern for my health and well-being.

5

Dec 31, 2025

Patient Satisfaction Rating

4.9

681 Reviews

The Patient Satisfaction Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.

Contact Us
Need Help?
Corporate Mailing Address1100 W 31st Street
Downers Grove, Illinois 60515
Main Line - (630) 469 9200Billing Customer Service - (866) 734 7680
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