I fortunately had the privilege to become friends with Mike in the past 25 years or maybe a few more even. I always looked forward to the times that we would share. We had very mutual musical interests, an appreciation for many of the same outdoor activities, and a love of campfires and a can of beer. He blessed me with his wisdom and knowledge of many subjects, for he was the most intelligent and accomplished of any of my friends, but so down to earth, that he was a child of the earth. There were many things I had looked forward to our doing in the near future. Not a day has passed since his passing that I haven’t thought of him and missed him. He was such a wonderful person and definitely one of my favorite people.

My deepest sympathy to his dear Lauri Di.

So sorry to hear of Mike's passing. I always thought I would see him again. The type of guy who shows up and makes everything better. A great loss.

Janet Kirwan MD friend and colleague from Vermont

"Biker Mike" was a special friend to me from years ago when we were in lived in Lexington, KY. He was a bit intimidating to me presenting myself with the hard look of a biker from a gang; but what I discovered was a very kind and honorable man - a real softie. I remember late nights riding down to the river and talking about everything. We lost contact over the years but it sounds like he lived a good life with a beloved wife - how lucky! Biker and I share a birthday and this March 4th I will raise a glass to the wonderful memories.

I was fortunate enough to work with Mike at Mercy. He was a fantastic colleague, an excellent clinician and I knew when I ran into him anywhere in the hospital, my day would be brighter than before. He was dedicated to his patients but also knew when to crack a joke or lighten things up and I enjoyed talking bikes and music with him. I was sorry to see him retire but know he had a lot of good plans to keep him occupied; so sad that time was as short as it was. He deserved more. My condolences to his wife and family.

Mikey was one of the closest and best friends I have ever had. We met at Knox College and maintained a friendship for 50 years. We bonded over interests in British motorcycles, International Scouts, the Grateful Dead and the consumption of vast quantities of all kinds of beer. Mikey was one of the only people crazy enough to ride a BSA 441 Victor from Maryland to Illinois. It took 3 days for the feeling in his hands and feet to return. My wife Laura was also a close friend of his in college. Our paths crossed numerous times as we all moved around the country in our early years. We glad when Lauri Di entered his life. He was an amazing person, willing to help anyone in need. He will be greatly missed.

He was a wonderful mentor. Loved picking his brain. He was always straight forward with communicating his thoughts. I will miss coming over to his camp in Winfield and see him kicked back in his chair with that big smile.

Dr. Hajdu was an amazing doctor and his patients loved him. We all at old Mercy will miss greatly.

Dr Mike as I called him was one of a kind. He was not only my cardiologist but my friend. I am so sorry for the loss of this wonderful man. Lori, my heart goes out to you.

Lori, I really just do not know what to say. I am so very sorry for your loss. Mike was a good friend to me and was so much fun to work with. I know he would have given the shirt off his back to anyone who was in need. I know he is in a good place, but earth got a lot less special without him here. His adventures were so many. I always loved hearing about them. I am sad he never got down to our cabin in southwest Mo to go fishing. Wishing you peace and comfort and hoping all the wonderful memories you have will help you through your loss. Love to you! Susan Harrison

Dr.Hajdu exemplified living life, enjoying one’s true self. He never met a stranger always made his patients feel heard and that they mattered. Quick witted, always a pleasure to work with. We can’t believe he is gone our condolences to Lauri, their pups, and his family and friends. Godspeed Dr. Hajdu, until we all meet again.

I had the pleasure of working with Mike at the Iowa Heart Center for a time. He was always so funny and upbeat. He was a great Dr. He will be missed. It was a pleasure to know him.

Sending my deepest heartfelt sympathy to you. Dr. Hajdu was a joy to have on the Medical Staff at Mercy and we appreciated his smile, sense of humor and the care he provided to the patients in our community. God Bless,

Dear Lauri, No words other than I am so sorry. The world has lost a bright fellow who had such a good heart, curious way, and adventurous spirit.