So sorry to hear the sad news that Michael OSullivan passed away.

I will always remember him as the CEO who turned things around at Mayo Clinic Scottsdale.
He really saved us from what may have been our early fiscal demise.

He was always fair, honest, and a true gentleman.

I remember shortly after arriving in Arizona, Mike O’Sullivan invited each one of the physician staff to his office for a one on one interview. He asked each of us for our thoughts and recommendations for how to make things better here. He made us all feel we were a vital part of the plan for the future of Mayo Clinic. 

He inspired each of us to do our personal best.

We all loved the special touch that Michael and Margaret shared with us.

Dear Nora, Dan, Olivia, JP, and your entire family, 

We never had the honor of knowing your dad, but what comfort you must be getting with the abundance of sweet, warm, funny memories of him.  He accomplished so much in his lifetime, but we think the most important was leading a close and happy family.  
“Those we love don’t go away, They walk beside us every day, unseen, unheard, but always near.  Still loved, still missed and very dear.”

Kitty and John Pallanch

Stevenson, Washington

Dear Margaret, Nora, Deirdre, Paul, Steve, Finola and your extended family, our sincere condolences on the recent passing of Michael.

We remember him with great fondness, his warmth, intellect, great interest in everyone, hospitality and singing voice. He and all his family were lovely friends when we lived in Rochester and Scottsdale. What a legacy he has left at Mayo clinic and beyond! He made a wonderful imprint on this world. 

May he rest in peace  

Billy and Gillian

Cork, Ireland 

So sorry to hear the sad news that Michael OSullivan passed away.

I will always remember him as the CEO who turned things around at Mayo Clinic Scottsdale.
He really saved us from what may have been our early fiscal demise.

He was always fair, honest, and a true gentleman.

I remember shortly after arriving in Arizona, Mike O’Sullivan invited each one of the physician staff to his office for a one on one interview. He asked each of us for our thoughts and recommendations for how to make things better here. He made us all feel we were a vital part of the plan for the future of Mayo Clinic. 

He inspired each of us to do our personal best.

We all loved the special touch that Michael and Margaret shared with us.

Dear Finola and Family,

My deepest condolences, I'm sorry to hear of your loss.  Wishing you peace during this difficult time.

Respectfully,

Firas

Firas Abdul-Hadi 

Deepest condolences to the O’Sullivan family. Dr. O’Sullivan was a dear mentor to me. May he rest in eternal peace.

Beloved O’Sullivan Family and dearest Maggie, we are holding each and all of you with abounding love and tender hearts. The service was touching and captured in so many of all the words shared Michael and his very essence. We were there in spirit and on live stream. We will sing many songs throughout the day in honor of our most cherished and dear friend, Michael. It was an honor and privilege to have his friendship. All love, Shay & Phyllis

Rebecca and I were saddened by the death of Michael but celebrate his long and successful life. Michael and I worked together as he shepherded the growth of the Mayo Clinic Health System. His warm and engaging personality and his commitment to excellence were an inspiration to me. My career at Mayo changed due to his influence and support. When I saw Michael at Charter House recently he still had the twinkle in his eye and Margaret by his side. We will all miss him. Rob Nesse

There’s nothing I can say to fully explain how grateful I am for the O’Sullivan’s and their impact on my life. To put it simply, they are my family. I am forever in your debt Dr. O’Sullivan. Thank you all????

- Mymy 

To Maggie and all of the O’Sullivans, Palmers, Bushes and Nelsons:

I’m thinking of you during this time. I first knew Michael as Deirdre’s dad, but in the years since we first met,  he and Maggie (and all of you) became friends/family to me and Tong, and our kids. Our lives are infinitely better because Michael and the rest of you are part of them.

I think the first time I heard of Spider Lake, Maggie and Michael was when Maya spent close to a week there when she was 6 or 7 years old? At the time I thought, these Irish strangers with all their grandkids visiting them probably really don’t appreciate Maya interfering with their family time at the lake. Maya had so much fun, she made Deirdre and Mark bring her again. Once we bought our place up there, I saw that Maya wasn’t a burden to them, or interfering with family time because it appeared she had just become part of the family. I knew how Maya felt because I never turned down an invitation to come over, nor did I turn down an opportunity to invite myself over…  ???? I also learned, the O’Sullivans have a gift of adopting a lot of people into their fold.

The last time I saw Michael, his big soft pillowy hands had thinned, like the rest of him. I can’t forget his voice, telling a story, laughing, singing, or giving direction. I won’t forget the warm way he and Maggie always made me feel when we visited them at Spider Lake.  

I will miss Michael greatly, and carry him with me in my heart. 

Love you,

Tasha, Tong, Phoenix, Lucy and Maya

To Maggie and all of the O’Sullivans, Palmers, Bushes and Nelsons:

I’m thinking of you during this time. I first knew Michael as Deirdre’s dad, but in the years since we first met,  he and Maggie (and all of you) became friends/family to me and Tong, and our kids. Our lives are infinitely better because Michael and the rest of you are part of them.

I think the first time I heard of Spider Lake, Maggie and Michael was when Maya spent close to a week there when she was 6 or 7 years old? At the time I thought, these Irish strangers with all their grandkids visiting them probably really don’t appreciate Maya interfering with their family time at the lake. Maya had so much fun, she made Deirdre and Mark bring her again. Once we bought our place up there, I saw that Maya wasn’t a burden to them, or interfering with family time because it appeared she had just become part of the family. I knew how Maya felt because I never turned down an invitation to come over, nor did I turn down an opportunity to invite myself over…  ???? I also learned, the O’Sullivans have a gift of adopting a lot of people into their fold.

The last time I saw Michael, his big soft pillowy hands had thinned, like the rest of him. I can’t forget his voice, telling a story, laughing, singing, or giving direction. I won’t forget the warm way he and Maggie always made me feel when we visited them at Spider Lake.  

I will miss Michael greatly, and carry him with me in my heart. 

Love you,

Tasha, Tong, Phoenix, Lucy and Maya

My sincere condolences to the O'Sullivan family on Michael's loss. He was instrumental in guiding me toward a wonderful career in Pathology, in the USA and then in Ireland. He was also a great Kerryman and played Gaelic football with my uncle in Listowel. I was so pleased to hear from Mr. Listowel, Vincent Carmody, that Michael was honoured in his hometown last year. Ar dheis De go raibh a anam.    Kieran and Janet Sheahan, Dublin.  

My sincere condolences to the O'Sullivan family on Michael's loss. He was instrumental in guiding me toward a wonderful career in Pathology, in the USA and then in Ireland. He was also a great Kerryman and played Gaelic football with my uncle in Listowel. I was so pleased to hear from Mr. Listowel, Vincent Carmody, that Michael was honoured in his hometown last year. Ar dheis De go raibh a anam.    Kieran and Janet Sheahan, Dublin.  

Our deepest sympathy to Margaret, Nora , Deirdre, Finola, Stephen & Paul and to your families. We are so sorry to hear of Michael’s passing . We are thinking of you all at this sad time .    

Eddie & Carolann Horgan & Family, Ballybunion , Ireland. 

Our deepest sympathy to Margaret, Nora , Deirdre, Finola, Stephen & Paul and to your families. We are so sorry to hear of Michael’s passing . We are thinking of you all at this sad time .    

Eddie & Carolann Horgan & Family, Ballybunion , Ireland. 

To Maggie and all of the O’Sullivans, Palmers, Bushes and Nelsons:

I’m thinking of you during this time. I first knew Michael as Deirdre’s dad, but in the years since we first met,  he and Maggie (and all of you) became friends/family to me and Tong, and our kids. Our lives are infinitely better because Michael and the rest of you are part of them.

I think the first time I heard of Spider Lake, Maggie and Michael was when Maya spent close to a week there when she was 6 or 7 years old? At the time I thought, these Irish strangers with all their grandkids visiting them probably really don’t appreciate Maya interfering with their family time at the lake. Maya had so much fun, she made Deirdre and Mark bring her again. Once we bought our place up there, I saw that Maya wasn’t a burden to them, or interfering with family time because it appeared she had just become part of the family. I knew how Maya felt because I never turned down an invitation to come over, nor did I turn down an opportunity to invite myself over…  ???? I also learned, the O’Sullivans have a gift of adopting a lot of people into their fold.

The last time I saw Michael, his big soft pillowy hands had thinned, like the rest of him. I can’t forget his voice, telling a story, laughing, singing, or giving direction. I won’t forget the warm way he and Maggie always made me feel when we visited them at Spider Lake.  

I will miss Michael greatly, and carry him with me in my heart. 

Love you,

Tasha, Tong, Phoenix, Lucy and Maya

Dear Finola and family,

We’re so sorry to hear about your dad. Our thoughts and prayers to you and your family. 

Love,

Rhonda & Amir Khan

Dearest Nora and O'Sullivan family

My heart goes out for you during this profoundly sad time. Your father was a remarkable man whose spirit illuminated this word and blazed an extraordinary trail throughout his life.

The countless lives he touched through his work in medicine stand as a testament to his incredible vision and compassion. His legacy shines as brilliantly as the emerald isle, his home country .

While the pain of losing such a colossal figure may feel insurmountable now, I know you will carry his memory in your heart where it will continually inspire you with joie de vivre and integrity.

I am so very sorry I am not able to join the sing along. You and the entire family are in our thoughts.

With lots of love,

Duska and Slobodan  

Our deepest sympathy to Margaret, Nora , Deirdre, Finola, Stephen & Paul and to your families. We are so sorry to hear of Michael’s passing . We are thinking of you all at this sad time .    

Eddie & Carolann Horgan & Family, Ballybunion , Ireland. 

Deepest Condolences to Nora and all the O'Sullivan family on the passing of Michael. He was a wonderful friend to my mom and Dad and was very helpful with my mother's treatment when she had cancer. We were recently looking at lovely photos of my parents when they were on holidays visiting ye many years ago at your lakeside house. Thinking of you all at this very difficult time.

Jerome Shanahan and family.

Paul and Nancy Shanahans son.

Ballybunion.

Co. Kerry,

Ireland.

Our Heartfelt Condolences to Margaret,Nora,Deirdre,Finola,Paul,Stephen and extended O’Sullivan and Stack Families on the Very Sad Passing of Michael..You are all Foremost in our Thoughts and Prayers at this time.May the Sod Rest Lightly on Michael’s Gentle Soul..

Our deepest sympathy to Margaret, Nora , Deirdre, Finola, Stephen & Paul and to your families. We are so sorry to hear of Michael’s passing . We are thinking of you all at this sad time .    

Eddie & Carolann Horgan & Family, Ballybunion , Ireland. 

I never got to meet or know you. However, I send my deepest condolences, on behalf of myself and my family, to you and your lovely family. Continue to rest in the bosom of The Lord. Amen

I will always cherish my college summers spent working at Mayo, alongside my college friend Deirdre. Dr and Mrs. O''Sullivan and the entire family were always so kind and generous, welcoming me into their Rochester and summer lake homes.  My sincere condolences.    
Claudia Lucchinetti

Sincerest condolences to Aunt Margaret, Nora, Deirdre , Finola, Stephen and Paul and families on the occasion of Uncle Michael's passing - a legend in his time as we would say in Ireland. From Eoin, Sinead, Mary, Eadaoin, Fiona and Aoife Kelly. May he rest in peace.God bless.

Dear Margaret, Nora, Deirdre, Paul, Steve, Finola and the family. We are all so sad at Uncle Michael's passing and we send our condolences for your loss

Uncle Michael was a great man and always full of fun and song. He would have a great interest in what I was doing and always had words of advice and encouragement.

We will all miss his enthusiasm and larger than life personality. 

Our thoughts and prayers are with you from over here in Dublin.

Denis, Helena, Aisling and Orla

Dear O’Sullivan family,

I am so sorry for the loss of your husband, father and grandfather.   I will be forever grateful for the opportunity Dr O. and Jerry Wollner gave me to be part of the early MML family.  I recall with such fondness an early Christmas party at your Plummer Circle house and one of his famous “singsongs”.  We were a small group back then and every member of the team was invited.  Some of the songs were so funny and by the end he was laughing as hard as we were, even though I’m sure he had played them many times.   I recall the furniture in the large living room pushed out toThe edges and you, Margaret, teaching us the Irish jig. We were not good dance students.  There may have been a “wee bit of Christmas cheer” involved!! 

Dr O. made Lab Medicine and Mayo a better, brighter place by his presence and his leadership style. He lead with competence and with joy. His memory will live on in those he mentored and the careers he nurtured-including mine.

I’m so sorry to have to miss his service and the opportunity to tell you this directly.  

In Sympathy,

Sharon Dunemann

Dear Margaret, Nora, Paul. Steve, and Finola,

I'm terribly sorry for your loss.  The many years of old Irish memories remind me of all the ties that bind us together.  May God hold you in the palm of his hand during this time and rest assured Michael has already charmed his way into Heaven. 

With Love,

Fiona, Dan, Killian and Kellyn McKee 

My heart is heavy with sadness over the passing of a great man. My first experience at Spider Lake was as a guest of the O’Sullivans and my childhood was defined by countless wonderful evenings filled w song and love and always closing w Dr. O singing Danny Boy. I’m sure he’s up there now singing  it now and will forever be in my memory. My heart is with all the O’Sullivans at this time. Love, Hadley

To Margaret, Deirdra, Nora, Paul, Steve and Finola.

Our deepest condolences to you and your lovely family.  We will miss Michael so much.  He was so warm and gracious to the Moore family and welcomed us into your home so many years ago, with open arms, great cheer, great humor, wonderful meals, and happy songs.

We wish you all peace, strength, courage and love.  We are thinking of you all.

To Margaret and the entire family, please accept my deepest sympathy on Michael's passing.  Dr. O'Sullivan was very dear to me and someone who was kind and supportive in my career at Mayo.  I shall be forever grateful to him, and I can only imagine how much he will be missed.  Please know I will always remember him and he will always have a special place in my heart.  With deepest sympathy...Richard (Rick).

Dearest Maggie, Nora, Deirdre, Paul, Steve and Finola and family- There are no words to describe what Dr. O’Sullivan meant to me and my family. 42 years of knowing and loving your family. We will hold all of you in our hearts and prayers. So sorry for this great loss. Love always, Connie Rakela Dahlberg and Family 

Deidre and family, our heart-felt condolences are sent with the passing of your father. May you find joy in your memories with him, and solace in the care given by those surrounding you now. Peace.

Dear Finola and family of Dr. Sullivan,

Ally and I and all your friends at Jeremiah Program are thinking of you during this sad time. What an incredible man. The world was a better place for him in it.

Our condolences,

Liz 

To Margaret, Nora, Paul, Deirdre, Steve, Finola, and extended family ~

So many fond memories flood my heart of times spent with you all and Michael. He was an absolute light and joy to be around - a gift he and Margaret passed to their children.

I am thinking of you all and sending love.