Thomas A. MacCarthy
June 2, 1970 ~ November 3, 2023
Born in:
Wimbledon, England
Resided in:
East Setauket, New York
Thomas A. MacCarthy was born June 2nd, 1970 in Wimbledon, England to Guadalupe and Gerald MacCarthy. He resided in East Setauket with his loving wife, Alejandra Alvarez-Morales. Thomas was a loving father to Gabriel and Lucia and he was a caring brother to John Philip and his wife Cristina. He is missed by his beloved aunts and uncles John, Mary, Annie and Tom and all his cousins. He was very loved by his mother-in-law, Miriam Morales, and Brother-in-law Carlos Alvarez and his wife Carla and by his nephews Claudio and Gonzalo. He is missed by his uncle John and his cousin Jane. He was a dedicated and loved professor at Stony Brook University that has touched many lives. Thomas passed away on November 3rd, 2023 in East Setauket, NY.
A memorial visitation will be held on Friday November 10th, 2023 at Branch Funeral Home of Smithtown and a Mass will be held Saturday November 11th, 2023 at 10:45 AM at St. James R. C. Church in Setauket, NY.
To view livestream for Mass, please click the link below:
https://vimeo.com/event/3863322
In Lieu of Flowers, Family Requests all Donations to be made:
To the charity link below to the Nassau Suffolk Autism Society of America in honor of Thomas MacCarthy.
Services
Visitation: Friday, November 10, 2023 2:00 pm - 4:00 pm
Branch Funeral Home Smithtown
190 E. Main St.
SMITHTOWN, NY 11787
Visitation: Friday, November 10, 2023 7:00 pm - 9:00 pm
Branch Funeral Home Smithtown
190 E. Main St.
SMITHTOWN, NY 11787
Mass: Saturday, November 11, 2023 10:45 am
St. James R. C. Church, Setauket
Route 25 A & Ridgeway Ave,
EAST SETAUKET, NY 11733
View current weather.
Charities
The family greatly appreciates donations made to these charities in Thomas A. MacCarthy 's name.






I was fortunate to have Professor MacCarthy as an instructor for my courses. He was incredibly kind and supportive, offering me help whenever I asked. I am heartbroken to have heard of his sudden passing, and I send my deepest sympathy to his family.
Tom was simply the nicest guy you could ever imagine having as a colleague. His expertise spanned areas of computational and statistical modeling in biology, particularly in immunology, evolutionary systems, and, most recently, computational virology. He has been a beloved colleague, teacher, and mentor to a diverse set of students, at all levels, from high school, through undergraduate and PhD. Tom never turned down an opportunity to serve the campus and never backed down from a challenge. He will be sorely missed.
I was extremely fortunate to have Tom as a professor in undergrad and then again as a grad student. His classes were fascinating and amazingly taught. I looked forward to every class. I was even more fortunate to have him as an advisor and mentor when I joined his research team studying Pancreatic cancer. In the few short months we worked together, we accomplished a tremendous amount and I learned so much from him that I will never forget. He undoubtedly impacted my future academic and life path for the better. I couldn’t be more thankful for his influence. On our drive down to Boston for a conference we talked about everything, and throughout it all the deep pride he had for his students’ research and his everlasting love for his family was exceptionally apparent in all the best ways. His amazing guidance, exceptional teaching, and overall good-naturedness will be greatly missed. My heartfelt condolences to his family.
Victor y yo te acompañamos en tu pesar. Que Dios lo reciba en su santa gloria y que tu hijo descanse en paz. Nuestras oraciones para ustedes que lo recordarán siempre y que les hará una enorme falta en su vida.
Professor MacCarthy was teaching a class I’m currently taking and I remember him saying just this past Thursday that we’ll be meeting on Zoom next week since he’ll be traveling. His sudden passing has really shocked me and left me heartbroken. He was a very knowledgable professor and devoted his time to every student. Though I only knew him for two months, he really left a strong impact on me. My condolences to his family and friends.
I knew his late father better than Thomas as I was a student of the Lancaster school in Mexico city. But I am still devastated to hear of such a loss it just to his family and friends, but also to anyone that met him. May he rest in peace
Acompañándolos con todo mi cariño. Una velita para Thomas en su camino.
I am so very sorry to hear of Tom’s passing. I only got to spend some time with him on a few occasions over the years but each one was a real treat. Tom struck me as one of those rare people who are instantly and completely likeable – so much so it’s almost impossible to imagine someone meeting him and not liking him. He was kind, he was generous, he was great fun and he wore his considerable intelligence lightly. Myself, Mairead and Sadhbh got to spend Easter Sunday of last year at the house in Long Island with Tom, Ale, Gabriel and Lucia, and we will now always remember that wonderful day of terrific Mexican food and great conversation with much fondness. Deepest condolences to Ale, to Gabriel and Lucia, and to all the other MacCarthys. We are sorry to be missing the services but will be sending love from Dublin xxx
That’s really lovely Hugh.
I am very shocked and saddened to hear about Tom’s sudden passing. He is gone way too soon. As the graduate program coordinator for Applied Mathematics and Statistics, I work closely with many of our faculty. He was always so kind and professional and a pleasure to work with. He will be greatly missed. My condolences to his family, friends and colleagues.
Tom was a thoughtful and kind colleague, a resourceful and intelligent collaborator, and in the couple of years we worked together, I felt we were becoming friends. I will miss him as colleague, collaborator and friend, and my thoughts are with his family and those he mentored. He is sorely missed.
Rest in peace 🙏 my condolences for my friend Alejandra and family.
Mi mas sincero pesame a la familia McCarthy. Tom fue un gran colega y una gran persona. Descansa en paz, Tom.
May you rest in peace.
Thomas, May you rest in peace. Amen
Mis más sincero pésame para la familia MacCarthy.
Descanse en paz Thomas.
It’s hard to even articulate how saddened and shocked I am to hear this. He was one of the first professors I interacted with at Stony Brook and I honestly don’t know if I would be on the same research trajectory without him. My time in his courses (ALL of his courses) as an undergrad and fledgling grad student feel almost like a past life, but I can still distinctly remember his smile and enthusiasm (whether for biology or programming logic gates in the early days of Minecraft). I will miss him dearly.
Tom is such a wonderful person and colleague.
We will miss him very much ……
To all the loved ones of Tom:
Please take good care of yourselves ……
Dear Tom’s family and friends,
I am a colleague from Canada who collaborated with Tom on several projects. We collaborated quite closely in the last 4 years and I got to know Tom as a very capable and smart researcher, but also the most generous and kind person I could ever hope to work with. Through Tom I met many other colleagues who have enriched my work. I have no words to express how enriched he made my professional life, and how his kindness and generosity impacted me in my personal life. I will miss my dear colleague, collaborator, and friend, and I wish him all the best in the next phases of the journey till we meet again!
Tomas touched many hearts, in his own way and at his time. We are certainly going to miss him.
Godspeed, dear Tomas.
Querido Tomás, desde que te conocĂ, siempre me pareciste un tipazo, y me pareciĂł lo máximo que salieras con mi mejor amiga. Cultivaste en todos nosotros tu amistad con cultura y buen humor con tu muy particular forma de ver las cosas. Formaste una hermosa familia con respeto y dedicaciĂłn. Vi en ti y en Ale como pareja, una hermosa relaciĂłn basada en el respeto, la tolerancia, el amor, la reciprocidad y el trabajo en equipo, que considero una gran enseñanza y ejemplo.
Lamentablemente, te nos fuiste de este plano terrenal, pero vivirás por siempre en nuestros corazones y en nuestros pensamientos. Quiero pensar que algĂşn dĂa nos reuniremos de nuevo, como antaño y disfrutar de momentos tan maravillosos como los que compartimos. Espero que cuando eso pase, tu cocines, si quieres, yo llevo el vino o las chelas. Descansa en paz querido Tomás.
Dear Alejandra, I am so deeply sorry for your loss. Love and peace, Janet Leatherwood and family
No tuve el gusto de conocer a Tomás en persona, solamente a travĂ©s de lo que Ale nos contaba. Tengo el gusto y privilegio de conocer a Ale desde que tenĂamos 13 años y se perfecto la gran mujer que es. Se tambiĂ©n que ella solo eligirĂa como compañero de vida y padre de sus hijos a un ser increĂble como lo fue Tomás. LamentĂł su pĂ©rdida amiga y los acompaño a la distancia.
Queridos Ale y Thomas, ser testigo de su enamoramiento, amor, creaciĂłn de una increĂble familia ha sido maravilloso! Esa huella queda en mi corazĂłn… Thomas, sigue tu camino, ve en paz, no serás olvidado, eres muy querido… en mi mente te quedas bailando en una discoteca y riĂ©ndote a carcajadas hasta cerrar los ojitos echando la cabeza para atrás y tambiĂ©n mirando interesadamente a Ale contar una introspecciĂłn, aquĂ te la cuidamos y abraza de mi parte a Mr MacCarthy… love you
Querido Thomas, te vamos a extrañar mucho, dejas un vacĂo muy grande, fuiste un gran amigo, nos reencontramos donde no hay dolor, al final del infinito, entre los Rios de color pĂşrpura.
Querido Thomas, te vamos a extrañar mucho, dejas un vacĂo muy grande, fuiste un gran esposo, padre hermano y amigo, nos reencontramos donde no hay dolor, al final del infinito, entre los Rios de color pĂşrpura.
Tom and I were office neighbor since he joined our department. Both of us came to office almost everyday and saw each other everyday. When we got tired from working, we came to the hallway and had a chat to relax. Tom was always smiling and gave interesting comment on lots of things. I will miss him deeply.
I was shocked and deeply saddened to hear of Tom’s tragic and unexpected passing. When I first arrived at Stony Brook as an assistant professor in the CS department, he immediately connected with me, welcomed me, and helped to make me feel comfortable in my new academic home. It was always a pleasure talking science with Tom, and learning from him. Even after I moved to another university, I would run into Tom at the Cold Spring Harbor meetings, and was happy to have a chance to catch up with him. He was always so kind and generous, and set an example of not just how to be an excellent scientist, but a great person and a true family man. You’re sorely missed and well-remembered, Tom. May his memory be a blessing.