Dennis J. Geiger

Dennis J. Geiger of Mahopac, NY passed away peacefully on April 1, 2023 at the age of 76. He was born on March 29, 1947 in Yonkers, NY; son of the late Joseph and Catherine (ne Wixon) Geiger. On April 18, 1970 he married Joan O'Donnell at St. Denis Church in Yonkers and they were blessed with 3 sons, Dennis Jr, Brian, and Jeffrey.
Dennis was a 1965 graduate of Yonkers High School. He received his Bachelor of Science Degree at Manhattan College and attained his Master of Science Degree at Iona College. He taught Biology and Advanced Placement Biology at Cardinal Spellman for 10 years while also coaching basketball. After that he continued teaching at Walter Panas High School for the next 30 years. While at Panas he was chairperson of the science department and head coach for both the JV and Varsity basketball and volleyball teams. During that time he accepted the League Coach of the Year award for Panas girls basketball. Along with his many accomplishments in the field of education and sports, he also received an award from the Skylab Science Project.
Locally he was president of the Mahopac Sports Association, where he coached baseball, basketball and soccer. He also coached the St. Johns the Evangelist CYO basketball team. Dennis loved sports so much, he used his summer breaks from teaching to continue coaching summer baseball camps.
Among his many interests, Dennis played golf with his friends and family. He enjoyed traveling with his wife to many places including Europe and Mexico. He especially loved visiting Disney World with his children and grandkids. In the spring and summer you could always find him in the yard mowing the lawn, tending to his plants, and gardening. Dennis took great pride in maintaining his home both inside and out. He was the ultimate do-it-yourselfer.
Dennis is survived by his loving wife Joan, son Dennis, Jr., son Brian and his wife Susan, son Jeff and his significant other Claudia, grandchildren Adam, Catherine, Gabriella, Matthew, and Leah; his sister Diane Felipe and her husband Joseph, and many nieces and nephews. He was predeceased by his brother Donald.
All are welcome to attend a visitation on Friday, April 7th from 1-3pm and 6-8 pm at the Joseph J. Smith Funeral Home in Mahopac, NY. A Mass of Christian Burial will be celebrated on Monday, April 10th at 10 AM at St. John The Evangelist Church, also in Mahopac. Interment will follow at Ballard-Barrett Cemetery in Mahopac Falls.
In lieu of flowers, please make memorial contributions in his name to St. Jude Children's Research Hospital. Mail to: ALSAC/St. Jude Children's Research Hospital, 501 St. Jude Place, Memphis, TN 38105.