Timothy Duffy is the founder and President of Mobile Mohs, Inc., the first portable Mohs laboratory in the United States. Mr. Duffy pioneered several frozen section techniques that allow for quicker and more versatile tissue processing. Mobile Mohs’ existence has provided Dermatologists the opportunity to treat their patients, in-house, without the need to build out space for a permanent laboratory.  

Prior to forming Mobile Mohs in 1979, Mr. Duffy spent three years as Laboratory Manager at the largest Dermatology Group in Orange County, which was one of the first practices to perform Mohs Micrographic Surgery in California. In this position, Mr. Duffy set up and managed the group’s Mohs, paraffin histology, and clinical chemistry laboratories.

Before starting his business career, Mr. Duffy proudly served his country as a member of the United States Army, seeing active duty in the Republic of Vietnam, where he served as an infantryman. He received the Bronze Star Medal with “V” Device for heroism and was awarded the Air Medal with Oak Leaf Cluster for Meritorious Achievement while participating in aerial flight. He also received the Purple Heart award for wounds received in battle.

Mr. Duffy holds a Bachelor of Science degree in Medical Microbiology from California State University, Long Beach and is a graduate of Mater Dei Catholic High School in Santa Ana, California. He has more than 40 years experience in Mohs and paraffin histology, held a lab staff position with, and has been a contributing author to several newsletter publications of the American Society for Mohs Surgery (ASMS). Tim has been a consultant for many private practices, universities, and major medical groups. Mobile Mohs, Inc. has participated in the Blade and Light Society’s international training of Mohs Surgeons and histotechnicians in developing countries.

Tim Duffy is a member of the American Society for Mohs Histotechnology, American Society for Mohs Surgery, and National Society for Histotechnology. Mobile Mohs, Inc. is a certified Veteran Owned Business.

Mr. Duffy and his wife Kathleen, their five adult children, and growing number of grandchildren all reside in Orange County, CA. He is active in his Church, Catholic Detention Ministries, and various local charities and ministries.