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One Tree's staff all believe in the value of the martial arts and are practitioners themselves. Our instructors have shown proficiency in the martial arts as well as in the ability to teach martial arts techniques and concepts. Our instructors are required to go through a rigorous instructor training phase including hundreds of hours of supervised teaching and team teaching. More about our Instructor Certification Program here.



Master Buchholz, our school's founder, was born in Eau Claire, Wisconsin. He has studied many martial arts beginning his training with the Korean arts of Taekwondo and Hapkido. He has also trained in the Northern Shaolin, Southern Hung Gar and Wing Chun Kungfu styles as well as Tai-Chi, Shuri-Ryu, Jui-Jitsu, Kobudo and others.

Master Buchholz has worked as a law enforcement officer in Colorado and Wisconsin. He studied police and military defensive tactics, narcotics interdiction, as well as SWAT, anti terrorism and hostage negotiations. On the street he has put these tactics along with his martial arts techniques to the test and found them to be very effective.

In the past Master Buchholz has worked extensively with inner city youth and juvenile delinquents and their families in Wisconsin, Indiana and Colorado. He has received several awards for his work including recognition from the Honorable Judge Payne of the Marion County (Indianapolis) Juvenile Court System. He also received three United States Congressional Records for spent time in Moscow, Russia working with youth and teachers, and in 2013, Master Buchholz was inducted into the U.S.A. Martial Arts Hall of Fame.

It was in 1998 that Master Buchholz returned to Wisconsin and shortly after began One Tree Martial Arts. Since that time One Tree Martial Arts (OTMA) has grown to become a major learning center for the martial arts with programs in the Korean, Japanese and Chinese arts.

Master Buchholz' philosophy of teaching is to exhaust his knowledge of martial arts to any student who has a desire to learn and to diligently apply him or herself to their study. Master Buchholz often quotes, "a teacher can show the student a door, but the student must walk through it". Master Buchholz is dedicated to teaching the martial arts based on a strong foundation of positive character to ensure that the student will always use his or her skills in a proper way.

Master Buchholz encourages anyone who has even the slightest interest in any aspect of the martial arts to inquire about training at our school. The rewards will always be greater than anticipated.

To contact Master Buchholz, click here master@otma.net



Head Instructor Kempf began his martial arts training at OTMA in 2003. Since then he has diligently trained and gained a reputation as an expert fighter. He currently holds a third degree black belt and has been teaching at OTMA since 2008. Besides teaching Hapkido and Taekwondo at the Eau Claire dojo, Instructor Kempf has had the opportunity to travel and teach special classes across the state and even overseas as well as instruct at the Eau Claire MEPS (Military Entrance Processing Station).

To contact Instructor Michael, click here michael@otma.net



Head Instructor Lam began his martial arts training at One Tree Martial Arts in 2005. Over the years, he has worked extensively at developing his knowledge of the martial arts through principles and applications.

Mr. Lam began teaching at the Eau Claire dojo in 2008. Since that time, he has been an instructor in our main martial arts programs, children's programs and has taught numerous hapkido and self defense seminars.

In 2010, he brought his knowledge to Madison and started a small Madison dojo. While in Madison, he has worked closely with Master Buchholz to help with the growth of One Tree Martial Arts. He currently travels back and forth between the Eau Claire and Madison dojo. Besides teaching, Instructor Lam is currently working towards his Bachelor in Business degree in Actuarial Science and Risk Management at University of Wisconsin-Madison.

To contact Instructor Patrick, click here patrick@otma.net



Dondi Hayden started training in the martial arts at the age of 38. In 2002 she tested for a black belt in Kickboxing under the instruction of Mike Lind. Dondi's drive to continue her journey in the Martial Arts drove her to obtain another Black belt in Hapkido and Taekwondo under the instruction of Master Buchholz in 2008.

The martial arts have given Dondi a lot of confidence in herself. She says she has felt more empowered and stronger both physically and mentally and that these benefits are something she wants to pass on to other women. She calls it finding there warrior within! Dondi has been teaching Hapkido and Taekwondo and has started an exciting Women’s Kickboxing program at One Tree.

If you are interested specifically in Dondi's Women's Kickboxing Program, contact her at dondi@otma.net



Mr. Vokal began his martial arts study at OTMA in 2009 and, from the start, became a very dedicated student. Over the years, he has earned a reputation within the school as a powerful and fast martial artist who enjoys helping other students learn proper form and execution of techniques. After observing Cole in action, students are inspired to be like him in their practice. When not in the dojo, Cole is also a student and enjoys free running in his time off.



Mr. Leonard began assisting in teaching the children's classes in 2011. "Master Jacob" as the kids call him, began training in that class himself at age five and set the goal of receiving black belt. Five years later, in 2010, he attained that goal, having worked half of his young life to do so. It's this dedication and tenacity he would like to pass on to the younger students he now works with. This remarkable young man consistently inspires the young martial artists as they strive to "be like Master Jacob".



Angelica's bio coming soon...



Lisa is One Tree Martial Art’s Enrollment and PR Coordinator. She is also a student at OTMA and passionately learning both Taekwondo and Hapkido.

Lisa has degrees in Psychology and her Master’s in Business Administration. She has worked in the Higher Education field as a college Instructor for the past 4 years and in the health/fitness arena for the past 3 years as a group fitness instructor and Wellness coach.

Lisa has consistently and successfully consulted and developed businesses for the past 15 years. She is a people person by nature and loves helping people and developing life-long relationships.

If you are interested in scheduling a free tour of the One Tree Martial Arts facility and having all your questions answered in person, contact Lisa directly by emailing her at lisa@otma.net.


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