About Us

Kaizen Karate was founded by Coach V in 2003.  Kaizen Karate has been offering instruction in non-traditional Tang Soo Do as part of its core curriculum.  Over the past few years, American Kenpo has also been introduced into the system.  Kaizen Karate's team of highly trained martial artists offer a number of programs for students starting as young as 3.5yrs old up to adult.  They focus on discipline and encouragement in a fun-loving environment.  Their main goal is to help everyone progress, continually improve, and enjoy the process.

In 2014, Kaizen Karate expanded to include Kaizen Run Club & Kaizen Athletics.  All youth & adult programs now fall under the Kaizen Fitness umbrella.  Kaizen Fitness now operates 7 days per week throughout Maryland, Washington D.C., and Virginia.

Our Team

Viran Ranasinghe  (Head Instructor)

“Coach V” has 30 years of experience in the martial arts, having spent the majority of his life committed to the trade. He began his journey with karate at five years old and earned his first black belt in 1998 through Hill's Hitters Karate and Master Instructor Dr. Phillip Hill. Coach V went on to earn his business degree at the Robert H. Smith School of Business at the University of Maryland in College Park. Coach V continues his training in Kenpo under 6th Degree Black Belt Sifu Greg Payne who also holds a 5th degree black belt in Shotokan as well as many other black belts in other arts including Goju ryu & Judo.  In 2014, Coach V earned his second black belt in IKCA Kenpo under Sifu Greg Payne and the supervision of Senior Grandmaster Chuck Sullivan and Grandmaster Vic Leroux.  In 2017, Coach V was promoted to 6th degree black belt in IKCA Kenpo by Senior Grandmaster Chuck Sullivan who is a direct student of Ed Parker.  Coach V also studied Aikido at the ASU headquarters overseen by Saotome Sensei, Shihan who is one of the original students of Aikido's founder Morihei Ueshiba (O Sensei).  In his free time he enjoys running local long distance races which most recently included the Cherry Blossom 10 miler, Rock 'n' Roll 1/2 Marathon,  & Marine Corp Marathon in Washington, DC.

Chris Marr  (Instructor) 

Chris Marr is a 5th degree black belt with over 15 years of martial arts experience and over 10 years of instructional experience. He has trained in various disciplines, including: Karate, Kung Fu, and Boxing, and has also studied the history of Asian martial arts  

Tiffaney Dildy (Instructor)

Coach Tiffaney started her martial arts journey at Old Dominion University. She holds a first degree brown belt in the Dai Nippon Butoku Kai (DNBK) under Sensei Hiroyuki Tesshin Hamada. In 2010, she joined Kaizen Karate to continue her training and earned her Black Belt in December 2012. Her goal is to continue growing as a martial arts student and build Kaizen Karate's Virginia programs.  Coach Tiffaney is also a Certified Personal Trainer (NFPT), Group Exercise Instructor (AAAI-ISMA) and TABATA Instructor under Mindy Mylrea.  Coach Tiffaney currently holds a 4th degree black belt with Kaizen Karate.

Zach Knox  (Instructor)

Training since 1987, Zach Knox holds black belts in Tae Kwon Do and Hap Ki Do. Over the years, he has training in different arts such as Kung Fu, Shorin Ryu and Goju Ryu Karate, Kickboxing, and Escrima. In his time away from teaching and training, his hobbies include acting, directing, producing, football, hiking, screenplay writing, reading, boxing, and rock climbing. 

Steve Schwartz  (Instructor) 

Steven Schwartz, MD took his first Karate class in 1975. With 7 years of dedicated training since the late 1980’s he holds first degree brown belts in Shotokan and Shin Sei Ryu. He has also had experience in Aikido and bojitsu. He joined Kaizen Karate in 2008 and earned his black belt in 2010.  Steve currently holds a 3rd degree black belt with Kaizen Karate.  As a practicing Family Physician in Montgomery County and faculty at the Georgetown University School of Medicine he brings a unique perspective of health and knowledge of anatomy and physiology to the Kaizen Karate Team. Coach Steve also enjoys biking and yoga.

David Matusow (Instructor)

Inspired by the original hit movie 'The Karate Kid', David Matusow began his martial arts journey in 1988.  He earned his first blackbelt in Tae Kwon Do in 1993 under the supervision of 9th degree Master Jae Kim.  David earned his second blackbelt in Tang Soo Do from Kaizen Karate under the instruction of 6th degree blackbelt Coach Viran Ranasinghe (Coach V).  In 2017, David earned his third blackbelt in IKCA Kenpo under Coach V and the supervision of 10th degree blackbelt Senior Grandmaster Chuck Sullivan.  David currently holds a 1st degree blackbelt in Tae Kwon Do, a 4th degree blackbelt in Tang Soo Do, and a 3rd degree blackbelt in Chinese Kenpo.  David has 2 children, both of which are also blackbelts in Kaizen Karate. An accomplished triathlete, David has competed in numerous races of all distances, and is a 3-time Ironman triathlon finisher.  A Software Engineer at NASA, Coach David also enjoys playing tennis, competing in duplicate bridge, and is a skilled home barista.