Callahan’s Karate Studio has classes in Bedford, perfect for kids, teen, and adult martial arts lessons.
Since we’ve opened, we’ve been dedicated to changing the lives of people one person at a time, through martial arts, education and coaching. We strive to provide a safe, comfortable and welcoming atmosphere for all students and family members. We take pride in creating an environment for individuals to achieve, develop and succeed in their personal goals.
We strongly believe that martial arts can be for everyone, regardless of age, gender or experience levels. Throughout all of our programs, students will not only learn the necessary skill sets to protect themselves, we stand behind our realistic and practical approach, confident it will enable every member to achieve greatness and live their best life..
Get To Know Our senior Instructors
Mr. Callahan is a native of Bedford and has co-owned and operated Callahan’s Karate since 1994 with his wife, Winnie Callahan. Mr. Callahan is an 8th Degree Black Belt in Kenpo and a long time student of Tenth Degree Kenpo Grand Master Eliud Sanchez of Vernon, CT. With 36 years of experience, Mr. Callahan has helped thousands of students achieve success in martial arts, as well as help them make positive lifestyle changes through their training.
Mrs. Callahan is a Seventh Degree Black Belt in Kenpo. She is also a Senior Instructor and has been teaching at all age levels for more than 29 years. She has extensive tournament competition experience from the 1990’s in both Kenpo forms and fighting. In addition to her role as an Instructor, Mrs. Callahan manages community outreach for Callahan’s, including special self-defense workshops and programs.
Mr. Clements is a 6th Degree Black Belt in Kenpo and a Senior instructor. He has been a full-time member of the Callahan’s team since 1997. As the primary Instructor for Mini and Little Dragons, Mr. Clements is known for his unparalleled patience while teaching young children. He also has an extraordinary ability to work with students of all age groups and those with special needs.
Mr. G is a 6th Degree Black Belt in Kenpo and has been a full-time team member since 2000. Mr. Gonzalez has a tremendous ability to inspire and connect with his students, bringing out the best in them. He encourages and inspires his students to strive for excellence but provides a great balance of hard work and fun in the classroom.
INSTRUCTORS
Robert Ackerman has been training at Callahan’s Karate since 2001 and is a Fourth Degree Black Belt in Kenpo. Rising through the ranks from a “Tiny Tiger” at age 3 to becoming an instructor in 2014. Mr. Ackerman is a multi-talented instructor who does classes, camps, private lessons, birthday parties, as well as local community programs. Mr. Ackerman has earned a Bachelor’s Degree in Elementary Education and a Master’s of Education in Special Education from Endicott College in Beverly MA; he implements these skills as a Grade Five Math and Science Teacher at Chenery Upper Elementary School in Belmont MA. He enjoys bringing his enthusiasm to classrooms and karate students at every age and ability level. With additional training under world champion martial artists, Mr. Ackerman uses the skills he learned to also instruct our leadership team in performance-based martial arts. He is most notably known for his skills with the double sword. He has competed at national tournaments since 2015 and enjoys challenging himself alongside the world’s best. His sense of community has also led Callahan’s in the “Breaking Through ALS” Challenge for ALS, raising over $17,000 over five years. Finally, he is often found behind the lens of a camera, using his photography skills to produce professional content for our social media and website.
Ms. Attardo has been training at Callahan’s Karate since 2008 and is a 3rd Degree Black Belt. She is attending Middlesex Community College, majoring in Early Education. Ms. Attardo is currently living in Orlando, Florida completing the Disney College Program where she will be working at the Magic Kingdom!
Mrs. Hewage (formerly Ms. Callahan) is a Fourth Degree Black Belt in Kenpo and has been teaching kids of all ages for 15 years. She began her karate training as a junior student in 1994 when her parents opened Callahan’s Karate. She worked her way up through the ranks and started helping out in classes as a young teenager on the Leadership Team. She received a Bachelor’s Degree from Berklee College of Music while pursuing Music Education, then later went on to teach English as a Second Language in Thailand where she lived for 2 years and did some training in Muay Thai Kick Boxing. After returning to the states in 2018, Mrs. Hewage rejoined the team at Callahan’s. Along with teaching many kids classes, private lessons and introductory lessons, Mrs. Hewage creates Callahan’s Character Development Program, a monthly positive message that students learn about at the end of each class. In 2021, she completed a Graduate certificate program in Applied Behavior Analysis from UMass Lowell, then became a Behavior Change Specialist through NASM and a certified Health and Wellness Coach through AFPA. She continues to contribute her knowledge of behavior change and habit development to her teaching.
Mrs. Jewer, BS Leadership, first started training at Callahan’s Karate in 2013 and received her Third Degree Black Belt in 2023. Shortly after receiving her First Degree Black Belt, Mrs. Jewer joined the Instructor Team in 2018. In early 2019, she accepted a position at Callahan’s Karate where she will be able to alternate time between teaching on the mat and administration/project management to improve processes and elevate our customer’s experience.
Mr. Mola has been training at Callahan’s Karate since 2010 and is a Fourth Degree Black Belt in Kenpo. Mr. Mola joined the Instructor Team in 2017 and has been helping to train both children and adult students. He most appreciates the intricate style and purpose found in American Kenpo forms, and finds teaching to be one of the most rewarding things he’s done.
ASSISTANT INSTRUCTORS
Mr. Iverson has been training at Callahan’s Karate since 2011 and is a 3rd Degree Black Belt. He is a member of the class of 2027 at Trinity College in Dublin.
Ms. Vinh has been training at Callahan’s Karate since 2010 and is a 3rd Degree Black Belt. She is a member of the class of 2024 at Bedford High School.
Mr. Isabelle has been training at Callahan’s Karate since 2012 and is a 2nd Degree Black Belt. He is a member of the class of 2025 at Bedford High School.
Ms. Liu has been training at Callahan’s Karate since 2015 and is a 2nd Degree Black Belt. She is a member of the class of 2025 at Bedford High School.
Ms. McIntosh has been training at Callahan’s Karate since 2011 and is a 2nd Degree Black Belt. She is a member of the class of 2025 at Concord Academy.
Mr. Herbster has been training at Callahan’s Karate since 2014 and is a 2nd Degree Black Belt. He is a member of the class of 2025 at Concord-Carlisle High School.
Ms. Sandler has been training at Callahan’s Karate since 2015 and is a 2nd Degree Black Belt. She is a member of the class of 2026 at Bedford High School.
Ms. SIlver has been training at Callahan’s Karate since 2017 and is a 1st Degree Black Belt. She is a member of the class of 2026 at Bedford High School.
Honorary Staff
Gryffin The Dog Callahan has been training at Callahan’s Karate since 2020 and is a 1st Degree red leash. He the official mascot of our instructor team and is well loved by all.