Nicholas David Chamberlain was born on April 5th, 1963, in Boston, Massachusetts.  After returning to England with his parents, Dr. Chamberlain grew up in the countryside north of London.  In 1978 he returned to the U.S. and began his training in the Martial Arts the same year.  Following his Black Belt in Kenpo Karate in 1981, Dr. Chamberlain opened his first school in Chelmsford, Massachusetts, teaching American Kenpo Karate. In 1982, he was fortunate to begin training in Seven Star Praying Mantis and Eagle Claw under Master Lo Man Biu, in Boston’s Chinatown district, and continued until Master Lo’s untimely death six years later.

In 1984, after completing an apprenticeship with Shihan Rocky DiRico, Dr. Chamberlain was accepted as a student under Professor Nick Cerio of Providence, Rhode Island.  It has been Professor Cerio’s guidance that has been the driving force in shaping Dr. Chamberlain’s Martial Arts ever since.  In 1985, Dr. Chamberlain’s rank was recognized By Master Ed. Parker, under the auspices of the International Kenpo Karate Association (I.K.K.A.), which at that time was represented by Professor Cerio in New England. 

In 1997, Grand Master Cerio promoted Dr. Chamberlain to Fifth Degree Black Belt in both Nick Cerio’s Kenpo and American Kenpo Karate.  Dr. Chamberlain has trained under Master Ed. Parker in American Kenpo; Master Tadashi Yamashita in self defense; Professor Wally Jay and his son Leon Jay in Small Circle Jiu-Jitsu; Master P. Chan in Wah Lum; Master Rick Beauchamp in Wah Lum and Kenpo; Master Joe Lewis in Technique, Master Carlos Machado in Brazilian Jiu-Jitsu, and Martial Traditions and Bo under Fumio Demura, Shihan.  Dr. Chamberlain holds a 3^rd Degree Black Belt in traditional Heike-Ryu Jiu-Jitsu under the head of the system, Sensei Vince Tamura. 

Shihan Chamberlain also instructs Karazenpo-Go-Shinjutsu under the guidance of Bruce Corrigan of Tennessee, and the systems founder, Sijo Sonny Gascon of Hawaii.  He holds a 5^th degree Black Belt in this system.  In 1999, Dr. Chamberlain was invited by Master Al Tracy to teach Nick Cerio’s Kenpo at the first International Gathering of Eagles, the largest grouping of senior Kenpo masters in the world, held in Las Vegas.  He was again invited to teach at the second Gathering of Eagles, in August, 2001, where he was honored to teach in front of Chosei Motobu sensei, the son of the fabled Choki Motobu from Okinawa. 

In September of 2003, at the Dallas headquarters school, Dr. Chamberlain was promoted by Master Al Tracy to 8th Degree Black Belt.  The following year in 2004, "Nick Chamberlain's Kenpo Karate Studio" was renamed to "Chamberlain Studios of Self Defense", to better represent the range of material offered at the different teaching locations.  In 2006, he was invited to teach at Sijo Emperado's 80^th birthday, where he covered Gasan-Ryu Kenpo/Kajukenbo techniques.  On August 12^th, 2007, Dr Chamberlain was promoted to 1^st degree Black Belt (Shodan) in Kodokan Judo by Jim Webb, under the supervision of Vince Tamura, sensei.

In response to the horrific acts of violence against the United States of America on September 11th, 2001, he founded Fight Back America^TM, a 501(c)(3), Texas non-profit corporation.  The mission of Fight Back America is to provide Americans with the knowledge, training and skills they need to protect themselves, information is available at www.FightBackAmerica.info.

In 1992, Dr. Chamberlain received his Bachelor of Science in Business Administration with a concentration in Finance, from the University of Massachusetts. In 1996 he received his Doctorate in Chiropractic and a concurrent Bachelor of Science in Human Anatomy, from Parker College of Chiropractic, in Dallas, Texas. He is a licensed Emergency Medical Technician (EMT), and is taking post doctoral studies in orthopedics, rehabilitation and pain management. Dr. Chamberlain is in private practice in north Dallas, Texas, with his wife Dr. Kimberly Jones at their office: 21st Century Chiropractic and Rehab. He concentrates his practice in the areas of work, sports and automobile related injuries. Dr. Chamberlain is a former adjunct Professor at Brookhaven College in Farmers Branch, Texas. In addition to teaching, Dr. Chamberlain is active in the martial arts through local karate events, seminars and tournaments. He is the former team doctor for the Christian Wrestling Federation.  He is an avid chess player, scuba diver, and traveler when time permits.