Meet Our Team of Qualified Brokers, Representatives and Consultants

When you are ready to sell or buy your dental practice, working with someone who knows your profession can make all the difference. Western Practice Sales / John M. Cahill Associates has provided quality brokerage services to healthcare professionals for more than 30 years. We are owned by dentists, so we understand your professional needs…our standards are the same as yours! Western Practice Sales / John M. Cahill Associates is the only brokerage firm that represents sellers and locates buyers throughout California, Arizona, and Nevada from one central office. As a brokerage team, we are committed to the highest level of professional excellence and customer service. Our brokers offer dentists some of the best credentials, contacts, and expertise in the industry today and our network of specialists, such as accountants and attorneys, help your selling or buying process.


Western Practice Sales is a Proud Member of ADS Dental Transitions.

Timothy G. Giroux, D.D.S.


Hailing from the greater Chicago area, Dr. Tim Giroux established his own dental practice in Scottsdale, Arizona, upon graduation from Creighton University, School of Dentistry in 1983. Relocating to Northern California upon selling his highly successful practice after 15 years, Dr. Giroux brings a unique perspective and personal experience in dental associateships, practice start-up, sales, and workback situations to serve and assist you during your exciting transition! Establishing their new home with their two children in Northern California, Dr. Giroux and his wife, Mona Chang, enjoy golf, snow skiing, water skiing, and ice hockey.

Jon B. Noble, M.B.A.


One of the original Founders of Western Practice Sales, Jon Noble received his M.B.A. from California State University, Chico. He adds not only a wealth of knowledge and professional expertise but also more than 25 years of experience and involvement in over 600 transitions! Jon, his wife and 2 sons are avid Kings’ and Giants’ fan and partake in the perennial recreational activities of fishing, snow and water skiing. Jon especially enjoys the opportunity to facilitate the smooth and successful transition of dental practices by consulting or brokering.

John M. Cahill, M.B.A.


John Cahill is nationally known as one the country’s premier transition specialists. A member of American Dental Sales, a regular contributor to Dental Economics and a frequent featured speaker for many dental groups over the years, he brings knowledge, experience and integrity to the transition process with more than 35 years of experience in the dental industry.

Edmond P. Cahill, JD


Ed Cahill received both his accounting and law degrees from the University of San Francisco. His strong background in banking and accounting firms complements his prior experience as a mediator. Ed’s wide range of knowledge, hands-on experience and outstanding people skills allows him to connect with both the Seller and Buyer, helping to create a smooth transition environment.

Mona Chang, D.D.S.

After graduating from Loma Linda University in 1984, Dr. Mona Chang joined her husband's dental practice in Scottsdale, Arizona. After 15 years, she and her husband, Dr. Tim Giroux, sold their successful practice and relocated to their new home in Northern California. Teaming up with her husband again at Western Practice Sales, Dr. Chang brings a refreshing perspective as a female Asian dentist to serve and assist sellers and buyers during their transition. She shares her family's passion for a variety of sports, including ice hockey, water skiing, snow skiing, and golf.

Jeffrey J Tonner, JD

Arizona Representative

Jeff Tonner is an Arizona attorney and dental practice broker. For over twenty years, he has limited his law practice to helping dentists preserve their reputations. Jeff has published two risk management books for dentists, lectured throughout the west and published numerous articles. Including a dental attorney to your broker team adds a singular advantage to Western Practice Sales.

Jared A. Bergquist

Dedicating his professional career to the dental industry, Mr. Bergquist has been able to channel his passion for the industry working with Western Practice Sales. The dental community looks to him as a trusted source to advise them on their dental practice's viability for over 10 years now. Jared is asked to speak at dental events regularly and is proud to support the local dental societies. He is the proud father of 5 children and enjoys playing indoor soccer, basketball and hiking his local Red Rock trails.