About Us

At Green Sail Transitions we know and understand dentists. We have worked in the dental practice sales industry for a combined 90 years, and have built strong relationships based on trust and the highest level of integrity. You can be assured that your interests are paramount to us.

Green Sail Transitions specializes in connecting Dentists who want to buy a dental practice and Dentists who want to sell their dental practice by integrating our tremendous network of contacts and relationships.

We can assist with:

  • Practice sales
  • Practice mergers
  • Practice appraisals
  • Retirement Planning
  • Partnership agreements
  • Associate placements

Management Team

Since 1981, doctors have trusted their dental practice transitions to us. With over 90 years of combined experience, Green Sail Transitions can help you transition into or out of your dental practice. Our founders are uniquely positioned to assist you in planning and executing a transition that fits your individual business situation.

John Van Leeuwen, CFP®

President & Co-Founder

John Van Leeuwen is a Certified Financial Planner professional with over 27 years of experience. During is career as a financial advisor for dentists, John advised dentists on all aspects of their personal and practice financial planning including: retirement, tax, estate, investment, cash flow and debt management. He was the founder and President of IPA Dental Financial Planning, a Portland firm, from 1994 through 2005. In 2006 John orchestrated a merger of IPA with The Partners Group where he acted as a Senior Vice President and Director of Dental Practice services and Wealth Management. John is a regular speaker at the Oregon Health Sciences University School of Dentistry, as well as regional and national dental and medical events. He has been published in dental magazines on topics such as debt management and successful investing and wealth building.

He is a co-founder of Life and Practice Transitions, and presents at seminars on the financial aspects of selling a practice including at various events including the Oregon Dental Convention in 2011 and the Hawaii Dental Convention in 2012. John is also a member of the Business Advisory Board for the OHSU School of Dentistry and served on the Portland Metropolitan Business Leadership Council for the Oregon Community Foundation from 2005 through 2010.

John grew up in a Dutch dairy farming family in Southern California and then in Southern Oregon where he learned the values of hard work and responsibility at a very young age. John resides in Lake Oswego, Oregon with his wife and two children and enjoys tennis, fly fishing, skiing, woodworking, and camping with his family.

John graduated from Southern Oregon State University in 1987 with a Bachelors Degree in Business Administration. In 1991 he received his Certified Financial Planner professional designation.

Grant Gerke

Grant Gerke has over 32 years of experience in healthcare and is regarded as a dental industry leader. His experience includes 20 years at A-dec, with 15 years serving on the executive team in Vice President roles involving global sales, marketing, new product development and customer service. Grant also served as the Vice President of Sales for Patterson Dental where he was responsible for over $2B in sales and more than 3,000 employees. This deep experience provides him with a wealth of knowledge and relationships in the dental business. Each step along the way, his focus has been on helping dentists become more satisfied and successful in their practices.

Grant’s leadership role extends to having served on the boards of The American Dental Trade Association, Dental Trade Alliance, American Association of Dental Assistant’s Foundation and the International Dental Manufacturer’s. He is a Past President of the Newberg Rotary Club, and also served on the Board of Eastco Diversified Services.

Grant attended George Fox University and the University of Washington and holds two Bachelor of Science degrees. Grant and his wife Marel live in Tualatin, OR.

Steve-Head-Shot-webSteve Persichetti, DDS, MBA

Steve Persichetti has always been engaged in all aspects of dental practice and dental practice transitions. He has enjoyed being an independent, full time, clinical dentist; teaching practice administration as an Associate Professor at the Oregon Health Sciences University School of Dentistry for over 30 years and holding leadership positions in multiple dental organizations.

Steve has an MBA from Portland State University. The combination of his business education, years of lecturing on successful practice transitions and his strong desire to see buyers and sellers manage these transitions successfully, truly positions him in the marketplace. Steve wants Green Sail Transitions clients to succeed. He feels that he has much insight and experience to bring to your practice transition.

Dr. Persichetti makes his home in Raleigh Hills with his two daughters.

dental office for sale in PortlandDr. Ernest R. Thompson, DMD, MAGD

Dr. Thompson graduated from The Oregon Health Sciences University in 1983 and has been in private practice for 34 years. He started his own practice from scratch while working as an associate with three other practices during the first 12 years as the practice grew. He purchased a satellite office a year out of school and worked that for 12 years before selling it to another dentist. He also purchased the charts from a colleague who was moving out of town and incorporated those patients into his own realizing nearly a 90% retention rate on those patients during the transfer. He has also employed four different associates over the past 10 years as part of his personal practice as they developed their skills and prepared themselves for purchasing a practice of their own. Because of these personal experiences, Dr. Thompson is uniquely qualified to assist with associate agreements, practice transitions, and practice sales.

Rob-Head-Shot-WebRob Kay, Retired

Rob Kay has held several key positions over the past thirty years with North America’s largest dental distribution company. Starting as a Territory Sales Representative, he soon moved into management as Branch Manager and Region Manager. Serving the Portland dental community for over a decade as the Portland Branch Manager, he was responsible for over 60 employees and annual revenues of over $35 million dollars.

As the Western Region Manager, he oversaw fifteen years of growth and expansion. Building the region to seventeen branches and over 1000 employees the Western Region had annual revenues of over $400 million.
Rob has served on the Board of Advisers for Proofs Magazine and Dental Economics, two of the largest dental trade magazines. He speaks regularly at OHSU School of Dentistry, several local dental societies, and at A-dec’s Education Center.

Having a Bachelor of Science in Business Administration from San Diego State University, he has utilized his strong business and financial acumen to help Dentists, dental laboratories and other dental related businesses achieve and exceed their goals. With over thirty years of expertise in dental equipment, dental consumables, floor planning and office design, he has the knowledge and experience that you can trust and depend on.