Dental Practice Sales & Transitions

Green Sail Transitions specializes in dental practice sales, acquisitions and mergers. We are Unique!

Green Sail Transitions was founded to bring the dental practice transition experience to a whole new level. John Van Leeuwen, CFP®, a 27-year financial advisor and Rob Kay, with 30 years of dental equipment experience partnered to provide dentists with a level of expertise that did not exist in the marketplace.

In 2016, Stephen J. Persichetti, D.D.S., MBA, joined the team with over 30 years of dental practice experience and 30 years of teaching practice transitions and practice management at OHSU School of Dentistry.

Green Sail Transitions  is now fully qualified to assist our clients as no one else can because of our skills in all aspects of the dental market. John, Rob, Grant, Ernie, and Steve are uniquely qualified to not only make your transition a success, but also assure your personal and business success for many years to come.

So, whether you are a buyer or a seller, we stand ready to help you with any number of issues and challenges that you may face during your transition and after. No other firm can offer this exceptional breadth of service:

We treat all of our clients with the highest level of integrity.

Your goals are important to us and that’s why you can depend on us to be discrete and respect your confidentiality…always.


John Van Leeuwen, CFP®

Co-Founder & President

  • Cash flow management
  • Debt pay down strategies
  • Asset accumulation
  • Retirement plans
  • Tax planning guidance



Rob Kay


  • Precise equipment valuations
  • Secondary market strategies
  • Upgrades
  • Sale preparation
  • Leases


Grant Gerke

Associate Broker

  • 32+ years healthcare experience
  • 20 years with A-dec, 15 years on the executive board
  • Former Vice President of Sales for Patterson Dental
  • A wealth of knowledge and relationships in the dental business
  • Served on boards of The American Dental Trade Association, Dental Trade Alliance, American Association of Dental Assistant’s Foundation, International Dental Manufacturers, and Eastco Diversified Services
  • Two Bachelor of Science degrees
  • Past president of the Newberg Rotary Club
  • Practice/Clinical

    dental office for sale in Portland

    Ernest R. Thompson, DMD, MAGD

    Associate Broker

    • Owned and operated his practice for 34 years
    • Experienced with associate agreements
    • Uniquely qualified to assist with practice transitions

    Special Consultant


    Steve Persichetti, D.D.S., MBA

    Former Broker & Senior Consultant

    • Insights to maximize practice value
    • Deep ties to the practicing dental community
    • Networks of numerous potential buyers
    • Ability to help buyers in the buying process
    • Assistance for patients/staff in a transition

    The Difference is Our Experience

    Experience the Difference

    The Green Sail Difference

    Both Buyers and sellers often ask “where do I start?” The GST team will always answer the phone to advise you! We will listen. We want to understand your unique goals and objectives, after all, everyone has different visions and needs. Furthermore, every dental practice is different and each dentist has different skill sets.



    We can also help you with our exclusive “Check-List” and refer you to the right banks, attorneys, CPA’s and consultants.

    The GST team is also ready to present to your study club or society on topics such as:

    • Preparing for a Transition and Market tends
    • The emotional challenges of retiring
    • Practice sale pitfalls
    • Maximizing your practice value
    • Equipment/Technology
    • Leases
    • Full, hands-on, practice value workshop where all attendees determine the value of their own practices!

    A Complete Approach to Practice Transitions

    At GST, you will be a member of a select clientele coupling the finest dental practices for sale with the top qualified buyers from around the country.

    We have the largest database of buyers in the industry. Our list is growing every day as more and more buyers discover our progressive methods for communicating practice purchase opportunities using social media and direct email campaigns. When we are faced with a particularly challenging practice, no problem! We can kick into high gear with our expanded proprietary national email list of dentists and dental professionals with over 45,000 contacts! Take a look at some of the testimonials from clients that came to GST after being listed with other brokers with no success!

    With GST you can rest assured the marketplace will know your opportunity exists.


    Our team is ready to help with over 90 years of dental experience in varying aspects of the dental business. Please take a moment to look at testimonials from our satisfied clients and view our current listings. Let us know how we can help you buy or sell a dental practice!