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.

In 2017, Rob retired and Grant Gerke joined the team. Grant, like Rob, had a long career in the dental supply, equipment and manufacturing fields.  With over 32 years of industry experience, Grant spent 20 of those years as a Senior Executive with Patterson and A-dec.

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, 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®

President & Co-Founder

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

Special Consultant


Steve Persichetti, DDS, 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


Grant Gerke

Associate Broker

  • 32+ years healthcare experience
  • 20 years with A-dec, 15 years on the executive team
  • 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


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



Rob Kay, Retired


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

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.


Whether you are ready to sell today or are just gathering information about a future sale, you’ve come to the right place. We have different levels of practice valuation services ranging from a free, do-it-yourself version, to a complete valuation ready to use as a beautiful marketing piece for your practice.

We also offer equipment-only valuations and our exclusive “Financial Appraisal” that is a lower cost way to determine your exact value for sale “consideration” or future sale planning.

Valuation Options

Comprehensive Valuation: Appropriate for practice sales. Fee is refunded at closing from sales commission.

Financial Valuation: Appropriate for accurate value for planning purposes such as bringing in an associate with a buy-in option, selling to someone who is already familiar with the practice, etc. This service is a reduced fee since all the narrative and photographs are not needed.

Do-It-Yourself Workbook: This is offered as a service to owners who would like to work through the valuation methodology themselves without a fee. We can provide you with an Excel spreadsheet or a .pdf file. Just send us a request and follow the instructions!

Equipment Only Valuation: If you just need to have your equipment appraised, we provide that service as well.


Perhaps you are wondering when you should start looking for a practice to purchase or when it makes sense apply for financing. We can help you whether you are ready to own now or just thinking about your options. The first thing you need to do is join our email notification list to keep up to date with practices available.

Members of our email notification list receive regular updates on practice listings, associateship opportunities, Hygienist and assistant positions, market news and special notifications and offers.

When you sign up let us know where you would like to locate and what size/type of practice is right for you. Green Sail Transitions keeps meticulous records of our buyers and their needs.

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 120 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!