This is one of the first things I start when working with a practice:
1. Encouraging referrals – when a new patient calls in, find out who referred them. This of course is done by the receptionist over the phone. Make a point to acknowledge the person whom referred the new patient. For example, if Sally Smith referred the patient, the receptionist would say something such as “My, Sally Smith’s such a nice lady, isn’t she? It was so kind of her to recommend our services to you!” This if the first time the new patient hears about referrals.
2. Put a tastefully bold sign you waiting area - "We would like to help as many people as possible with their health needs. Please feel free to tell your family and friends that we are accepting new patients!" or a similar wording.
3. Survey your employees and patients for an award or discount you can give them for getting new patients into the practice (obviously can't violate any local laws on referring patients). This can be a Starbucks card, gas card, or something similar for each new patient gotten from referrals and can increase with the number of referrals a patient or staff member gets.
4. Create simple referral cards with the practice's contact information and stating that your practice is accepting new patients. Offer a special for new patients. Something significant, but not at a loss for the practice.
5. Hand out two (2) referral cards to all patients as they leave. Tell them how many people don't take care of their dental needs and that you want to help provide needed dental care and that you would like them to tell as many of their friends and family as possible about your practice. Let them know what special the new patient will get and what award they get when someone comes in with a referral card.
6. The staff should initial the cards they hand out so they can be awarded too.
7. Also recommend drilling your staff on this so they are comfortable doing it.
I have had real success implementing the above steps in many practices, though I have found that for each practice they have different response times before they start seeing an improvement in new patient numbers, but it does work.