Exceptional Cosmetic & Implant Dentistry
San Juan Capistrano & Orange County Area #1 Dentist providing you and your family with the personalized experience you deserve!
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The Coastline
Dental Difference
Quality
Experts clinicians, guided by science
Comfort
Relaxing care in a calm environment
Technology
The latest tools for a modern experience
Your San Juan Capistrano & Orange County Area Dentist
We are committed to providing quality healthcare to families located in the San Juan Capistrano & Orange County area and treat patients of all ages. We provide comprehensive solutions for our patients’ oral health needs. Believing in the importance of listening to our patients, we take the time to truly understand each person’s needs, goals, and lifestyle. By understanding our patients’ objectives we can provide solutions that will improve their health while transforming their smile into something bright and beautiful.
Coastline Dental located at 31897 Del Obispo St Ste 100, San Juan Capistrano, CA. We are currently accepting new patients, and you can schedule an appointment with Coastline Dental your leading Dentist in San Juan Capistrano, CA by calling (949) 661-2290.
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Meet Dr. Leoni
Dr. Randal Leoni has been dedicated to providing exceptional dental care for over 20 years. He earned his Doctorate of Dental Medicine from the highly accredited Case Western Reserve University in Cleveland, Ohio, in 2004.
Upon returning to his hometown of San Diego, Dr. Leoni was recruited by a large national dental organization, where he gained extensive experience diagnosing and treating a wide range of oral conditions, injuries, and enhancements resulting in excellent outcomes. His expertise, precision, and commitment to patient care quickly set him apart—so much so that he became the dentist of choice for other dentists within his organization.
Dr. Leoni’s love for dentistry stems from his desire to help people feel confident, comfortable, and healthy. He understands that a great smile isn’t just about aesthetics—it’s about function, well-being, and self-assurance. Whether he’s restoring a patient’s ability to eat without discomfort, relieving pain, or crafting a beautiful, natural-looking smile, he is driven by the impact his work has on his patients’ lives.
At Coastline Dental, Dr. Leoni brings his deep expertise and patient-first philosophy to every appointment. He is highly trained in the latest proven digital and technical advancements in dentistry, ensuring his patients receive state-of-the-art care in a welcoming and comfortable environment.
Education & Expertise
Dr. Leoni’s advanced training includes:
• Graduate & Fellow of the prestigious Misch Implant Institute
• Graduate of Progressive Orthodontics
• Member of DOCS Education, ADA, CDA, and SDCDS
• Licensed in Oral Sedation
• Certified in Invisalign
Outside the office, Dr. Leoni enjoys spending time with his wife, Raelynn, and their children—Stormie, Kaeli, Brendi, and Kyle. His passion for precision extends beyond dentistry into woodworking, where he has built many custom pieces including desks, tables, outdoor structures, and a stand alone sauna.
His dedication to craftsmanship—whether in the workshop or the dental chair—reflects his meticulous attention to detail and commitment to excellence. At Coastline Dental, Dr. Leoni and his team take pride in offering a different kind of dental experience—one that is built on trust, expertise, and a genuine passion for patient care.
Our Services
We offer a wide array of services aimed at exceeding your expectations
Introducing iTero intraoral scanner
Our new state-of-the-art digital imaging system that captures detailed 3D images of your teeth and gums.
See What Our Patients Are Saying
When visiting Coastline Dental Group, please note: For accurate directions when using Google or Apple Maps, ensure to enter the parking lot via Paseo Adelanto.
This small adjustment will help you find us easily and avoid any confusion!
