Private Golf Lessons & Coaches in Simi Valley, CA

David Byrne is an internationally experienced PGA Professional and Golf Performance Coach, bringing over 25 years of elite coaching expertise across the United States and Europe. Originally from Ireland, David is a dual member of both the PGA of America and the European/UK PGA, a distinction that reflects his global perspective and deep-rooted knowledge of the game. Known as “The Golf Whisperer,” David has built a reputation for transforming players of all levels—from complete beginners to elite amateurs and touring professionals—by simplifying the golf swing and delivering measurable, lasting results. David holds a Master’s degree in Sports Psychology, giving him a unique edge in performance coaching. He integrates mental conditioning, focus training, and competitive mindset development into every lesson, helping players not only improve technically but also perform under pressure. His coaching philosophy blends athletic movement, body-driven mechanics, and efficient ball striking, moving away from overly technical instruction and toward a more natural, repeatable swing. In addition to his coaching career, David is a published author and co-creator of the golf book “The Swing,” where he shares his insights into simplifying the game and unlocking peak performance. His background also includes experience as a college-level coach, further strengthening his ability to develop players in structured, high-performance environments. A firm believer in combining tradition with innovation, David utilizes advanced technology such as TrackMan, GCQuad, and high-speed video analysis to provide precise feedback and accelerate improvement. He also incorporates golf-specific fitness and mobility training, ensuring his players develop strength, flexibility, and durability to support a powerful, efficient swing. David’s coaching covers all aspects of the game, including: Full Swing (Driver & Irons) Short Game & Scoring Course Management & Strategy Mental Performance & Golf Psychology Competitive Player Development Golf Fitness & Movement Training A former Irish Sports Writers Pro-Am Champion (2016) with a sub-par winning performance, David combines competitive playing experience with world-class coaching knowledge. Now based in Santa Monica, California, David works with dedicated golfers seeking to elevate their game, lower their scores, and play with clarity, confidence, and consistency.

"I was only fortunate enough to know and work with David Byrne for a little over a month before he relocated to California, but that short time made a lasting impact on my game. I truly enjoyed his passion for golf and his genuine desire to help players get better. David often went out of his way to coach me between lessons whenever he wasn’t already busy teaching others—something I greatly appreciated. At 67 years old, I’m not looking to completely rebuild my golf swing, and David understood that from day one. His approach focuses on helping you find a swing thought that works for your swing, rather than forcing a onesizefitsall method. He helped me understand my swing plane and path, and how to consistently get into the right position before impact. After that, his favorite encouragement was always: ‘Turn the corner!’ And it worked. David is a talented instructor, an insightful coach, and an allaround good person. And watch out for his son—just a wee lad with a fabulous golf swing already! David’s passion clearly runs in the family.

With two decades honing my craft, I bring tour-level insight to every lesson. I aim to cultivate a love for the game while elevating your skills. Let's unlock your golfing potential together!

I spent much of my younger adult life playing golf professionally and attempting to qualify for the PGA tour. I was competing more then teaching but along the way, I learned from some of the best instructors in the country..Ive always loved dissecting the swing and helping others understand what creates improvement. Nothing is more rewarding than seeing the "light bulb moment" when it clicks. I enjoy working with golfers of all skill levels.i look forward to helping you enjoy golf even more.

Timothy Galvan has been playing golf for over 30 years. He attended and graduated Hawaii Pacific University on a golf scholarship in 2009. While there, he took on a leadership role as the Head Coach for the University’s men’s team. While attending school Timothy worked for the K’oalau Golf Course as an Assistant Professional. He gained experience in course management and all things operations; K’oalau is also where he began his teaching career. Timothy turned professional after graduating college in 2009 and has competed on tours all over the world. In 2015 Timothy shifted his focus to player development and private coaching. He has focused on cultivating a high-end clientele base and turning weekend golfers into confident athletes. He helps people take their love for golf and become the best golfer that they can be. Timothy is excited to be a part of the Calabasas Country Club team as their Director of Golf Instrucon. He brings with him over a decade of experience and a lifetime of passion, with a hunger to create lasting experiences.

"Getting a lesson with Timothy was quite helpful, especially since I’d say the lesson highlighted some useful areas to focus on. Though, I’d still like to see more emphasis on my swing mechanics to really feel confident. Anyway, definitely worth trying if you want a balanced approach to improving your golf game.