Silver Lake Staff

Mark Peterson

General Manager

Mark began his career in the Athletic Club industry over 20 years ago, joining Columbia Athletic Clubs in 1998. During his Athletic Club career he as worked in many different capacities from a front desk attendant to his current position as General Manager. During his tenor with CAC he has worked at some capacity in each of the 4 different locations. He began managing the Silver Lake Location in 2010 after spending the previous 5 years as the GM of the Juanita location. He is a graduate of Washington State University with a BA in Business Administration and a minor in Sports Management.

Bobby Sorensen

Fitness Director/Run Coach

Bobby graduated from the University of Washington and holds a NESTA-CPT certification. He is an avid runner, has coached both middle school and high school cross country and track programs, and loves endurance sports. Bobby specializes in cardio-strength training, helping his clients “dig deeper.” He came to CAC in 2010. In his spare time, he enjoys running, basketball, swimming, and cycling.

Dot Chase

Group Exercise Director

Dot received her Degree in Exercise Science from the University of Idaho and continued on to earn a Minor in Nutrition. She is as ACE Certified Personal Trainer and AFAA Group Exercise Instructor. She started teaching classes while in college, and hasn’t stopped since! She teaches Group Power, Group Centergy, Group Ride, and water exercise classes. When not at work or exercising, she may be found cheering her boys on at a sporting event or with her husband out to dinner.

Bari Dockens

Programs Director

Bari earned her Bachelor’s of Arts and Science at the University of Arizona a long, long, time ago. She is ACE certified for group fitness and has obtained a variety of other certifications in the last 25 years, all spent teaching kids and adults from all stages and ages. She still gets excited meeting new participants and seeing them get hooked on working out with all of the veterans! Fun is a priority for Bari, along with safety and the feeling of good pain! Her goal is to create a positive memory in everything she does with the people she meets. Bari loves traveling and adventures, waterskiing and snow skiing, dancing until her feet are sore and celebrating (just about anything) with good friends and family!

Mark Bergman

Tennis Director

Mark has been the Tennis Director at Silver Lake for over 12 years. Besides running the Tennis Department, Mark enjoys teaching and developing tennis players of all ages and skill levels. Mark is a USPTA certified professional as well as owner of Racquet Rehab, the Tennis pro shop located within the club. Mark has been active in the PNW Tennis scene serving on various boards over the years. A graduate of Washington State University, he has degrees in Communication-Broadcasting and Recreation/Leisure-Sport Management. Outside of work, the whole family enjoys playing tennis, wife Angelica and kids Ben, Hannah and Ashton. Growing up, Mark’s dream job was to be the GM of the Seahawks or Sonics, but now has to settle for being a big fan of our local pro teams.

Drew Whorley

Aquatics Director

Drew Whorley earned his B.A. in Commercial Recreation at the University of North Carolina at Wilmington, where he swam competitively for four years and also coached for two seasons. Since moving to the Northwest in 1998 he has served as the Head Coach for the Jackson High School swim team. Drew has been with the company since 2002 and brings over 25 years of experience in Aquatics to Columbia. In lieu of what used to be “free time” he now has three beautiful daughters.

Fitness Staff

Logan Baxter - Personal Trainer

Logan Baxter

Logan received her certification as a personal trainer through the National Academy of Sport’s Medicine. She also has a Master’s degree in counseling psychology. Logan has participated in many competitive sports including basketball, swimming and currently tennis. Fitness, health and feeling good has always been a big part of her life. During Logan’s “free” time she is very busy with her daughter, Arianna, who many may have met at CAC. She keeps her mommy going!

Chrissy Capponi - Personal Trainer

Chrissy Capponi

Chrissy earned her B.S. in Marketing from Gonzaga University. She holds a personal training certification from NASM and joined CAC’s fitness team in April of 2008. Chrissy has always been passionate about running and fitness in general and loves working with clients of all ages and fitness levels. She also joined the group exercise team in 2009 and has since been active in teaching Group Ride and Group Core classes. When she is not teaching classes or training clients she enjoys running half marathons and road biking in the summer. Truthfully, most of her “spare” time is spent watching her two kids play their sports and spending time with family and friends.

Danny Churchill

Danny Churchill

Danny joined the CAC-Silver Lake Fitness staff in 2015. He is a certified personal trainer through National Academy of Sports Medicine (NASM), Kettle bell Concepts coach, USA Weightlifting level one coach, and International Sports Science Association (ISSA) Kickboxing certified instructor. Danny has over 20 years’ experience working with a wide variety of populations through many different fitness domains including weight loss, strength and conditioning, injury prevention, wellness coaching, endurance training, kickboxing, and elderly clientele. His customized programs follow his belief that infusing fitness into everyday activities ensures a healthy, happy, fulfilling lifestyle.

Kelsey O' Brien

Kelsey Dubois

Fitness Coordinator/Personal Trainer

Kelsey recently graduated from Bastyr University with a Bachelors of Science in Nutrition. She obtained her CPT through NASM, and loves working with others to improve their overall health and well-being. In her spare time she enjoys spending time with loved ones, strength training, taking advantage of Washington’s beauty by hiking and running, cooking healthy meals, and sharing her knowledge of nutrition and fitness on her blog. She believes that fitness is a lifestyle, not a duty. Taking care of your body should be something you enjoy and strive to do every day!

Buffy Linnell - Personal Trainer

Buffy Linnell

Buffy Linnell is ACSM-HFS Certified and has an Exercise Specialist Degree from Lake Washington Technical College. She is also certified in Fitness Nutrition through the American Council on Exercise. Buffy has been with CAC full-time since 2003, as a Personal Trainer. She is an avid runner and triathlete, completing 2 full Ironmans, and more triathlons and road races than she can count. Buffy has recently taken up tennis and plays on the CAC-Silver Lake Ladies Day League. In her spare time she enjoys spending time at her second home in East Wenatchee, x-country skiing, running, cycling and enjoying the sunshine!

Hau Luong - Personal Trainer

Hau Luong

Loung has been familiar with fitness for many years now. His story started in the weight room before it moved onto the tennis court. Although Luong has been around strength training and bodybuilding longer, he would happily admit that his knowledge of both weight training and tennis are equal. Loung enjoys helping a wide range of people, whether it be grandparents or toddlers. He finds that people who are over 40 appreciate his knowledge of injury prevention while attaining strength and mobility; all those under 40 appreciate his diverse knowledge base. Loung works with many individuals who have permanent injuries and will always manage to work around them.


Jess Roy

Jess has spent years researching, both while getting her degree and on her own personal time, how to customize a fitness program to a wide variety of fitness goals. She believes in her programming as it is backed with a scientific background, not just fads and what’s “in right now.” Jess truly enjoys being a personal trainer, and hopes to exceed your expectations.

Jess has played sports since elementary school. She was recruited to play softball at Boise State University, and soon after started competing in national bodybuilding – where she now holds multiple titles. Jess truly lives the lifestyle that she teaches her clients! As an exercise science graduate, Jess is able to cater to many genres of fitness such as lifestyle training, strength and conditioning, athletic performance and weight loss. She wants to be a friendly face as well as make the gym something you look forward to and somewhere you feel comfortable.


Mikayla Tanis

Mikayla received her degree in Kinesiology(Exercise Science) from Western Washington University in 2016. She has been a certified personal trainer and group exercise instructor for six years and a indoor cycling instructor for three. She LOVES running, HIIT, and hot yoga. When she is not exercising she enjoys being anywhere outside with her 3 month old daughter and Fiancé.

Sara Thompson

Sarah Thompson

Sara has been working in the fitness industry for over 8 years and has multiple certifications and areas of specialty. Her journey of losing over 90 lbs has helped her realize how important a healthy, whole foods diet combined with daily movement is to feeling and moving well and pain free. She started with teaching fitness classes and then moved on to training 1:1 to maximize the individualization that each client needs. She loves helping clients get over poor posture and old injuries and realign their body to get stronger. She also has a specialization with pre and postnatal and fitness nutrition. In her spare time she loves to hike, read, spend time with family and friends and is always on the search for good food and wine.

Lindsay Leonard - Personal Trainer

Lindsay Zebley

Lindsay holds an ACSM – Health and Fitness Specialist certification. She specializes in weight loss programs, as well as getting her clients to commit to a lifestyle of healthy eating and consistent exercise. Lindsay has been personal training for CAC since 2009. She also enjoys making people sweat in her Thursday night Bootcamp class. Some of Lindsay’s favorite things to do are snowboarding, horseback riding, camping and researching nutrition, organic gardening and soap making! Lindsay’s favorite quote for personal training is, “I am your coach, not your crutch!