Dr. John Mullen, DPT is a World-renowned expert and speaker in sports training and rehabilitation. He received his Doctorate in Physical Therapy at USC, as well as the Josette Antonelli Division Service Scholarship, Order of the Golden Cane, and the Order of Areté. At USC, he also performed research on strength training and rehabilitation. Dr. John has worked with over 30 Olympic and Professional athletes, helping them earn over 15 Olympic medals. He was also the editor of the book Swimming Science  and was named one of the Best 3 Physical Therapists in Santa Clara in 2018, 2019, and 2020.

His dedication to research and individualization spurred him to open COR in 2011. Since 2011, Dr. John has been featured in Gizmodo, Motherboard, Stack Magazine, and much more.

He has worked with numerous colleges and teams regarding rehab and performance. He has also done sports performance consulting for team China, the Philippines, Trinidad and Tobago and more.

Before his Doctoral program, Dr. John swam on an athletic scholarship at Purdue University. At Purdue, Dr. John was an Academic Honorable Mention All-American and was awarded the Red Mackey Award and R. O. Papenguh Award. He also won the Purdue Undergraduate business plan and elevator pitch competition, as well as 1st prize with the Indiana Soy Bean Alliance.

Dr. John was born in Centerville, Ohio and was a 24-time high school All-American Swimmer. Dr. John is still a swimmer and is a former Masters Swimming World and Pacific Swimming Record.

Katrina is a Doctor Physical Therapist offering over 12  years of experience with primary expertise in orthopedic outpatient settings.  She has many skills set include focus on manual therapy, dry needling, myofascial release, postural re-education, dance and sports medicine while incorporating neuromuscular re-education, Pilates and yoga based expertises. Her primary goals are to increase body awareness and incorporate preventative care to help maintain healing for patients by getting to root causes of symptoms. She is deeply passionate and committed to spreading knowledge of health tools and delivering treatments/education to facilitate the overall health and well-being of patients. Faith, Family, Food, Fitness, and FUN! Katrina loves to hike, bike, dance, run, do CrossFit type workouts, cook clean, travel, coffee as well as constantly learn, grow, evolve and teach in all areas of life. Come evolve alongside her in your journey to optimal health and physical performance!

Greg Gimenez grew up in California and has been active his entire life. He grew up playing multiple sports, focusing on football and wrestling. He then took up many other activities, focusing on powerlifting and outrigger canoeing.

While Greg was training powerlifters and other athletes, he discovered the importance of recovery and massage. At this time, he dove into massage therapy, receiving Honors at the National Holistic Institute Advanced Neuromuscular Therapy program. With his massage practice, Greg uses a variety of techniques, which include, but aren’t limited to deep tissue massage, trigger point, sports massage, pre/post-event massage, Shiatsu, Lymphatic drainage, and many others.

Greg has worked with numerous elite strength and power athletes, MMA competitors, Canoers/Kayakers, SUP paddlers, swimmers, and many more!

At the age of 10, Priscilla was watching soccer icon, Brandi Chastain, on TV. This motivating figure inspired Prciscilla to begin her fitness journey. She  enrolled in my local soccer program, but after several seasons of playing she sustained a knee injury that kept her from playing contact sports. She had to shift gears, unable to participate in fitness the way she had known up to this point. At this time, she uncovered weight lifting and through weight lifting, she gained an understanding that all muscle groups whether big or small were crucial in my road to recovery. After making this discovery, Priscilla earned my certification as a personal trainer to help others overcome their fear of reinjuring themselves as well as building their confidence around fitness.  She is a firm believer that everyone should have access to the knowledge and experts that will help them obtain their fitness goals. This passion led her to obtain a business degree through San Jose State University as well as putting her on the road to obtaining a Master’s degree in Kinesiology.

Tony lettered in three sports in high school- soccer, football, and lacrosse. It was in the dingy high school weight room that he fell in love with weight lifting, but he would not understand how to refine his pursuit of strength until years later. He got my BS in psychology at Allegheny College in Pennsylvania. He played soccer in college, and got into performance fitness while lifting weights in off season training. Over the course of his athletic career, he sustained several broken bones, concussions, and muscle tears, and working with the athletic trainers at his college sparked my interest in physical therapy and sports medicine. He’s now certified in personal training and nutrition coaching, and is considering a career in physical therapy. He enjoys training athletes for performance, but his most rewarding clients are the ones who he can dissuade of the belief that they have lost some ability-whether to injury or age. He’s been coaching since 2017, and his current goal is qualifying for strong first barbell certification. When he’s not pursuing fitness, Tony’s at a recording studio working with artists and podcasters to cut and mix their projects.

Ian is a Doctor of Physical Therapy (DPT) and Bay Area native. His interest in physical therapy began in Santa Barbara when he was working towards his Bachelor’s in Science degree in Biology. At this time, Ian, an avid and active athlete since his teens, sustained several ankle injuries that caused pain and sensitivity that stopped him from running. Previously he was able to run at a five-minute mile pace, so this was a major roadblock for him. It was only with the guidance on exercise progression provided by a physical therapist that he was able to confidently return to running at full capacity. In outpatient orthopedic clinics he saw first-hand the significant impacts physical therapists were making by helping others improve their mobility, movement patterns, and athletic performance. This motivated Ian to pursue a degree and career in physical therapy. At the University of Florida, Ian worked with other DPT students to run a school affiliated clinic offering pro bono physical therapy services to the community.

Ian returned to the South Bay to practice and serve the community he considers his own. He has worked with a wide variety of clients, including athletes; weekend warriors; those with neurological, muscular, or bone related conditions; and those with both recent and old surgeries. Ian avidly reviews the latest physical therapy research to provide his patients with treatments that are evidence-based and tailored to be specific to each person’s needs and goals. When not in the clinic, Ian may be found surfing, hiking, running, playing tennis, strumming a guitar, and enjoying time with family and friends.

Dr. Jim is a Doctor of Physical Therapy from NYU and Certified Strength and Conditioning Specialist. In his approach to treatment, he believes in bridging the gap between rehab and performance. His skills include manual therapy, instrument assisted soft tissue mobilization, and blood flow restriction therapy. Additionally, Jim trained as a vestibular physical therapist at NYU Langone and offers expertise in treatment and management of a variety of vestibular disorders, headache/migraines, and concussions. No matter the condition, he loves helping his patients take control of their health. His primary goal is to equip each patient with the tools they need to live a healthy life.

Jim is a San Francisco native and began his athlete career as a dragon boat paddler. While getting his Bachelor’s degree in Exercise Biology at UC Davis, he coached his college dragon boat team and expanded his paddling to outrigger canoes. At the same time, he developed a passion for strength training, powerlifting, CrossFit, and weightlifting. When he isn’t getting after it in the gym, Jim loves exploring new restaurants and going on hikes and runs with his wife and their dog Kora.

Ebony grew up in the Bay Area with her mother and sisters. Alongside her family, she spent her time singing, dancing, skating, baking, and performing at fairs. Ebony enjoys focusing on her education and spending time with her nieces and nephews. She studied at Heald College in Computer Business Administration.

While Ebony became more involved with the medical field, she discovered the beauty of massage and its benefits. As she wanted to do more, she dove into the massage therapy course, at the National Holistic Institute in San Jose. With her massage practice, she continues to work towards learning more and pursuing her certification in becoming a Doula.

Ebony has worked in many fields, from sales to marketing, nursing homes, and now finding a home here at COR as our Billing & Office Manager. She works to help others understand their policies and feel comfortable with the knowledge of their financial options to work towards the recovery they need and deserve.

Daniel received his Personal Training Certification from the accredited National Academy of Sports Medicine. He has also received his B.S in Kinesiology at San Jose State University in the Spring of 2021. Prior to COR, Daniel has worked alongside different athletic clubs in the Bay Area, most notably Mountain View Volleyball Club where he is currently an Assistant Coach.

Born and raised in the Bay Area, Daniel grew up playing basketball for several years. His strength in science and love for sports led him down the path of Kinesiology where he is able to decide on several career paths ranging from Sports Medicine to Physical Therapy. Throughout his years in sports, Daniel has been a player and a coach for several different teams. Being in this environment has curated a strong interest in working with athletes in both injury prevention and skill/performance development. When entering college, Daniel took a sudden interest in volleyball. He developed a strong passion for the sport and wanted to further his abilities in order to keep up with his peers. In order to improve his own abilities, he applied his studies to his own program targeted at increasing his athleticism.

To this day, Daniel continues to play volleyball and further increases his vertical abilities in his off time. Outside of COR, you can find him playing all over the Bay Area in tournaments, open gyms, or at Cataldi Park on the grass.

Originally from the Bay Area, Dr. Harrison returns after completing his Doctorate of Physical Therapy at the University of Southern California and also having spent time in Asia for various professional and personal endeavors.

Junsik Kim was born in Seoul, South Korea. As an athlete in high school, he developed an interest in sports science, participating in basketball, soccer, and golf. He received a bachelor’s degree in bio-health science and a minor in kinesiology from Oregon State University. While at Oregon State, he had a chance to work as the basketball team chiropractor.

With his experience at Oregon State, he decided to go to chiropractic school and received his Doctorate Degree from Palmer College of Chiropractic West, San Jose, CA in 2021.

Junsik’s goal as a clinician is to help patients achieve their health goals, reduce pain, and improve wellness. He uses diversified chiropractic manipulative techniques including mobilization, flexion-distraction, and soft tissue work to provide effective care. He was also certified as an Active Release Technique (ART) to increase patients’ mobility and reduced symptoms. His goal is to share safe and effective chiropractic care to many people.