Dr. David C Shaffer is a board-certified chiropractic sports physician with over 26 years of experience in conservative musculoskeletal care, sports medicine, and rehabilitation. He currently serves as a chiropractic physician with Zen Health-Acupuncture & Chiropractic in Covina and Pasadena, California. Prior to this, he was a chiropractic sports physician at Lifekind Health Pain Management in Riverside (2022-2025), Personalize Lifestyle Medicine Center in Aliso Viejo (2020–2022), and Beach Cities Orthopedics & Sports Medicine in Torrance (2014–2020).

Dr. Shaffer began his clinical career in 1999 as a senior staff doctor with Premiere Chiropractic & Sports Medicine in Redondo Beach. Over the years, he held key leadership roles at several high-volume practices, including Clinic Director at Summit Pain & Injury Treatment Centers in Los Angeles and Redondo Beach (2002–2005), and at NOVA Spine & Injury Center in Fairfax, Virginia (2006–2013). He also served as Director of Human Performance at Noraxon USA and previously directed chiropractic medicine services part-time at Pain & Rehabilitation Medical Group in Torrance. His early hospital-based work included serving on staff at the Center for Health & Well Being at Little Company of Mary Hospital.

Dr. Shaffer earned his Doctor of Chiropractic degree from Palmer College of Chiropractic West in San Jose, CA, and holds a Bachelor of Arts in History with a concentration in Far-East Asian studies from the University of Pittsburgh. He has held multiple clinical certifications, including Certified Strength and Conditioning Specialist (CSCS), Advanced Practice of Chiropractic Medicine (APCM-C), and Qualified Medical Examiner (QME, inactive). He is actively completing additional diplomate and certification programs in sports medicine, rehabilitation, and human performance.

A frequent speaker and educator, Dr. Shaffer has presented to the Performing Arts Medicine Association and lobbied before U.S. Congress on healthcare policy. His event-based sports medicine experience includes providing care at national and international competitions such as USA Track & Field, AVP Volleyball, and Brazilian Jiu-Jitsu World Championships.

He is a past member of the American Chiropractic Association, American College of Sports Medicine, and Virginia Chiropractic Association. Dr. Shaffer is known for his integrative, patient-centered approach to care, and is passionate about optimizing biomechanics/human performance and recovery.