About Us

Dr. Lonna Denny D.C. Dr. Denny is the former owner of Optimum Health Chiropractic and now owns San Francisco Spine Pain Relief Center, a Denny Chiropractic Corp. She received her undergraduate degree in biology from Mills College and is a Summa Cum Laude graduate of Life Chiropractic College West. Dr. Denny has won the Excellence in Care Award and the L.C.C.W. Clinic Honors Award.She is a frequent speaker for many government and civic agencies such as the U.S. Dept. of Health and Human Services, the U.S. Dept. of Labor, and San Francisco MUNI.Her most popular health lectures are; how to slow down the aging process, the dangers of the American diet, and understanding how food affects your brain chemistry.Having been a teaching assistant for the Mills College Organic Chemistry Dept., and a tutor for Biochemistry at Life Chiropractic College West, she has valuable insight on improving the mechanical and biochemical aspect of the human body.Dr. Denny has lived in San Francisco for over 30 years. In her free time she enjoys body building, boxing, and being a student of Krav Maga. Her passion in life is to help people enjoy the best health possible so they can enjoy the best life possible.
Krystal_Drwencke_DC
Dr. Krystal Drwencke D.C. Dr. Drwencke learned an appreciation for movement and the human form at an early age, while studying dance as a member of the Macomb (MI) Ballet Company. After chiropractic care helped her through a bout of sciatica from an intense audition, she knew she would study become a doctor of chiropractic. She received her undergraduate degree in biology and doctorate of chiropractic from Life University. Dr. Drwencke has over 450 hours in postgraduate education in Functional Neurology, Functional Medicine, Neurobehavioral Disorders of Childhood, Vestibular Rehabilitation, Movement Disorders, and Brain Injury. Originally from Detroit, Michigan, Dr. Drwencke has worked in clinics in Atlanta, Georgia, Shivpuri, India, and Birmingham, Alabama before making her way to San Francisco Spine Pain Relief Center. She has taught classes in yoga, high-intensity interval training, mobility, and injury prevention for CrossFit and geriatric populations. She keeps active with CrossFit, yoga, and hiking. Dr. Drwencke is an active participant in The Patriot Project. She is also a certified ROCKTAPEā„¢ provider. She is relentless in her pursuit of improving the quality of life and performance for her fellow human.
raosame-jacques-171x225Chiropractic Assistant, Raosame-Jacques

Office Manager Jill Hass Jill is an experienced receptionist and insurance expert. She will help you verify insurance coverage, bill Health Savings Accounts, or provide whatever documentation you may need for your insurance company.

To make an appointment , call 415.775.9100