Dr. David Allan Slier specializes in clinical psychologist in La Mesa area. Dr. David Allan Slier, CP has a medical practice at 4700 Spring Street, Ste 306, La Mesa CA, and has over 32 years of experience in the field of medicine. He graduated from his medical school with his medical degree in 1985. Dr. Slier is accepting new patients at his medical office and practice location in La Mesa, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.