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David Walling, Ph.D.

Chief Clinical OfficerLicensed PsychologistChief Clinical Officer, Apex Innovative Sciences Chief Executive Officer, Principal Investigator, Collaborative Neuroscience Research, Licensed Psychologist

Dr. Walling co-founded Collaborative Neuroscience Research (CNS) in 2000 to advance medical knowledge through the execution of clinical trials. His operational and strategic leadership has enabled the growth of CNS into one of the largest clinical research providers in the US. He is a principal investigator for many studies at the inpatient unit in Long Beach as well as the outpatient clinic in Garden Grove. Dr. Walling advises pharmaceutical companies in numerous ways including the creation of drug development plans, design and analysis of clinical trials in all phases, and preparation for interactions with regulatory agencies.

Work History

Dr. Walling has served as an investigator in over 600 trials, including over 100 Phase I trials, with many focusing on schizophrenia and cognition, areas in which he is recognized as a thought leader.

Before founding CNS, Dr. Walling was VP of Clinical Services at Psychiatric Management Resources & Stadt Solutions Pharmacy Corporation. He has also served as an Assistant Professor and Research Scientist in Psychiatry and Behavioral Sciences at the University of Texas Medical Branch at Galveston. Dr. Walling has clinical experience as a licensed psychologist and marriage, family, and child counselor.

Dr. Walling has authored dozens of articles on psychiatric indications that have been published in leading scientific journals. Dr. Walling also provides training to rater training companies for some of the most widely used psychiatric and cognitive rating scales including the Positive and Negative Syndrome Scale (PANSS).

Dr. Walling is a highly sought-after KOL in psychiatry and in digital device and software technologies. His pioneering work in small proof of concept studies within Phase I development programs has ensured the successful path for several drugs. He holds multiple advisory board memberships and consulting positions for sponsors.

Dr. Walling received his doctorate in Counseling Psychology from the University of Southern California. He attended California State University, Long Beach, earning a master’s degree in Counseling as well as a bachelor’s degree in Psychology.