Allan Larcena, MD

Principal Investigator Allan Larcena, MD has happily served the people of Slidell and surrounding communities as an Internist and Primary Care Physician since 1995. He completed his internship at Seton Hall affiliated hospital in Newark NJ and residency in Internal Medicine at Columbia University affiliated hospital in in Summit, New Jersey. He is board certified … Read more

Mary Hess, FNP

Sub Investigator Mary Hess, FNP joined the field of clinical research in 2022 as a full-time sub investigator for Velocity Clinical Research, Slidell. She initially became interested in research in the late 90’s while working for an endocrinologist from 1999-2007. Aside from research, Mary is no novice to the medical field with over 30 years … Read more

Robert Jenders, MD, MS, FACP, FACMI

Principal Investigator Robert Jenders, MD, MS, FACP, FACMI is a Professor of Medicine and Co-Director of the Center for Biomedical Informatics at Charles Drew University, as well as a Health Sciences Clinical Professor of Medicine and Associate Director of the Clinical and Translational Science Institute at the University of California, Los Angeles. A native of … Read more

J.Scott Overcash, MD

Medical Director, Principal Investigator J. Scott Overcash, MD joined eStudySite, now Velocity Clinical San Diego, in 2012 and serves as the lead Principal Investigator. Dr. Overcash is a board certified Emergency Physician with over 11 years of clinical research experience. He attended the University of North Carolina School of Medicine where he obtained his medical … Read more

Allison Davis, RN, BSN, CCRC

Site Manager Allison “Allie” Davis is the Site Manager at our Velocity San Diego site. With more than 15 years research experience, she has experience as a Certified Clinical Research Coordinator and an ICU and Trauma RN. Since joining eStudySite in 2006, she has been instrumental in the evolution of operating practices within the Company … Read more

Tshekedi Dennis, MD

Principal Investigator Tshekedi Dennis, MD is a board-certified Psychiatrist who has over 10 years of research experience as an Investigator and over 20 years in clinical medicine. He has conducted dozens of studies in indications such as Depressive Disorders, Post-Traumatic Stress Disorder (PTSD), General Anxiety, Schizophrenia, Dementia, Addiction, and more. Dr. Dennis has received recognition … Read more

Minie Mercado

Site Manager Minie Mercado, LVN, is a highly seasoned research professional. She has conducted studies from Phase 1-4 for the past 25 years. Some of her experience includes CNS, Metabolic, and Liver Disease. Prior to Velocity, she was head of NASH Research with a local Hepatology center.

Beth Safirstein, MD

Medical Director, Principal Investigator Beth Safirstein, MD co-founded MD Clinical (now Velocity Hallandale Beach), a leading research center in South Florida that specializes in clinical trials for Phase 1-4 and diseases of the central nervous system. Dr. Safirstein is a board-certified Neurologist and Principal Investigator for trials involving patients with neuropsychiatric disorders and internal medicine … Read more

Yean Alfonso, BS, CCRC

Site Director Yean Alfonso, BS, CCRC joined Velocity in 2010 as a data entry operator, then moved to the position of recruiter and administrator. Yean’s dedication and contributions to site operations have made his tenure as Site Director for Velocity Hallandale Beach a success. He is excellent at maintaining long-lasting professional relationships with returning patients … Read more

Margaret Chang, MD

Principal Investigator Margaret Chang, MD is a board certified Family Medicine Physician with more than 25 years experience, including 10 years conducting clinical trials. She received her BA from Rice University and graduated from the University of Miami School of Medicine. She completed her Family Practice Residency at Halifax Medical. Dr. Chang enjoys spending time … Read more