Meet The Team

Vishaal Mehra

Vishaal Mehra, MD, CPI

Board Certified in Psychiatry
CEO and Principal Investigator/San Diego Site (Psychiatry/Neurology Division)

“As the CEO and a Principal Investigator for Artemis, I’m energized by helping to guide this company so we can provide the highest quality data for our pharmaceutical clients and ensure our study patients experience a positive and safe clinical research experience. I love the spirit of what Artemis stands for: superior quality and superior service. It’s a noble goal, and in my heart I believe we can be the best; we can reach this goal as a team. I appreciate our staff and how we all share this vision.”

Dr. Vishaal Mehra attended Texas A&M Health Science Center for his Medical Degree, and then completed his residency in Psychiatry at the University of California, San Diego. He worked in a variety of clinical Psychiatric settings prior to beginning his career as an Investigator in clinical research in 2007. As a Principal Investigator, his main areas of expertise include Schizophrenia, Depression, Bipolar Disorder, and Opiate Addiction. Additionally, Dr. Mehra has worked closely with Sponsors and CROs to promote study-wide trial success, acting as a liaison for other Principal Investigators and the sponsor for several trials. Dr. Vishaal Mehra founded Artemis Institute for Clinical Research in 2008.

Purvi Mehra

Purvi Mehra, MD, CPI

Board Certified in Internal Medicine and Allergy/Immunology
Chief Medical Officer and Principal Investigator/San Diego Site (Internal Medicine Division)

“The relationship I develop with my patients is the most fulfilling part of my work. It is extremely rewarding and the reason I love medicine. I have a desire to help on a larger scale, and conducting research is my way of contributing to the field of medicine. The team at Artemis Research shares my desire to make a difference in this way. Everyone here is committed to the ideals that make this field exciting.”

Dr. Purvi Mehra attended the University of Texas Health Science Center at San Antonio for her Medical Degree. After completing her residency in Internal Medicine at Scripps Mercy, Dr. Mehra went on to complete a fellowship in Allergy/Immunology at Scripps Clinic. She has been a Clinical Investigator since 2004. Her work has been published in numerous peer reviewed journals including the New England Journal of Medicine. Dr. Mehra’s areas of research expertise include Osteoarthritis, Diabetes, Fibromyalgia, and Vaccine development. She joined the Artemis Research team in 2013.

Stacey Layle

Stacey Layle, MD

Board Certified in Family Practice
Principal Investigator/San Marcos Site (Internal Medicine Division)

“As a Principal Investigator, I get to care for my patients and contribute to the field of medicine by assisting in the development of new treatments. It is very exciting and rewarding work, and I feel fortunate to have joined Artemis. It’s invigorating to be part of such a well-organized, first class team doing great collaborative work!”

Dr. Layle attended Wayne State University School of Medicine for her Medical Degree, and completed her residency in Family Medicine at the Naval Hospital Jacksonville in Jacksonville, Florida. She then served as a Medical Officer in the U.S. Navy for 8 years where she cared for Navy and Marine Corps active duty and dependents across the world. She returned to civilian practice working in a variety of primary care clinical settings prior to beginning her career in clinical research. As a Principal Investigator, her main areas of research expertise include Osteoarthritis, Diabetes, Fibromyalgia, and Gastrointestinal illnesses. Dr. Layle joined the Artemis Research team in 2012.

Katrina Patrick

Katrina Patrick, Ph.D.

Principal Investigator/Riverside Site (Psychiatry/Neurology Division)

“As a Principal Investigator, I have the privilege of partnering with the study volunteers to potentially make a real difference in the management of their illness, and therefore their lives, by advancing our understanding of the most effective treatments. I wholeheartedly believe that appropriate subject selection and quality data are an integral part of developing cutting edge interventions. By developing new treatments, we can offer hope to those who find themselves challenged by these diagnoses. I am thrilled to be working with my colleagues here at Artemis who share my passion for conducting first-class clinical trials.”

Dr. Patrick received her Bachelor’s degree in Psychology and Social Behavior from UC Irvine. She then attended Palo Alto University for her Ph.D., where she focused on the study of women with PTSD. She worked extensively with consumers who were chronically and severely mentally ill as she completed her predoctoral internship at the Riverside County Department of Mental Health Blaine Street Clinic. Dr. Patrick then went on to complete her fellowship at Alliant International University where she worked as adjunct faculty and presented papers focusing on the Rorschach scoring system at the national conference for the Society of Personality Assessment. After licensure, she worked as a centralized rater in Phase III psychiatric clinical trials for almost 6 years. Since 2015, she has worked as an Investigator in Phase I and II clinical CNS pharmaceutical trials. As a Principal Investigator, her main areas of research expertise include, Mood Disorders, Schizophrenia, and Alzheimer’s Disease. Dr. Patrick joined the Artemis Research team in 2018.

Eric M. Chavez

Eric M. Chavez MD, MS

Board Certified in Psychiatry and Addiction Medicine
Principal Investigator/San Diego Site (Psychiatry/Neurology Division)

“Details are very important in research, and we focus on details at Artemis. From the details of accurate data collection to the details of managing individual patient needs during a clinical trial, I want to ensure that our research patients are treated with care and professionalism and that our studies are conducted in a safe and efficient manner. I take pride in contributing to progress in the development of new medical treatments and in the evolution of technology in research.”

Dr. Chavez completed his undergraduate degree at Harvard University and his medical degree at the Uniformed Services University of the Health Sciences. After medical school and service in the U.S. Navy, Dr. Chavez completed psychiatry residency at the University of California San Diego and subsequently earned a Master of Science degree in Medical Informatics at Northwestern University. His interests include addiction disorders, depression, bipolar disorder, anxiety, schizophrenia, attention deficit disorder, pharmacogenomics, the application of technology in medicine, and medical information systems. Dr. Chavez joined the Artemis team in 2014.

Ali Gerritsen

Alexandra Gerritsen, MBA

Vice President, Operations

“As the VP of Operations here at Artemis, my goal is to ensure that our patients have the best experience possible while they are at our sites. Driving operational excellence at each location, will ensure our patients’ experience is consistent across each location and that their visits are as efficient as possible. The Artemis Team values both our patients’ and our pharmaceutical clients’ time, and we want to ensure world-class service and data quality during our clinical trials. I am elated to be working at an organization who puts our customers’ experience first!”

Ali attended Georgetown University’s McDonough School of Business for her undergraduate studies in Marketing and International Business. She then attended the University of Southern California Marshall School of Business where she earned her MBA. Ali has worked in both the Operations and Technology fields for over 15 years for publicly traded, privately owned, and private equity owned companies in San Diego. She most recently held an executive leadership position at Cali Bamboo where she was responsible for the Technology and Customer experience strategies at one of the fastest growing companies in the United States. In 2019, Ali was the honoree of San Diego Business Journal’s Top Technology Executive award. She joined the Artemis Research team in 2019.


Study Areas

Contact Us

"*" Indicates Required Information
All information provided is confidential and will not be given or sold to any other agency without prior consent. Click here to view our Privacy Policy.

Hands Around A Heart