CSP Team
CSP Leadership


Ana Marquez, MSF
Executive Vice President
Ana T. Marquez, MSF, CRCP, is the co-founder of Clinical Site Partners, LLC. Ana is the Chief Diversity Officer for Flourish Resarch. Ana has experience
coordinating protocols, building teams, expanding therapeutic indications, auditing trials, creating site
processes and implementing administrative/financial policies to increase site efficiency. Ana has also
negotiated hundreds of clinical trial agreements and budgets. Additionally, she assisted numerous
research facilities with site expansion, A/R process implementation, and new investigator training. At the
sponsor level, Ana has served as a consultant on Phase I-IV projects assisting with the feasibility process,
protocol design, building trial budgets, and aiding with site selection.
Ana is highly proactive in the research industry, presenting at major industry conferences, serving on
various Sponsor/CRO advisory groups through SCRS and ACRP. She has also served as a Committee
Chairman for global organizations such as DIA and SCRS. Ana holds a Master of Science degree in
Finance from Florida International University.
Faisal A. Fakih, MD
Chief Medical Director
Dr. Faisal A. Fakih is the Co-Founder, and Medical Director of Clinical Site Partners, LLC (CSP) He is triple Board-Certified in Pulmonary, Sleep, and Internal Medicine. Because he’s been practicing in the Winter Park area for over 40 years, Dr. Fakih is well known and respected by his patients, staff members, and colleagues.
Dr. Fakih has been conducting Phase I-IV research for the past 19 years and has expertise in areas such as Asthma, COPD, Diabetes, Rheumatology, Insomnia, Neurology, CNS, Nephrology, Internal Medicine, COVID-19, and vaccines. He is a sought-out key opinion leader who CROs and Sponsors often consult for input on protocol creation and trial design. The sites, under Dr. Fakih’s direction, have been the go-to site network for respiratory, COVID, and vaccine trials, as they are known to meet and exceed enrollment goals.
In addition to his role at the sites, Dr. Fakih also donates his time as a Physician at non-profit organizations to ensure that patients lacking the means to obtain medical care are not ignored. He graduated from the School of Medicine of Universidad de Zaragoza, Spain.
Meet the Investigators
Faisal A. Fakih, MD
Chief Medical Director
Dr. Faisal A. Fakih is the Co-Founder, and Medical Director of Clinical Site Partners, LLC (CSP) He is triple Board-Certified in Pulmonary, Sleep, and Internal Medicine. Because he’s been practicing in the Winter Park area for over 40 years, Dr. Fakih is well known and respected by his patients, staff members, and colleagues.
Dr. Fakih has been conducting Phase I-IV research for the past 19 years and has expertise in areas such as Asthma, COPD, Diabetes, Rheumatology, Insomnia, Neurology, CNS, Nephrology, Internal Medicine, COVID-19, and vaccines. He is a sought-out key opinion leader who CROs and Sponsors often consult for input on protocol creation and trial design. The sites, under Dr. Fakih’s direction, have been the go-to site network for respiratory, COVID, and vaccine trials, as they are known to meet and exceed enrollment goals.
In addition to his role at the sites, Dr. Fakih also donates his time as a Physician at non-profit organizations to ensure that patients lacking the means to obtain medical care are not ignored. He graduated from the School of Medicine of Universidad de Zaragoza, Spain.
Mark Rosenthal, MD
Principal Investigator
Dr. Rosenthal is board certified in family medicine and sleep medicine. He is a graduate of the University of Pennsylvania and the New York Institute of Technology College of Osteopathic Medicine. He completed his residency in Family Medicine through Nova Southeastern University in 1990 and has been practicing medicine in South Florida ever since.
Dr. Rosenthal has extensive research experience. He has served as an investigator with Clinical Site Partners and Flourish Research for over 10 years. He has served as a principal investigator in numerous studies in areas including COPD, asthma, hypertension, sleep medicine, and vaccinations. He was also the principal investigator in multiple studies involved in the development of medications for the prevention and treatment of COVID-19. Dr. Rosenthal developed the hospitalist program at Jackson South Community Hospital and concentrated on treating uninsured patients. He has held numerous positions of leadership in both the Jackson Health System and Baptist Health South Florida.Jose Louis Diaz, MD
Principal Investigator
Dr. Jose Louis Diaz is our Medical Director and PI. Dr. Diaz is in our Leesburg location. He has over a decade of experience diagnosing and treating disorders of the lungs.
Throughout his career, he has built an exceptional reputation and is well respected throughout the medical community and serves as Chairman of the Pulmonary Division at Central Florida Health Alliance as well as the healthcare system’s Chairman of the Special Care and the Antibiotic Committee. Clinical Site Partners, LLC is proud to note that Press Ganey Associates, a national health improvement firm, recently ranked Dr. Diaz in the top 10% nationally for patient satisfaction.


Monica Aggarwal, MD
Principal Investigator
Monica Aggarwal, MD, is an adjunct Associate Professor in the University of Florida’s Division of Cardiovascular Medicine where she conducts research on the impact of nutrition in chronic illness. She also serves as the Chief Medical officer of the not-for profit, 4Roots Farm which is looking at how to improve food quality to improve human health. She received her medical degree from Virginia Commonwealth University School of Medicine and subsequently went on to complete a residency in internal medicine at Tufts University Hospital in Boston, MA. She then completed a cardiology fellowship at the University of Maryland in Baltimore, MD.
Dr. Aggarwal’s own path to understanding the impact of nutrition in illness started soon after the birth of her third child, when she developed an advanced form of rheumatoid arthritis. She was placed on medications that gave her severe side effects. It was only through learning about the microbiome (gut), its impact on the immune system and the role of nutrition in affecting the gut, was she able to truly heal. Determined to change the face of medicine, Monica left private practice and returned to academics in order to pursue research on the role of diet and to create an integrative cardiology practice focused on nutrition and lifestyle.
Dr. Aggarwal served as the Director of Integrative Cardiology and Prevention at the University of Florida for 5 years during which time she was promoted to Associate Professor of Medicine. At University of Florida, she focused on promoting food as the foundation of healing and for its medicinal value. In her clinic, she emphasizes plant-based nutrition and often performs multiple mind-body techniques with her patients, including yoga and meditation. At University of Florida, she was also the Director of Medical Education for Cardiology, where she directed education for medical residents and cardiology fellows, with a focus on prevention, nutrition, and lifestyle. In the hospital, she has multiple initiatives including developing a 100% plant-based menu for cardiac and vascular patients.
Dr. Aggarwal gives talks around the community, country and internationally. She was named a “Next Generation Innovator” by Cardiology Today. She is often featured in Veg News, Naked Magazine and forksoverknives.com. She conducts research on nutrition education in medical institutions and on how a plant-based diet impacts cardiovascular disease. She has published in major medical journals such as Journal of American College of Cardiology and American Journal of Medicine.
Board-certified in cardiology and three specialties of cardiology: echocardiography, nuclear cardiology and advanced lipid management, she is a fellow of the American College of Cardiology (ACC), where she is a member of the nutrition council working on nutrition policies
for the nation. Dr. Aggarwal specializes in preventive management of heart disease with lifestyle techniques in conjunction with medications. She is the author of the book “Body on Fire: How Inflammation Triggers Chronic Illness and the Tools We Have to Fight It,” which outlines prescriptions to help guide people to better health and the recently released Body on Fire Cookbook which provides whole food, healthy recipes to help implement change.
She has instituted a new plant-based menu at the University of Florida/Shands Hospital which is receiving national attention along with new discharge education that empowers patients to heal their bodies with their lifestyles. She was recently named Florida’s Cardiovascular Researcher of the year which provided her with a grant to conduct the important research needed on nutrition in 2019 and Exemplary Teacher of the Year in 2020.
