Team Credentials

Krystle Calvin – Site Director, Certified Clinical Research Professional. A results-driven Clinical Research Manager with extensive experience directing clinical trial operations, optimizing site performance, and ensuring regulatory excellence. Proven leader in managing cross-functional teams, negotiating study budgets, and executing complex protocols across multiple therapeutic areas.

Recognized for implementing strategic process improvements, enhancing patient recruitment, and maintaining audit-ready environments aligned with FDA and GCP standards. Combines strong operational leadership with hands-on clinical expertise to deliver high-quality research outcomes and drive organizational success. Currently advancing expertise through a Bachelor’s degree in Healthcare Administration.

Antonia Hammond – VP of Finance & Business Development. A Healthcare Operations and Risk Management professional transitioning into Clinical Research, bringing a strong foundation in medical claims payments, regulatory compliance, and data analysis. Passionate about enhancing healthcare outcomes and committed to supporting clinical research initiatives through data integrity, patient-focused processes, and operational excellence.

Dr. Muhammad H. Hasan – Principal Investigator. A board-certified nephrologist at Advocate Christ Medical Center, UChicago Ingalls Hospital, and OSF Little Company of Mary. He specializes in kidney failure, hypertension, and dialysis, and is active in research and professional societies. Dr. Hasan graduated first in his class from the University of Aleppo and is dedicated to compassionate, patient-centered care.

Dr. Mohammad Matari – Sub Investigator. A board-certified internist, nephrologist and hypertension specialist at Kidney and Hypertension Associates.  He specializes in chronic kidney disease and hypertension functions, and earned a Master’s Degree in clinical research.  Dr. Mataria graduated from the University of Mosul, and has contributed to several Journal Publications. 

Dr. Adel Samad – Sub Investigator. A board-certified nephrologist at Kidney and Hypertension Associates. He is trained and experienced in a wide variety of health conditions and clinical disorders associated with Nephrology and has been recognized for providing the highest standard of patient care.

Dr. Mazen Diab – Sub Investigator.  Board-certified and trained in internal medicine/nephrology at Kidney and Hypertension Associates.   He is trained and experienced in clinical disorders associated with hypertension and Nephrology and has been praised by patients for his caring attitude, thoroughness, and his ability to explain complex medical conditions.