Ella brings over 20 years of experience in the medical field, supporting patients and providers in a variety of roles, from front desk operations to hands-on patient care. She is deeply passionate about helping every patient feel heard, valued, and cared for, taking the time to guide them through their care journey with empathy, patience, …
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Shadrack Awuah, MD
Shadrack Barffour Awuah, M.D. is a compassionate physician and researcher currently serving as a Transitional/Chronic Care Intern at the Washington Health Institute (WHI). He earned his medical degree from Ternopil National Medical University in Ukraine and practiced medicine for three years in Ghana, providing comprehensive care to diverse communities. At WHI, he supports chronic care …
Hannah Cormier, MPH
Hannah Cormier joined WHI in August, 2025, as an Operations Clinical Assistant. She is from Rochester, New York, and received a bachelor’s degree in biomedical sciences and a bachelor’s degree in sociology from the Rochester Institute of Technology in 2023. While getting her bachelor’s degree, she worked in Psychology research laboratories and was a teaching …
Genesis Mercado, MD, HIVPCP, HIVPNC, CCMA
Genesis Mercado is a licensed medical doctor from Manila, Philippines, with over 10 years of experience in the medical field, specializing in internal medicine and community healthcare. He is also a Certified Clinical Medical Assistant, an HIV Prevention Certified Provider, a Certified HIV PrEP Navigator, and a Kidney Health Coach through the American Kidney Fund. …
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Nii Saul Quaynor-Mettle, MBBS
Nii Saul Quaynor-Mettle is a dedicated medical professional from Ghana, West Africa, holding a Doctor of Medicine degree from I. Ya Horbachevsky Medical University in Ukraine. Passionate about humanitarian work, he has been actively involved in medical outreaches, screening, treating, and working to eradicate tropical diseases in his community while completing his clinical internship. Now …
Lisa Massa, MPH, BSN, RN
Lisa Massa joined Washington Health Institute in August 2024 as the Registered Nurse Care Manager. Originally from Pennsylvania, she graduated from Cedar Crest College in Allentown, PA with a Bachelors of Science in Nursing in 2011 , working in medical-surgical/trauma and orthopedics before transitioning to primary Care in 2014. She then moved to Virginia and …
Sandy Aguilar
Sandy Aguilar has been working in the medical field since 2018 in several different specialties. She loves acquiring new knowledge to contribute to her team and the improvement of their care of their patients. She also attends University of Maryland Global Campus, majoring in Cyber-Security. Outside of work, Sandy keeps up-to-date with the cultural life …
Jennifer Zelaya, CMA
Jennifer Zelaya has enthusiastically served the WHI patients as a medical assistant since June of 2020. Born and raised in Washington, DC, she proudly claims herself as an “Uptown DC” Washingtonian with Salvadorean roots. She graduated from Medtech College in 2011 where she earned her Medical Assistant Certification. Her dream is to further assist the …