The UNC Hemophilia and Thrombosis Center’s dedicated team of hematologists, nurse educators, social worker, pharmacist, research coordinators and support staff provides a range of services from diagnostic evaluation and treatment, to education, care coordination and research.


Adult Hematology


Nigel Key, MB ChB FRCP, Harold Roberts Distinguished Professor of Medicine; Director, UNC Blood Research Center & UNC Hemophilia and Thrombosis Program

Nigel Key, MB ChB FRCP, is an adult hematologist specializing in non-malignant hematologic disorders, particularly those affecting blood coagulation. Dr Key is the Harold R Roberts Distinguished Professor, Chief of the Section of Hematology in the Division of Hematology/Oncology, Director of the UNC Hemophilia and Thrombosis Center as well as Director of the UNC Blood Research Center. A graduate of the University of St Andrews and the University of Manchester Medical School (both in the United Kingdom), Dr Key received his early training in internal medicine in Bath and hematology in Oxford, UK. Following 15 years on the Hematology/Oncology faculty at the University of Minnesota, Dr Key was recruited to UNC in 2005.

Dr Key’s clinical interests include the diagnosis and management of bleeding disorders including hemophilia and von Willebrand disease, as well as arterial and venous thromboembolic disorders. He has authored well over 100 peer-reviewed articles, approximately 20 book chapters, and is co-editor of a popular textbook on disorders of bleeding and clotting.


Raj Kasthuri

Raj Kasthuri, MB BS, Clinical Associate Professor of Medicine

Dr. Raj Kasthuri is an Associate Professor of Medicine in the Division of Hematology and Oncology and is the Director of the UNC HHT Center of Excellence. Dr. Kasthuri earned his medical degree from the Kasturba Medical College in India. He completed his fellowship in Hematology and Medical Oncology at the University of Minnesota. He is a member of the UNC Hemophilia and Thrombosis Center and the UNC Blood Research Center. Dr. Kasthuri’s clinical and research interests are in bleeding and clotting disorders, and HHT.



Alice Ma, MD, Professor of Medicine

Alice D. Ma is a Professor of Medicine and the fellowship director in the Division of Hematology-Oncology at the University of North Carolina School of Medicine in Chapel Hill and is a member of the Harold R. Roberts Comprehensive Hemophilia Treatment Center. Dr Ma received her medical degree from the University of Michigan Medical School in Ann Arbor. She then completed an internship and residency in medicine and a fellowship in hematology-oncology at the Hospital of the University of Pennsylvania in Philadelphia. Dr. Ma is a dedicated physician, researcher, teacher, and leader in the field of hematology and coagulation. She has received numerous teaching awards and authored textbooks and scientific studies, including studies on acquired hemophilia. Her clinical interests are in bleeding disorders, women’s health, and hematology education.


Stephan Moll 2018

Stephan Moll, MD, Professor of Medicine

Dr. Moll received his medical degree from Freiburg University, Germany. He completed an internship and residency in internal medicine and a hematology-oncology fellowship at Duke University Medical Center (1989-1996), during which he also spent a 1-year clinical coagulation fellowship at the University of North Carolina, Chapel Hill (1994-1995). His postgraduate career included a position in clinical coagulation in the cardiology division of the Humboldt University in Berlin, Germany (1997-1999).

Dr. Moll has been a faculty member at UNC in the Department of Medicine and the Division of Hematology-Oncology since 1999. His clinical focus is coagulation, particularly thrombosis and thrombophilia. Dr. Moll’s research interests include clinical trials on new anticoagulants, better use of established anticoagulants, antiphospholipid antibody syndrome and postthrombotic syndrome. He has a major interest in health education of patients, public and health care providers about blood clots and clotting disorders. Dr. Moll is a co-founder of the UNC blood clot education program Clot Connect (


Micah Mooberry photo

Micah Mooberry, MD, Clinical Assistant Professor of Medicine

Micah J. Mooberry is an Assistant Professor of Medicine in the Division of Hematology/Oncology and member of the UNC Hemophilia and Thrombosis Center. Dr. Mooberry earned his medical degree at the University of Arkansas for Medical Sciences in 2004. He then completed a residency in Internal Medicine/Pediatrics at The University of North Carolina from 2004-2008. He subsequently completed a combined fellowship in Adult Hematology and Pediatric Hematology/Oncology at UNC from 2008-2012. Dr. Mooberry’s clinical and research interests include venous thrombosis, anticoagulation therapy, and activation of coagulation in inflammatory disorders. He is involved in both clinical trials and translational research in these areas, in addition to working on optimization of outpatient management and treatment of venous thromboembolism through the establishment of a “Walk-In DVT Clinic.”


Yasmina Abajas
Yasmina Abajas, M.D., Clinical Assistant Professor of Pediatrics

Yasmina Abajas, M.D., joined the UNC Department of Pediatrics in July 2016 as the newest faculty member in the Division of Pediatric Hematology/Oncology. Dr. Abajas, a native of Miami, FL, received her undergraduate and medical degrees and completed her pediatric residency at the University of Miami. She then went on to complete a pediatric hematology oncology fellowship at the University of North Carolina. Dr. Abajas’ primary clinical and research interests are in hemostasis and thrombosis.



Hemophilia Program (

Fran Davis

Fran Davis, RN, BSN, CRNI, Program Manager

Fran joined the staff of the UNC Hemophilia and Thrombosis Center in February 2017 with 33 years of professional nursing experience including clinical nursing with both pediatric and adult patients, home infusion nursing, home infusion discharge coordinator and care management. She has been a nurse at UNC Health Care since 2000. Fran received her Bachelor of Science in Nursing from East Carolina University in Greenville, NC. She received her Certified Registered Nurse Infusion (CRNI) certification in March 2015.


Tracy Griles

Tracy Griles, Coordinator/Scheduler

Tracy joined the UNC Hemophilia and Thrombosis Centerteam in 2009 bringing with her 30 years of experience with customer service, office management and organizational skills. Prior to coming to UNC Tracy developed these skills while operating and being involved in small family businesses. Tracy finds her job rewarding by contributing to the management of patient care and their well-being as well as building relationships with the patients.In her free time, she enjoys gardening, cooking, and especially spending time with family and friends.


Elise Leventry, RN, BSN, CPN

Elise has been a nurse consultant at the UNC Hemophilia Treatment Center since March 2019. She received her Bachelors of Science in Nursing degree in 2013 from Duquesne University in Pittsburgh, PA. A native of Raleigh, Elise began her career in the Adult ICU but returned to the Triangle in 2015 as a pediatric hematology and oncology nurse at UNC Children’s Hospital.  Elise earned her Pediatric Nursing certification in 2017.  She especially enjoys forming relationships with, educating, and being a resource for her patients and their families.


Brenda Nielsen

Brenda Nielsen, RN, MSN, Nurse Consultant

Brenda has been a nurse consultant at the UNC Hemophilia Center since 1992. She received both her Bachelors degree and her Masters degree in nursing at the University of North Carolina at Chapel Hill. She especially enjoys getting to know and working with children, families, and adults with bleeding disorders and watching them develop into independent hemophilia or von Willebrand experts. As an adjunct assistant instructor at the School of Nursing at UNC-Chapel Hill, she serves as a resource for nursing students and faculty about bleeding disorders. She is a member of the Medical Board of Camp Carefree in Stokesdale, NC and is an advocate for providing a camp experience for all kids.


Leunora Ward

Leunora Ward, RN, Nurse Consultant

Leunora has been a nurse consultant at the UNC Hemophilia Treatment Center since 2012. She received her Bachelors of Science in Nursing from Winston-Salem State University and has over 16 years of clinical nursing experience. She especially enjoys teaching adults, children and families self-venipuncture for home factor infusions with the goal of nurturing independence and health promotion within the hemophilia population.


Curtis Gray

Curtis Gray is a licensed clinical social worker at the UNC Hemophilia Treatment Center. He received his undergraduate degree in psychology from North Carolina State University, and his master’s degree in social work from North Carolina Central University. Before working with UNC, Curtis worked in the mental health field as an outpatient psychotherapist and intensive-in-home therapist with adults and children. Curtis has been with the UNC Hemophilia Treatment Center since December, 2016 and has a special interest in pediatric to adult patient transition needs, as well as, accessibility of mental health resources, medical care, and community resources for patients.


Kristy Lee

Kristy Lee, MS, CGC, Genetic Counselor

Kristy Lee is a Certified Genetic Counselor and Associate Professor in the Department of Genetics at the University of North Carolina at Chapel Hill. Ms. Lee received her undergraduate degree from North Carolina State University and a Masters degree in Genetic Counseling from the University of North Carolina at Greensboro. She specializes in genetic counseling for patients and their families with bleeding disorders and the visually impaired. Her research interests involve examining the effectiveness and implementation of whole genome/exome analyzes and novel gene discovery for coagulopathies and retinal dystrophies.


Jennifer Newman, MSPT, Physical Therapist

Jennifer Newman is a physical therapist involved with the UNC Treatment Center since 2011. Jennifer received her undergraduate and masters degree in physical therapy from Ithaca College in 2003. Her involvement began in the bleeding disorders community in 2010 at the Oregon Hemophilia Treatment Center. Jennifer serves on the Chair of the Physical Therapy Working Group for the National Hemophilia Foundation and is a member of the MASAC Pain Initiative. She specializes in pediatric physical therapy with special interest in aquatic physical therapy. She received her Certificate in Aquatic Physical Therapy Clinical Competency (CAPTCC) in 2017.


Kristi Kirkland, BS, CPhT, Data Coordinator

Kristi Kirkland joined the UNC Hemophilia and Thrombosis Center in November of 2019. Kristi received her Bachelors of Science in Public Health from the University of North Carolina at Greensboro and received her Pharmacy Technician Certification (CPhT) in April 2013. Kristi has always had a passion with helping others and working within the public health. Coming to the UNC Hemophilia Treatment Center and getting a chance to impact the research, treatment and health of people with hemophilia by transforming and transferring data for analysts has been a honor.


Virginie Sirianna

Virginie Sirianna, Southeast Regional Hemophilia Network Coordinator/RIVN Coordinator

Virginie Sirianna joined the UNC Hemophilia and Thrombosis Center in May of 2015. Virginie received her Bachelors of Science in Chemistry from North Carolina State University and received her Pharmacy Technician Certification (CPhT) in April 2013. The Southeast Region receives federal funding from the Maternal and Child Health Bureau and the Centers for Disease Control and Prevention to provide comprehensive care and prevention services to persons with bleeding disorders.