Physicians and Staff

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, Director, UNC Hemophilia and Thrombosis Center


Raj Kasthuri

Raj Kasthuri, MBBS, MD



Alice Ma, MD

Alice D. Ma is an Associate 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, M.D.

Stephan Moll, MD

Micah Mooberry photo 

Micah Mooberry, MD

Marshall Mazepa, MD

 Marshall Mazepa, MD

Pediatric Hematology

Brent Weston 

Brent Weston, MD

Board certified in pediatrics and pediatric hematology/oncology, Dr. Weston cares for patients with diverse and rare bleeding and clotting disorders. He also maintains an active oncology practice.  His patients have access to the latest pediatric hematology and oncology multi-institutional protocols. Dr. Weston received his MD at Duke University, did his pediatric residency at UNC-Chapel Hill, and his fellowship and post-doc at the University of Michigan. He has been an attending physician at UNC-Chapel Hill since 1992 and has mentored many physicians in both research and clinical settings.


Hemophilia Program (

Tracy Griles

Tracy Griles, Administrative Support Associate


Brenda Nielsen May 2015

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, RN

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.  


Sally Wright 6-2015

Sally Wright, MSW, LCSW, Clinical Program Manager

Sally has been the social worker at the UNC Hemophilia Treatment Center since 2005 and the Clinical Program Manager since 2011.  She received both her BSW and MSW from West Virginia University.  While prior work experience has been in the field of developmental disabilities and pediatrics, she enjoys working with people of all ages and has a particular interest in quality of life and long-term care issues facing the aging population.    She is a member of the National Association of Social Workers’ Academy of Certified Social Workers and is a Licensed Clinical Social Worker in North Carolina. 

Kristy Lee 6-2015

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. 


Cathy L. Howes, RPT, Physical Therapist


Jennifer Newman

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.  She specializes in pediatric physical therapy with special interest in aquatic physical therapy. Her involvement began in the bleeding disorders community in 2010 at the Oregon Hemophilia Treatment Center.  Jennifer serves on the Physical Therapy Working Group for the National Hemophilia Foundation.  


Steven Humes 

Steven Humes, MM, MPH, Regional Coordinator, Region IV-North Hemophilia Treatment Center Network

Steven Humes is the Regional Coordinator for the Region IV-North Hemophilia Treatment Center Network based at UNC-Chapel Hill.  He has worked in public health for over 20 years, with experience in HIV prevention at the American Red Cross in Greater New York and at Gay Men’s Health Crisis in New York. He also oversaw educational and research programs during a ten-year stint at the National Hemophilia Foundation in New York. He holds an MPH with a concentration in Community Health Education.

Virginie Sirianna

Virginie Sirianna, Data Coordinator


Research and Clinical Trials

Robin Kellerman

Robin Kellerman, RN, BSN, MSS, Nurse Consultant

Robin Kellerman has been part of our clinical research team since 2008. She received her Bachelor of Science in Nursing from Clemson University, and holds a Master of Sport Science degree in Fitness Management. She has nearly 30 years of professional experience including clinical nursing, project management and research coordination covering a diverse range of medical conditions.  Robin focuses her work efforts on all aspects of our clinical research program including bleeding and clotting disorders as well as our translational medicine projects.


Cheryl Jeanneret

Cheryl C. Jeanneret, Clinical Research Coordinator

Cheryl began her medical career as a Respiratory Therapist and practiced for 11 years. An interest in research changed her focus to study coordinating. Now as a study coordinator for several years she has managed clinical trials that focus on patients with bleeding or clotting disorders.



Christine Hill

Christine Hill, University Program Specialist

Christine Hill joined the Hemostasis and Thrombosis Program at UNC-CH in 2007.  Ms. Hill also works with the UNC HTC Pharmacy.  She collaborates with the Program Manager to develop and expand the Pharmacy Program.  Her responsibilities within the pharmacy include assuring compliance with policies and procedure, development of patient education marketing materials, and accreditation management.   She manages several programs and projects associated with the Hemostasis and Thrombosis Program along with the Pharmacy Program.