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University of Colorado Cancer Center

University of Colorado Cancer Center, A National Cancer Institute-designated Comprehensive Cancer Center

Colorado Colorectal Screening Program Staff


Andrea (Andi) Dwyer, BS, Integration Manager

Andi is the Integration Manager and a Project Director at the University of Colorado Cancer Center and the Colorado School of Public Health. Andi was a key member of the team who developed and implemented patient navigation of the Colorado Colorectal Screening Program (the Program), one of the largest screening and early detection navigation programs in the country. She has worked for nearly ten years in the area of colorectal cancer prevention and health promotion and authored several papers in the field. Andi is also an instructor for the Colorado Patient Navigation Training. She serves as the Project Director for the Colorado Cancer Prevention and​ Control Research Network, jointly funded by Centers for Disease Control and Prevention (CDC) and National Cancer Institute (NCI) and is working in the area of dissemination and implementation research.  Andi is the out-going chair of the Colorado Colorectal Task Force and Co-Chair of Scientific and Evidence Based Health Interventions of the National Colorectal Cancer Roundtable.


Ashley Abeyta, Program Coordinator

Ashley began working for the University of Colorado in 2004 in the Computer Assisted Telephone Interviewing Research Unit. Through her hard work and dedication, she worked her way up to a management role in 2009, where she assisted 15 different projects over the years  and managed as many as five per quarter. In 2012 she joined the Colorado Colorectal Screening Program team to further her skills. As the Program Coordinator, Ashley is the main point of contact for the Program and can direct any questions to the appropriate staff member. She also provides assistance with day to day billing and invoicing, coordinates all Program trainings and assists with the coordination of all Media In-reach/Outreach. In addition, Ashley maintains and updates the Program website and contact database.


Carol Brown
, PhD, Evaluation Director


Carol received her PhD in Psychology from the University of Southern California. She has been supporting evaluation activities for the Program since 2009. Program activities include conducting an annual needs assessment to determine overall program need and screening allocations, reviewing program satisfaction surveys and reviewing annual and comprehensive reports for distribution. Carol is interested in program evaluation and using data for program improvement.



Dennis Ahnen
, MD, Chair, Medical quality Assurance Committee (MQAC)


Dr. Ahnen completed his Medical School Training at Wayne State University, completed a Medical Residency and Chief Residency at Hutzel Hospital both in Detroit Michigan, completed his Fellowship at the University of Colorado in Gastroenterology and completed a Membrane Pathobiology Fellowship at Stanford University.  Dr. Ahnen is currently a Professor of Medicine at the University of Colorado, School of Medicine. His research interest is in understanding the process of colorectal cancer and its prevention. His laboratory has conducted both basic and clinical investigations related to this issue. Additionally, Dr. Ahnen currently has 5 active grants from the National Cancer Institute and has published over 250 basic science and clinical papers. Dr. Ahnen serves at the chair of the Medical Quality Assurance Committee for the Program and provides clinical guidance related to CRC screening and treatment issues.


 Holly Wolf, PhD, MSPH, Program Leader

Holly received her Bachelor of Arts from Wellesley College, Master of Science and Doctorate of Philosophy in Bacteriology from the University of Wisconsin and Master of Science in Public Health from the University of Colorado, Denver, School of Medicine. Holly currently directs the Colorado Colorectal Screening Program for the medical underserved.  She is also the principal investigator, project epidemiologist and/or project manager for several research and public health service programs fo​cused on cancer prevention and control including several assessments around cancer screening and the delivery of care. Additionally, Holly is an assistant professor in Community and Behavioral Health and Epidemiology at the Colorado School of Public Health and teaches community health assessment, program evaluation and project management. Her professional interests include public health and health reform, especially as it relates to chronic disease prevention and control and community mobilization. Holly is an active member of state and national coalitions, including the Colorado Cancer Coalition, serving as past Chair and executive committee member, as well as the National Colorectal Cancer Roundtable steering committee and Co-Chair of the Policy Task force.  Holly believes it is a very exciting time to increase the role of public health in improving the health of Americans.


​Keavy McAbee, MPH, Clinical Services Coordinator

Keavy earned her Master’s in Public Health from the Colorado School of Public Health at the University of Colorado. Keavy has worked in public health on health care policy, grassroots advocacy, and quality improvement in clinic systems. She has been involved in efforts to increase colorectal cancer screening through national and state policy initiatives, and by working with safety net clinics across Colorado. Keavy is currently the Clinical Services Coordinator for the Program and also coordinates the Colorectal Cancer Control Program at the University of Colorado Cancer Center. Her research interests include preventive health for cancer, health care policy, and access to care in rural areas.


Latashia (Tashia) Warren, MPH, MSW, LCSW, Patient Navigation Coordinator

Tashia is a Public Health Clinical Social Worker.  She received her Bachelor of Arts in Psychology from the University of Colorado, Boulder; Master of Social Work from Howard University; and Master of Public Health from University of Colorado, Denver.​ As a Licensed Clinical Social Worker (LCSW), Tashia worked for over t​en years in various arenas providing clinical, behavioral health, counseling and case management services to individuals and families. Tashia furthered her service by expanding into public health focusing in the area of community and behavioral health.  Currently, Tashia serves as the Patient Navigation Coordinator with the Program.  Her primary focus is to ensure patient navigators at the partnering community health clinics have the training, resources and expertise to guide eligible patients through the colorectal cancer screening and/or treatment processes. Tashia is also the Program eligibility contact and manages the Program’s cancer treatment cases/database.  Tashia's professional interests include chronic disease, determinants of health and health equity.


Lori Workman, Accounting Services Coordinator

Lori has 25 years of public education accounting experience with the Department of Education in California.  Currently her focus with the Program is provider billing, grant accounting and general fiscal services. Lori has always felt that her job was to b​e t​he best mother she could be and working “just allowed us to have fun!” She is the mother of 2 beautiful, highly successful daughters and grandmother of one “princess in training.” Lori’s professional interests include interior design, home staging and creative arts. 


Shannon Pray, MSPH, Evaluation Coordinator

Shannon has a Master of Science in Public Health degree in Epidemiology from Emory University. Her background is in math and biology. Before joining the Program in 20​11, Shannon worked in evaluation in tobacco at the University of Colorado. She also has experience working for the State Health Department in outbreak investigation and with the CDC in both Asthma and Tuberculosis surveillance programs. Currently, Shannon fields all the eCaST questions, helps with updates to the eCaST system, runs the data analyses and writes many of the reports produced by the Program.

Sheryl Ogden, RN, BSN, Program Manager

Sheryl is a Registered Nurse and received her Bachelor of Science degree in Nursing from the University of Northern Colorado. She has over 30 years of oncology nursing/clinical trials research experience; 19 of those years with the NCI sponsored Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial at the University of Colorado Cancer Center. Sheryl joined the Program in October 2012.​ Her current duties include, overseeing program activities and the budget, working with navigators for patients requiring treatment, reporting Program progress to Cancer,  Cardiovascular Disease, Pulmonary Disease/Colorado Department of Public Health and Environment and supervising staff.  Sheryl’s professional interests are oncology, patient navigation and cancer screening.