Fellows Bios

Nazleen H. Bharmal, MD, PhD, MBA MPP is the Chief Health Equity Officer at Stanford Health Care and Clinical Associate Professor in the Department of Medicine, Division of Primary Care and Population Health. She was previously on the Value Based Operations Team at Cleveland Clinic and served as the Associate Chief of Community Health & Partnerships where she worked with an interdisciplinary team to implement a community health strategy focused on health equity, social determinants of health, and partnerships with community stakeholders. Dr. Bharmal practices primary care internal medicine focused on disease prevention and health promotion. Her other experiences include serving as the Director of Science and Policy at the Office of the Surgeon General in the U.S. Department of Health and Human Services and as a clinician-investigator at the RAND Corporation and UCLA Department of Medicine, Division of Health Services and General Internal Medicine with a research focus on health disparities, chronic disease prevention, and social determinants of health using quantitative, qualitative, and community-based participatory research methods.

Nazleen has published in several scientific journals and received awards for her public health research and leadership activities. She received her MD from Harvard Medical School, PhD in health policy and management from the UCLA Fielding School of Public Health, MBA from the Yale School of Management, and MPP from the John F. Kennedy School of Government.

Karen Orjuela is a fellowship-trained vascular neurologist, neurohospitalist, assistant professor and clinical researcher studying acute neurological care and associated outcomes at the University of Colorado. She completed her medical school training at the Universidad Nacional de Colombia, in her hometown Bogota (Colombia) then, she moved to the United States where she graduated as a neurologist and vascular neurologist from Loyola University of Chicago. She earned a master’s degree in clinical research from the University of South Carolina and began participating in industry-sponsored and investigator-initiated research studies. Noting the lack of representation of minorities in cardiovascular disease research coupled with their overrepresentation in her clinical practice, Dr. Orjuela is actively seeking to address this disparity.

Karen is also the Co-Director of Diversity, Equity, and Inclusion for the Department of Neurology at her institution. She is a member of international neurological societies and scientific journal's editorial boards. She is an emerging leader in neurohospitalist education and community-based participatory neurology research.

Alicia is the CEO of OLE Health, a federally qualified health Center that provides comprehensive primary health care services to low-income children, families, and individuals in Napa and Solano Counties. She develops OLE’s strategic priorities, ensures the delivery of high-quality services, and participates in advocacy, fundraising, emergency, and disaster response to ensure that all members of the community have access to high-quality care. In October 2023, OLE Health is merging with another federally qualified health center in Yolo County, which will allow for more service expansion across three counties, serving roughly 71,000 patients per year.

Prior to joining OLE in 2009, Alicia worked with vulnerable communities in Peru and Nigeria and co-founded a charter school in the South Bronx. She is an LCSW by training and has provided behavioral health care at both the VA Hospital in San Francisco and OLE Health. Since being promoted to CEO in 2018, Alicia has expanded OLE Health’s mobile outreach services and opened three additional clinic sites. She continues to pursue expansion opportunities that will increase access to care, address social drivers of health and advance health equity in our communities.

Tamaan K. Osbourne-Roberts, MD, serves as Chief Medical Officer (CMO) and Vice President of Health Strategy for Colorado Access, a Colorado-based non-profit health plan serving more than 675,000 Medicaid and CHP+ members. Previously, he served as CMO of Colorado Medicaid and concurrently as CMO of Colorado’s All-Payer Claims Database, as well as served as a regional medical director with the value-based care startup Aledade. A former member of the Colorado Public Health Service Corps, he continues to practice clinically, and has spent the majority of his career meeting the needs of underserved low-income Spanish-speaking communities throughout urban and rural Colorado. Additionally, he holds policy development roles with the American Medical Association and the American Academy of Family Physicians, where he has co-authored policy on support of the Affordable Care Act, excessive use of force in policing, and data infrastructure. He speaks six languages, three fluently. 

Dr. Osbourne-Roberts completed his B.A. in English/Biology at Williams College and his M.D. and family medicine residency at the University of Colorado. He enjoys Trinidad Carnival, capoeira, mountaineering, freediving, spearfishing, cooking, and time with his wife and children. 

Fatimah serves as Vice President of Health Resources in Action, a Boston-based public health institute. In this capacity, she also serves as the inaugural Executive Director of the Kaiser Permanente Center for Gun Violence Research and Education (GVRE) and Executive Director of The Health Alliance for Violence Intervention (HAVI). The KP Center for GVRE is a $25M initiative which seeks to elevate the value and impact of health-focused solutions to gun violence through research grants and national education initiatives. The HAVI is a healthcare organization that has developed and scaled a model of care, called HVIPs, to treat violently injured patients. The HAVI has a presence in 85 markets in the United States. 

Fatimah currently involved in initiatives to support the Biden Administration on healthcare policy, spearheading the securing of over $10B of federal investments as well as reimbursement mechanisms for HVIPs. She has attracted notable supporters of the HAVI, including Steve Ballmer, former Microsoft CEO and Arthur Blank, co-founder of The Home Depot. 

Fatimah’s work and thought leadership has appeared in numerous media outlets including CNN, Washington Post, NPR, TIME, NY Times, Health Affairs, Politico, AP, and more. Her work has also appeared in Nature, Journal of Adolescent Health, Journal of the American College of Surgeons, American Journal of Public Health and more. She is a psychotherapist by training and a proud Phi Beta Kappa graduate of the University of Pennsylvania. 

Cecelia Calhoun, MD, MPHS, MBA, is an Assistant Professor of Medicine and Pediatrics at Yale University School of Medicine where her clinical and research expertise center on the care of persons with Sickle Cell Disease (SCD) She also serves as the Medical Director of the Adult Sickle Cell Program at Smilow Cancer Hospital

Dr. Calhoun uses mixed methods to find solutions to the educational and healthcare obstacles critical to the longevity of adolescents with sickle cell disease. She has dedicated her career to the design and implementation of evidence-based interventions that promote successful transition from youth to adult care for the sickle cell population. As an NIH funded investigator, she collaborates with her hematology colleagues across the nation to use Implementation Science methods to improve outcomes for patients with sickle cell disease throughout their lifespans.

Dr. Calhoun graduated from the University of Michigan with a Bachelor of Arts degree in Afro-American Studies and Medical Doctorate from Wayne State University. She continued her training at Michigan State University as a pediatric resident, then fellowship at Washington University School of Medicine where she also completed a Master of Population Health Sciences. She received her MBA as one of three, inaugural Pozen-Commonwealth Fund Fellows in Minority Health Leadership at Yale University School of Management.

Crystal Yates is the Deputy Managing Director of Health and Human Services for the City of Philadelphia. She oversees the city’s health and social services portfolio, including the Department of Behavioral Health and Intellectual disAbility Services, Philadelphia Department of Public Health, Office of Homeless Services, Office of Domestic Violence Strategies, Mayor’s Commission on Aging and Overdose Response Unit.

Crystal has over 23 years of experience in the fire and EMS industry. She previously served as Deputy Commissioner of Administration and Finance and Assistant Deputy Commissioner of EMS, gaining extensive leadership experience. In 2014, she led the effort to launch the EMS Community Risk Reduction and Mobile Integrated Health Unit which pursued innovative strategies to use patient-centered, mobile resources to reduce unplanned hospital visits and connect patients with substance use disorder to necessary care.

Crystal is a long-time partner of the FIRST Center. During her time at PFD, she mentored the Firefighter Injury Research, Epidemiology, and Evaluation (FIRE) Fellows each summer, providing insight on EMS work from her time as both a paramedic and an EMS leader at PFD.

Her healthcare background is diverse and includes prehospital care, health insurance experience, and strengths-based family coaching. Crystal is passionate about health equity and has served on a structured community action team focused on reducing maternal mortality. She was a member of the Advisory Committee for Cities Changing Diabetes in Philadelphia. She participated in the Philadelphia Resilience Project and OD Stat overdose mortality review committee. She also served as an EMS consultant for Primary Maternity Care in Milford, Connecticut.

Crystal received a BS in Professional Study from West Chester University of Pennsylvania. She also completed a certificate program at the Thomas Jefferson University Municipal Innovation Academy. She is a Philadelphia Leadership alumna.