ACPM Fellows

Olabisi Badmus, MD, MPH, FACPM, is board certified in general preventive medicine and public health and occupational medicine. During her career she has served in public health practice as a medical officer and public health physician in local and state health department settings. She also is involved in graduate medical education as a former preventive medicine residency program director at the University of South Carolina and currently holds faculty appointments at multiple academic institutions as an instructor of clinical medicine and public health.

She has served on various committees in service to ACPM, most recently as ACPM’s liaison to the Council on Linkages Between Academia and Public Health. In her current role as the Director of Medical and Community Partnerships at Wingate University, she collaborates with community-based partners to achieve goals that enhance training opportunities for learners and address the health needs of the community.

Dr. Badmus completed her medical training at the University of Cincinnati College of Medicine, internship in pediatrics at the University of Chicago and her preventive medicine residency at Morehouse School of Medicine in Atlanta, along with earning a Master of Public Health degree. Following residency Dr. Badmus completed a fellowship in public health practice at the New York City Department of Health.

Christina Holt, MD, MSc, FACPM, is a family medicine and preventive medicine physician at Maine Medical Center, director of the MMC Leadership in Preventive Medicine training program, and a Health Service Researcher. Her expertise is in health service research in primary care with a focus on prevention, implementation and community medicine, with a focus is on developing practice-based research capacity in academic primary care and rural practice training programs through studying and improving clinical preventive services, addiction services and risk factor reduction in Maine.

Dr. Holt’s research support and projects have involved understanding how rural practices implement best practices and how immigrant and refugee practicing physicians and patients make decisions with patients in settings of low resources and with uncertain information. As the Leadership in Preventive Medicine Program Director, she has developed curriculum and clinical and research collaborations throughout the Maine Medical Center’s clinical and geographical service area. This program has helped to span the gap between clinical training and public health practice and to research best practices and quality improvement tools. As principle investigator of the HRSA PrevME: Preventive Medicine Enhancement for Maine grant, Dr. Holt’s goal is to create a program of research and teaching about preventive services and education for providers across the state of Maine and including primary and specialty care content. With Dr. Holt’s leadership, the Maine Medical Center is developing curriculum to teach about mitigating barriers to care for vulnerable populations and non-English speaking patients, as well as developing learning modules around chronic disease prevention through diet and physical activity.

Yuri T. Jadotte, MD, PhD, MPH, FACPM, is Assistant Professor and Associate Program Director of the Preventive Medicine residency at Stony Brook University (SBU). Board certified in general preventive medicine and public health, he also serves as associate professor and assistant director of the Northeast Institute for Evidence Synthesis and Translation at Rutgers University. Dually trained as a physician and social scientist, Dr. Jadotte actively conducts research addressing health equity for disadvantaged populations, with a focus on interprofessional collaboration, cancer prevention and control, and systematic review and meta-analysis.

He has been engaged in several funded projects, including as principal investigator for a completed R03 methods research study focused on developing novel meta-analytic methods to measure the impact of having multiple chronic conditions on health outcomes, and as co-investigator and lead project curriculum developer and evaluator for a 5-year Health Resources and Services Administration training grant awarded to the residency program in General Preventive Medicine and Public Health at Stony Brook.

He currently serves as the Founding Editor-in-Chief of AJPM Focus, the official open access journal of the American College of Preventive Medicine and the Association for Prevention Teaching and Research, and an ex officio member of the governing board of the American Journal of Preventive Medicine. He practices clinical preventive medicine in the SBU Hospital Employee Health and Wellness Service, co-directs the SBU Tele-Preventive Medicine Service, and serves as Head of the Generalist concentration in the SBU Master of Public Health. His long-term professional goal is to continue working in academic Preventive Medicine and advance population health through research, teaching, clinical practice and policymaking.

Dr. Maria Michas is a board certified preventive medicine specialist with over 25 years of clinical, administrative, teaching and research experience. She completed her medical degree at McGovern Medical School, Master of Public Health at University of Texas School of Public Health, Master of Business Administration with Washington State University, internship in Family Medicine with Memorial Family Medicine Residency Program in Houston, and residency in Occupational and Environmental Medicine at Southwest Center for Occupational and Environmental Health.

She is a certified Medical Review Officer, certified Federal Motor Carrier Safety Administration Medical Examiner and Fellow of American College of Occupational and Environmental Medicine. Licensed to practice medicine in six states, she has served as medical director for US HealthWorks, Memorial Hermann Healthcare System, Group Health, SeaBright Insurance Company, Molina Healthcare and University of Massachusetts Memorial Health Care. She has also served as Associate Professor in Department of Family Medicine and Community Health and Preventive Medicine Residency at University of Massachusetts Medical School and as Clinical Professor at Memorial Family Medicine Residency Program, and Group Health Family Medicine Residency.

Currently, Dr. Michas works for QuadMed as Vice President/Medical Director of Occupational Health Services and is helping develop employer onsite occupational health and wellness clinics.

Ryan D. Lang, MD, MPH (they/them) currently serves as a Pharmacovigilance Physician with Advanced Clinical and Otsuka Pharmaceuticals in the ACPM-Otsuka Pharmacovigilance Physician Program. They previously served on faculty in the Department of Health Policy and Management as Chief Resident and later Assistant Program Director of the General Preventive Medicine Residency Program at the Johns Hopkins Bloomberg School of Public Health in Baltimore. Dr. Lang received their MD from Vanderbilt University School of Medicine in Nashville, MPH from Johns Hopkins, and B.S. from Oakwood University in Huntsville, Alabama. Dr. Lang completed residency in internal medicine (urban health track) at the Johns Hopkins Hospital followed by a second residency in general preventive medicine at Johns Hopkins. They are dually board-certified in internal medicine and general preventive medicine/public health. Dr. Lang has broad experience in clinical medicine, research, community nutrition education, and postgraduate medical education. Their previous work has been published in peer-reviewed journals such as MedEdPORTAL and the Global Journal of Health Science

Sritha Rajupet, MD, MPH, FACPM, is a triple board-certified physician in family medicine, general preventive medicine and public health, and clinical informatics She brings expertise to the field of medicine at a time when direct patient care alone is not enough to deliver high-quality care, but rather requires the intersection of data, technology and population-level analysis to drive positive patient outcomes through the creation and oversight of programs, policies and services that promote family and child health.

She is currently the Director of Population-Based Health Initiatives, the Director of Primary Care for the Post COVID Clinic, the Deputy Division Head of Graduate Medical Education, and an Assistant Clinical Professor in the Departments of Biomedical Informatics and Family, Population, and Preventive Medicine at Stony Brook Medicine in Stony Brook, New York. Dr. Rajupet combines her passion for patient care and teaching with strategic planning for population health-based interventions using robust data sets, research and quality improvement initiatives. She is actively involved in the development of integrative care delivery and payment models as well as the execution of population-based projects focused on improving value-based care to vulnerable and underserved communities.

Warren Silverman, MD, FACOEM, FACPM received his medical degree from Albany Medical College in 1978. Following residency and board certification in Internal Medicine at Duke Medical Center, he started his career in the USPHS on the island of Ocracoke, caring for all residents, permanent and transient — a job that included caring for children and pets, running a pharmacy and delivering babies. He achieved the rank of Lieutenant Commander and later joined the faculty in Internal Medicine at Albany Medical College.

Dr. Silverman was trained in preventive medicine at the University of California, San Francisco and is board certified by the ABPM in Occupational Medicine. He has 34 years of experience managing a free-standing Occupational Medicine practice; working as a Senior Aviation Medical examiner, Police Surgeon, Fire Surgeon and Special Government Employee with OSHA; and serving as the medical director for numerous domestic and international employers. He is also board certified in Forensic Medicine.

Additional professional highlights include providing medico legal consulting and expert witness testimony; teaching in Thailand at the medical college; working with the Government of Vietnam for Occupational Health and Safety; starting a safety consulting business in Cambodia. He serves on the Board of Directors at ACOEM as the Section Head of the Environmental Health Section and is completing a second term as president of the New York Occupational and Environmental Medical Association. He serves as a delegate to the AMA House of Delegates for the Physician Assistant section and currently works with residents and new physicians to make Environmental Medicine a career path with expertise and revenue stream.

Darrell Singer, MD, MPH, proudly and happily teaches medical and graduate students at the Uniformed Services University of the Health Sciences as an associate professor and Director, Master of Public Health Degree Program.

Dr. Singer was educated and trained at the University of Georgia (BS, 1989-91), Uniformed Services University (MD, 1991-95), Tripler Army Medical Center (Transitional Internship 1995-96), Johns Hopkins School of Public Health (MPH, 2000-01) and Walter Reed Army Institute of Research (General Preventive Medicine Residency 2001-02).

He retired from uniformed service in 2020 after 34 years of active service, a career spanning his enlistment in the U.S. Army (1985) as a combat medic, commissioning as an Army officer (1991) and interservice transfer to the U.S. Public Health Service (2006). His assignments included the 82nd Airborne Division, 3rd Special Forces Group (Airborne), 101st Airborne Division, Walter Reed Army Institute of Research, National Institute of Allergy and Infectious Diseases and the U.S. Embassy in Abuja, Nigeria.

Dr. Singer is board certified in general preventive medicine and has authored or co-authored 21 manuscripts and three book chapters. His awards include the Defense Superior Service Medal, Distinguished Service Medal, Meritorious Service Medal (1OLC), Air Medal, Order of Military Medical Merit and the PEPFAR 2011 Joe Haydon Award.

Christa-Marie Singleton, MD, MPH, FACPM, is the Chief Medical Officer in the Centers for Disease Control and Prevention’s (CDC) Office of the Associate Director for Policy and Strategy (OADPS) where she serves as the senior medical advisor regarding clinical to community population health interventions that improve health and control costs.

She represents CDC on the National Alliance of Healthcare Purchaser Coalitions’ Board of Governors, the Atlanta Regional Commission for Health Improvement Steering Committee and served the CDC COVID-19 Response as a subject matter spokesperson and as the Associate Director for Science/Science Lead for the Chief Health Equity Office Unit.

Prior to OADPS, Dr. Singleton was the senior medical advisor in CDC’s Division of State and Local Readiness where she was the lead architect of the inaugural edition of CDC's Public Health Preparedness Capabilities: National Standards for State and Local Planning.

Dr. Singleton has served as the chief medical director for the Baltimore City Health Department’s Office of Public Health Preparedness and Response, the director of the Bureau of Disease Control at the Baltimore County Department of Health, and the senior analyst for maternal and child health at the Association of State and Territorial Health Officials. She has worked nights and weekends as a pediatric physician and is a volunteer physician with the Dekalb County, GA Board of Health.

Dr. Singleton has been recognized by the White House Fellowship Program as a 1997 national finalist, received the 2011 “Outstanding Scientific Award” Employee of the Year Award by the Atlanta Federal Executive Board, and was selected to be a member of the 2020 class of the Nashville Health Care Council Fellows.

Eric B. Smith, DO, MPH, CTWH, FACPM, is residency-trained and board-certified in both general preventive medicine and public health and occupational medicine. He works full-time as an occupational medicine specialist as an associate physician with Kaiser Permanente Washington.

He completed residency training in occupational and environmental medicine, as well as a certificate program in Total Worker Health® at the University of Colorado Denver in 2019. He earned his Masters in Public Health at the University of Washington in 2011 and completed his preventive medicine residency in 2010 at Madigan Army Medical Center in Tacoma, Wash. Earlier in his career he completed an internship in combined internal medicine/psychiatry at Tripler Army Medical Center. He graduated from the Philadelphia College of Osteopathic Medicine in 1998.

Dr. Smith retired from the U.S. Army after 24 years of service. He began his military career as Russian linguist and intelligence specialist in the enlisted ranks, and then pursued medical training and ultimately served as a general medical officer, flight surgeon and preventive medicine physician. He has several overseas deployments and has served with distinguished units, such as the 5th Special Forces Group (Airborne), 101st Airborne Division (Air Assault) and the Multinational Force and Observers in Sinai, Egypt.

Leith States, MD, MPH, MBA, FACPM, currently serves as the Chief Medical Officer to the Assistant Secretary for Health (ASH) in the Office of the Assistant Secretary for Health (OASH) at the U.S. Department of Health and Human Services. In that role he leads the Office of the CMO, advises and supports Admiral Rachel Levine, the ASH and other senior OASH leadership regarding issues of national public health importance through collaboration with OASH program offices, HHS enterprise, interagency and external stakeholders. Before HHS, he spent nine years on active duty as a Navy Medical Corps Officer serving in multiple roles including Battalion Surgeon of the 1st Battalion 1st Marines, Public Health Emergency Officer for Navy Medicine West and Officer in Charge of a Forward Deployable Preventive Medicine Unit.

A native of North Long Beach, California, States received his Doctor of Medicine from the University of California at San Diego School of Medicine, completed his preventive medicine residency training and Master of Public Health at Loma Linda University and earned a Masters of Business Administration from the George Washington University. His personal awards include the Meritorious Service Medal, Navy and Marine Corps Commendation Medal, Navy and Marine Corps Achievement Medal and multiple unit and campaign awards.

Aristotle Sun, MD, MPH, FACPM, currently serves as the medical director for an employer-sponsored primary care clinic at University of Washington Medicine Valley Medical Center. Prior to this position, he was a primary care physician at senior care-internal medicine clinic at the same institution and a medical director of primary care and population health at an integrated behavior health clinic network in Arizona.

He completed his bachelor’s degrees at University of California Berkeley in Neurobiology, Public Health, and Business Administration, and his MD and MPH in Health Management and Policy at University of Michigan. After an internship in healthcare management consulting at Deloitte and internal medicine internship in NYC, he returned to University of Michigan for preventive medicine residency training. Over the past two years, he had been involved in his health system’s COVID response from PPE training and management to standing up COVID testing sites and other ongoing support efforts while setting up a new clinic for health system employees and their dependents. He is leveraging his training and experience to support system- and clinic-level activities in implementation of clinical practice guidelines, lifestyle medicine and technology integration in primary care, population health management, and physician- and employee-wellness efforts.