East Lansing – October 29, 2026 -- The Inner Circle has named David R. Neff, DO, a Pinnacle Lifetime Member for contributions in medicine, education and research, citing a career of more than 45 years that spans clinical practice, pharmaceutical leadership and academia.
Neff spent 15 years in pharmaceutical leadership after 20 years in clinical practice
Neff worked in direct clinical practice for about 20 years before moving into the pharmaceutical industry. There he held leadership roles for 15 years, including Medical Science Liaison at Merck and Senior Chief Medical Director for Medicaid Medical Affairs.
When the COVID-19 pandemic emerged, he returned to patient care in urgent care and family medicine settings.
Neff's research appeared in the New England Journal of Medicine
His published work, covering genomics and advanced diagnostic methodologies, appeared in the New England Journal of Medicine. He has co-authored multiple publications with members of the American College of Cardiology. He has also spoken regionally and nationally on pain management and pharmaceutical drug discovery.
Neff leads a practice covering infectious disease, cancer and diabetes
Neff is Principal and CEO of David Neff DO PLLC. The practice treats infectious diseases, cancer, diabetes, cardiometabolic disorders, pain management, hospice and palliative care, and family medicine. His consulting work covers cardiometabolic, renal and hepatic syndromes, muscular dystrophy and long-acting injectable antipsychotic therapies.
He earned his Doctor of Osteopathic Medicine degree from Michigan State University College of Osteopathic Medicine in 1980. He completed a family medicine residency at Lansing General Hospital and is board certified in family medicine.
Neff teaches as a clinical professor and sits on the Care Free Clinic board
Neff is a Clinical Professor at Michigan State University College of Osteopathic Medicine. He is active in organizations including the American Osteopathic Association, the Michigan Health and Hospital Association, the National Lipid Association and the American Heart Association.
He volunteers with the U.S. Pain Foundation and serves on the board of the Care Free Clinic in Lansing, Michigan, which expands healthcare access for underserved populations. He plans to devote more time to teaching medical students, residents and fellows.