Dr. David OyerMD
Internal Medicine
at David S. Oyer, MD, SC — Chicago, IL
About
David S. Oyer, MD earned his undergraduate degree in Chemistry from the University of Rochester in 1964 and his medical degree from Harvard Medical School in 1969. He completed both his internship and residency in Internal Medicine at Harvard Boston City Hospital, training in the Peabody Building of the Harvard Medical Service. "
After residency, Dr. Oyer completed a Fellowship at the National Institute of Health Research and then a Fellowship in Endocrinology, Diabetes and Metabolism at Massachusetts General Hospital in 1975. His clinical interests span internal medicine, preventive care, endocrinology, diabetes management, and healthy aging. He has published research on the Clanging Tuning Fork Test, a specialized diagnostic tool for quantitative assessment of diabetic peripheral neuropathy. Dr. Oyer is passionate about fitness, nutrition, and emotional well-being as core components of health. He takes full responsibility for each patient's care, a practice he describes as deeply rewarding and essential to less fragmented, more targeted medicine.
Education & Training
Undergraduate
BS, Chemistry, University of Rochester, NY, 1964
Medical School
MD, Harvard Medical School, MA, 1969
Residency
Residency, Internal Medicine, Harvard Boston City Hospital, MA, 1972; Internship, Internal Medicine, Harvard Boston City Hospital, MA, 1970
Fellowship
Fellowship, Endocrinology, Diabetes and Metabolism, Massachusetts General Hospital, 1975; Fellowship, National Institute of Health Research, 1973
Conditions Treated
Who is Dr. Oyer right for?
Dr. Oyer is a strong fit for adults who want a single physician overseeing all aspects of their health. Patients managing diabetes, metabolic conditions, or endocrine disorders benefit from his subspecialty depth. He also works well with patients focused on prevention, healthy aging, and lifestyle optimization. Those who value direct physician access and thorough annual evaluations will find his model particularly well-suited to their needs.
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Frequently Asked Questions
Dr. Oyer treats a wide range of conditions across internal medicine, endocrinology, and preventive care. His clinical focus includes diabetes, metabolic disorders, and diabetic peripheral neuropathy. He also manages chronic disease, acute illness, and age-related health concerns. Preventive screenings and lifestyle-based health optimization are central to his practice.
Dr. Oyer completed his Fellowship in Endocrinology, Diabetes and Metabolism at Massachusetts General Hospital in 1975. He has practiced in endocrinology and internal medicine for over five decades. His clinical expertise in diabetes management and metabolic health reflects that deep subspecialty training.
Dr. Oyer earned his MD from Harvard Medical School in 1969. He completed his internship and residency in Internal Medicine at Harvard Boston City Hospital. He then trained at the National Institutes of Health before completing his endocrinology fellowship at Massachusetts General Hospital in 1975.
Dr. Oyer takes full personal responsibility for each patient's care. He views this as essential to producing cohesive, targeted health outcomes. His approach integrates internal medicine, endocrinology, and preventive care into a unified patient relationship. He also incorporates fitness, nutrition, and emotional well-being into his clinical assessments.
Dr. Oyer has published research on the Clanging Tuning Fork Test, a diagnostic tool for quantitatively assessing diabetic peripheral neuropathy. This work reflects his longstanding clinical focus on diabetes and its complications. His research background informs his evidence-based approach to patient care.
Dr. Oyer sees adult patients across a broad range of health concerns. He works closely with patients managing diabetes, endocrine disorders, and chronic conditions. He also partners with patients focused on prevention, healthy aging, and optimizing long-term wellness.
Dr. Oyer offers a 90-minute Annual Comprehensive Wellness Evaluation for each member. All other appointments run 30 minutes. This structure gives patients meaningful time to discuss their health in depth at every visit.
Doctor profile last updated March 21, 2026