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About Us

Our Medical Providers


Dr. Vivian Onunkwo

Medical Director

Dr. Onunkwo received her medical degree at the College of Medicine, University of Nigeria. She completed her master’s degree in science and public health and her occupational medicine residency at Meharry Medical College in Nashville, Tennessee. Dr. Onunkwo is board-certified in Occupational Medicine and is a member of the American College of Occupational and Environmental Medicine, the American Association for Physician Leadership, Central States Occupational and Environmental Medicine and the American Medical Association. Vivian joined COM in 2017


Caroline McDonald, MSN, FNP-C

Nurse Practitioner

Studied nursing at Kalamazoo Valley in Michigan and received her Master of Science, Family Nurse Practitioner, at Goshen College in 2012. She worked as an orthopedic, neurologic and critical care nurse at Borgess and Bronson in Michigan for seven years before moving to Elkhart. At Elkhart General Hospital, she worked critical care step down for six years. Caroline joined COM in 2012.


Jennifer Graves, ANP - BC

Nurse Practitioner

Jennifer is ANCC Certified Adult Nurse Practitioner with expertise in Occupational; Orthopedic; and Rehab Medicine. She is a Graduate of Purdue University's FNP Program and a Sigma Theta Tau Honor Society Member. Jennifer honorably served in the U.S. Naval Reserves Nurse Corp as an NP and Naval Officer. Jennifer joined COM in 2015


Jenelle Stefanski, MS, FNP-BC

Nurse Practitioner

Jenelle Stefanski is a recent graduate of University of Michigan’s Family Nurse Practitioner program. Her interests include preventative, bariatric, and family medicine. Jenelle is certified by ANCC as a Nurse Practitioner and American Fitness Professionals and Associates for Weight Management Consultant. She enjoys staying active and mentoring in the Evans Scholars’ S2S program. Jenelle joined COM in 2015


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