Our Faculty


Gina Gill Glass, MD, FAAFP, Program Director

Clinical Associate Professor, Sidney Kimmel Medical College at Thomas Jefferson University
Clinical Associate Professor, Rowan University School of Osteopathic Medicine
Dr. Glass joined our Residency Program Faculty in 2005.  She earned her undergraduate degree from The Johns Hopkins University and her medical degree from Tulane University Medical School, where she was elected to the Alpha Omega Alpha Honor Medical Society.  Dr. Glass completed residency at the University of South Alabama, serving as Chief Resident and earning the AAFP Award for Excellence in Graduate Medical Education. While repaying her National Health Service Corps scholarship, Dr. Glass was awarded the AAFP Teacher Development Award for her teaching at the Southwest GA Family Medicine Residency.  Prior to returning to her roots in South Jersey, Dr. Glass spent time in private practice, and then served as Associate Director at the VCU-Riverside Family Medicine Residency in VA.  In addition to her Program Director role at Inspira, Dr. Glass is the Local Editor for our program’s peer reviewed publications through the Family Physicians Inquiries Network (FPIN) and also serves on FPIN’s Board of Directors.  She currently lives in Cherry Hill with her husband and two children.  Outside interests include music, cooking, camping, and various social justice ministries.


William R. Barker, MD, Associate Director        

Clinical Assistant Professor, Rowan University School of Osteopathic Medicine
Dr. Barker first joined us as a part time Faculty member after graduating from our Family Medicine Residency in 2014.  He holds a master’s degree in biological science from the Medical College of Pennsylvania-Hahnemann and earned his medical degree from Temple University School of Medicine. Concurrent with his medical training, Dr. Barker served four years with the U.S. Army. Upon completing medical school, he served three more years as a Brigade Surgeon and was deployed to Afghanistan. Dr. Barker received multiple decorations for his service in the Army, including the Global War on Terrorism medal and a Bronze Star medal. Following his service, Dr. Barker spent one year as a surgical resident at Monmouth Medical Center and then completed his Family Medicine residency at Inspira, where he served as Chief Resident. Prior to re-joining us as the full-time Associate Program Director and Medical Director, Dr. Barker was in private practice at the Inspira Family Medicine Center in Woolwich, NJ, and also provided care at Inspira Urgent and Wound Care Centers. He lives with his wife and four children in Moorestown, NJ.


S. Sutton Hamilton, MD, Assistant Director

Clinical Assistant Professor, Sidney Kimmel Medical College at Thomas Jefferson University
Clinical Assistant Professor, Rowan University School of Osteopathic Medicine
Dr. Hamilton joined our Residency Program Faculty in 2005.  He previously served as Associate Director at VCU - Blackstone Family Practice Residency in rural southern Virginia.  Dr. Hamilton graduated from the University of Pittsburgh School of Medicine, and the Franklin Square Family Medicine Residency Program in Baltimore, MD, where he served as Chief Resident.  He completed his undergraduate studies at Duke University in Durham, NC, and a Faculty Development fellowship at the University of Cincinnati.  Dr. Hamilton .has a special interest in developmental and behavioral pediatrics, authoring many peer reviewed publications in these areas and instituting an educational assessment clinic for at risk children in our Family Medicine Center.  Dr. Hamilton lives with his wife, Jessica, and three children in Haddonfield N.J.  Outside interests include home brewing, soccer, guitar and ACC basketball.


Suzanne W. VanDerwerken, MD, FAAFP, Assistant Director

Clinical Assistant Professor, Rowan University School of Osteopathic Medicine
Dr. VanDerwerken joined our Residency Program Faculty in 1994. In addition to her current Assistant Director position at our program, Dr. VanDerwerken served as Chairman of the Department of Family Medicine at Underwood-Memorial Hospital in 2008-2009, as Interim Director of the Student Health Center at Rowan University in 2010-2011, and as Program Director of our Residency program in 2013-2015. Dr. VanDerwerken is board-certified in both Family Medicine and Adolescent Medicine.  A graduate of the Inspira Woodbury (formerly Underwood) Family Medicine Residency Program, she received her medical degree from Jefferson Medical College and her undergraduate degree in microbiology from Brigham Young University.  Dr. VanDerwerken has special interests in evidence-based medicine, population health and the patient-centered medical home, the primary prevention and management of chronic illness, and the role of arts and literature in medical education. Dr. VanDerwerken and her husband Joseph have three daughters.


Aarti Aggarwal, MD,  Assistant Director

Clinical Assistant Professor, Sidney Kimmel Medical College at Thomas Jefferson University
Clinical Assistant Professor, Rowan University School of Osteopathic Medicine
Dr. Aggarwal joined our Residency Program Faculty in 2015. She completed her Family Medicine Residency at Carilion Clinic–Virginia Tech School of Medicine in June 2015. She was an Academic Chief Resident during her residency where she organized and prepared didactic lectures, and assisted with board review preparation and program evaluation meetings. Dr. Aggarwal earned the STFM-Resident Teacher Award in recognition of her demonstrated interest, ability, and commitment to Family Medicine education. Dr. Aggarwal graduated from the Medical University of Silesia in 2011. She earned her undergraduate degree in biology from Queens College in NY.  She has special interests in evidence based medicine, hospital medicine, and women’s health. Her hobbies include bowling, cooking, Zumba, music, and spending time with friends and family. 


Marjorie Affel, MD, MPH, Assistant Director

Clinical Assistant Professor, Rowan University School of Osteopathic Medicine
Dr. Affel joined the Residency Program Faculty in 2017. She graduated in 2009 from the MD/MPH program at Drexel University College of Medicine in Philadelphia, and completed residency in 2012 at the Lawrence Family Medicine Residency based at the Greater Lawrence Family Health Center in Lawrence, Massachusetts. Upon graduation, she joined the Lynn Community Health Center, a Federally Qualified Health Center north of Boston, where she worked until 2017. During her time there, she practiced full spectrum family medicine, including Labor & Delivery at North Shore Medical center from 2013 to 2015.  Previously, Dr. Affel graduated from Tufts University in 2003 with a Bachelor’s of Science in Biology and a minor in Women’s Studies. She studied abroad at Facultad Latinoamericana de Ciencias Sociales in Buenos Aires, Argentina. 
Her clinical interests include Women’s Health, Maternal-Child Care, Integrative Medicine, Substance Abuse care, group medical visits and care for underserved populations. She speaks fluent Spanish. She will be caring for patients at the Prenatal Care Program as well as at our Family Medical Center in Woodbury.


Susan McGroarty, Ph.D. ABPP, Behavioral Science Faculty

Adjunct Associate Professor, Department of Psychiatry, Rowan University of Osteopathic Medicine
Dr. Susan McGroarty is a Clinical Psychologist specializing in Integrated Healthcare with special expertise in Complex Trauma and Human Diversity.  She currently serves as the Behavioral Scientist to the Family Medicine Residency Program at Inspira Woodbury.  Prior to joining the residency, she was a tenured-Associate Professor in the Psy.D. Program in Clinical Psychology at Chestnut Hill College (Philadelphia).  As a member of the doctoral clinical psychology faculty, Dr. McGroarty taught courses, chaired dissertation research and mentored students in psychotherapy, treatment of trauma, and diversity/human rights education and action. She has written articles and given numerous presentations on topics related to trauma and diversity and has served as co-chair, chair, and invited member for regional and national psychological organizations. An ardent advocate of human rights, Dr. McGroarty mentored the development of a Human Rights Forum in the doctoral program which was recognized at the APA Convention in 2014.  When not working, look for her to be paddle boarding on the bays and inlets around the shore.


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