Richard M Rotnicki, DO FACG

After graduating Magna Cum Laude from Loyola University, Dr. Rotnicki went on to earn his medical degree from Midwestern University, where he also completed his gastroenterology fellowship. Dr. Rotnicki is board certified in gastroenterology; he is a fellow of the American College of Gastroenterology.  Dr. Rotnicki routinely attends Continuing Medical Education courses to stay up to date on medical advancements and treatments.

Dr. Rotnicki established his private practice in the Morris and Joliet areas in 1994 after practicing for 2 years with Dr. Bedford in Morris. Dr. Rotnicki is on staff at Morris Hospital. He performs out-patient endoscopies at Morris Hospital, Deerpath Ambulatory Surgery Center and Amsurg.

Dr. Rotnicki practices general gastroenterology with an emphasis on Inflammatory Bowel Disease, the treatment of Barrett's Esophagus, and colon cancer prevention. Dr. Rotnicki works in conjunction with his midlevel providers, which are an integral part of our practice to ensure patients are provided with the best possible care.

During his free time, Dr. Rotnicki enjoys fishing, golfing, skiing, and traveling with family and friends.

It is our goal and mission to provide the best, up to date, care in digestive diseases.

Lucinda DeWaele-Guzman, ANP, BC

Lucinda started her nursing career in 1979. After 25 years of working in Intensive Care Units, she completed the Masters of Science in Nursing program at the University of Saint Francis in Joliet, IL. She became a board certified Adult Nurse Practitioner in 2003.  After working in primary care for 3 years, she chose to specialize in gastroenterology. Lucinda has been practicing along side Dr. Rotnicki since 2006. Specialization allows her to provide focused care in the treatment and prevention of gastrointestinal illnesses. Her primary interests include: irritable bowel disease, inflammatory bowel disease, liver disease, and digestive problems. Prevention of colon cancer, support, and education of patients seeking care are priorities in our practice. Lucinda primarily sees patients in our Morris office.

Jeffrey Aguilar, PA-C

Jeff Aguilar is a nationally certified physician assistant focusing in gastroenterology care.  Jeff originally joined Dr. Rotnicki in November of 2008. His primary interests are GERD, functional bowel disorders, inflammatory bowel disease, gastrointestinal malignancy and liver disorders. Jeff primarily sees patients in our Morris office, however, offers a clinic once per week in Joliet.  He focuses on empowering patients through education and preventative care.  Jeff believes in fostering long-term relationships with patients and has a passion for working with diverse populations.

Jennifer Brumfield MSN APRN FNP-BC 

Jennifer is a Board Certified Family Nurse Practitioner who received her Bachelor of Science in Nursing (BSN) from Saint Xavier University in 2004 and a Master of Science in Nursing (MSN) from Chamberlain University in 2021. She has experience working with a range of acute and chronic diseases with a focus on Women's Health. Prior to to becoming a nurse practitioner, Jennifer worked 20 years in Labor and Delivery and has experience working in Oncology and Medical-Surgical units. Jennifer joined Dr. Rotnicki in January 2024. Jennifer goes above and beyond to make sure her patients are treated with compassion and understanding..