Dr. Lemonnier earned her undergraduate degree from Boston University. She went on to attend Wayne State University School of Medicine, receiving her Doctorate of Medicine with Distinction in 2005, and continued her residency in Otolaryngology there. She then completed a fellowship in Rhinology and Endoscopic Skull Base Surgery at the University of Miami. Dr. Lemonnier is certified with the American Board of Otolaryngology. She provides general E.N.T. services as well as specialized care for a wide variety of sinonasal disorders including chronic sinusitis, nasal polyps, and tumors of the nasal cavity, sinuses and skull base. Dr. Lemonnier spent the first part of her career in academic medicine, providing patient care as well as teaching resident physicians. Having grown up in Holland, she returned to Michigan in 2018 with her husband, Jay, and two daughters to join Cass Street Ear, Nose & Throat.