Specialists
Meet the Team
Charles Cassidy
MD

Dr. Cassidy is a board-certified Family Practice physician fellowship trained in endoscopy and practicing in NE Wisconsin. He primarily provides endoscopy services at Renovo. Dr. Cassidy completed medical school at the University of California San Francisco. He completed a residency in family medicine with fellowship level training in Advanced Rural-Global Medicine and Surgery (ARMS) at John Peter Smith hospital in Fort Worth, TX, graduating in 2017. ARMS training included colonoscopy and esophagogastroduodenoscopy (EGD), as well as a broad range of surgical procedures, such as appendectomy, cholecystectomy, herniorrhaphy, and hemorrhoidectomy.
Herbert Coussons
MD

Dr. Coussons has been practicing obstetrics and gynecology in northeast WI for over 20 years. He completed his residency at Louisiana State University and practiced in eastern Washington and Idaho prior to coming to NE WI. Fertility medicine and complex gynecologic surgery are particular areas of expertise, but he provides the full spectrum of gynecologic care including annual exams and menopause care. His clinic, Dr. Coussons Advanced Care for Women, is located in Green Bay on Holmgren Way.
Susan Lepinski
MD

Dr. Lepinski is a board certified gastroenterologist who was born and raised in Wisconsin and has practiced mostly in the Madison and North Central WI areas of the state. She completed medical school, medicine residency, and fellowship at the University of Wisconsin. She considers it a privilege to provide patient care to the residents of WI.
Mitchell Manthey
MD

Dr. Manthey is a board certified gastroenterologist with more than 30 years of experience. He has performed over 60,000 procedures in Northeast Wisconsin. He completed medical school in Madison, his medicine residency at the University of Minnesota, and his fellowship at the Medical College of Wisconsin. “My primary goal for our procedures is a safe, thorough and comfortable examination for every patient,” he says. “I want all our patients to feel that we carefully listen to their concerns, answer their questions and provide high-quality care for them.”
Sean McAdams
MD

Dr. Sean McAdams is a board-certified urologist providing comprehensive care for patients in Northeast Wisconsin. He specializes in robotic and laparoscopic urologic surgery, urinary incontinence, sexual dysfunction, and the treatment of kidney stones, BPH, and urologic cancers. Dr. McAdams completed his medical training and residency at the University of Minnesota Medical School and a fellowship in endourology at Mayo Clinic Arizona. He is a member of the AUA, Endourological Society, and Alpha Omega Alpha Honor Medical Society.
Hamayun Mian
MD

Dr. Hamayun Mian is a board-certified urologist with expertise in adult and pediatric urology, robotic and laparoscopic surgery, and complex urologic disorders including pelvic prolapse and urinary incontinence. He received his medical degree from Hahnemann University and completed training at Geisinger Health System. Dr. Mian is a diplomate of the American Board of Urology and a fellow of the American College of Surgery. He is actively involved in multiple medical societies, including the AUA and Endourological Society.
John Newman
MD

Dr. Newman is a board certified general surgeon with decades of experience providing the full spectrum of general surgery care. He received his medical degree at the Uniformed Services University of Health Sciences and completed his surgery residency in the US Navy.
Clint Rau
DDS

Dr. Rau is a board certified pediatric dentist well known to the Manitowoc community for his Young Smiles practice on Reed Ave. He conducts complex dental restorations for children requiring general anesthesia for the optimization of their dental care. He completed dental school at Marquette University in Milwaukee and his pediatric residency at Baylor College of Dentistry in Texas.
Mark Romzek
MD

Dr. Romzek is a board-certified Orthopedic Surgeon. He provides a wide range of orthopedic procedures at Renovo. He completed his training in Orthopedic Surgery at Pontiac Osteopathic Hospital, Pontiac Michigan and completed a Fellowship in Sports Orthopedic Surgery at Michigan Knee and Shoulder Institute, Auburn Hills Michigan
Dr Romzek is licensed in multiple Midwestern states and has practiced in Wisconsin for more than 15 years.
Dr Romzek is licensed in multiple Midwestern states and has practiced in Wisconsin for more than 15 years.
Herbert Wiser
MD

Dr. Herbert Wiser is a board-certified urologist offering advanced surgical and medical care for a wide range of urologic conditions. His specialties include minimally invasive and robotic surgery, prostate and bladder disorders, and kidney stone treatment. He earned his medical degree from the University of Illinois at Chicago and completed training at Southern Illinois University. Dr. Wiser is a member of the American Urological Association, Alpha Omega Alpha Medical Society, and a diplomate of the American Board of Urology.
Amy Yeatman
DO

Dr. Yeatman is a board-certified pain physician and anesthesiologist who has practiced in northeast Wisconsin for most of her career, providing interventional pain therapy to manage a variety of health conditions. She completed her residency at the Medical College of Virginia and her fellowship in Massachusetts at Baystate Medical Center. She also serves as an associate professor at U of WI School of Medicine, is a fellow of the World Institute of Pain, and the official Pain Physician for the Green Bay Packers.