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.

Ronen Elefant

MD

Ronen Elefant, MD, specializes in trauma surgery and is board-certified in surgery and surgical critical care by the American Board of Surgery. He is affiliated with UPMC Williamsport, UPMC Muncy and UPMC Cole. Dr. Elefant completed his fellowship at University of Maryland Medical Center, residency at Temple University Hospital, and medical education at Albert Einstein College of Medicine.
• Surgical Critical Care Fellowship, R. Adams Cowley Shock Trauma Center, University of Maryland
• General Surgery Residency, Temple University Hospital
• MD, Albert Einstein College of Medicine, Yeshiva University
• MS, Columbia University School of Engineering and Applied Science
• BA, Yeshiva University, Yeshiva College
Dr. Elefant’s academic interests include surgical simulation, surgical anatomy and embryology, emergency general surgery, and healthcare economics.

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.

Dan McMahon

MD, MBA, FACS

Dr. McMahon, a native of Fairhope, Alabama, is a general surgeon with over 20 years of experience in academic and military medical settings. He completed his undergraduate education at the University of Alabama followed by medical school at the University of Alabama School of Medicine. His surgical internship and residency were completed at Naval Medical Center Portsmouth, Virginia. He served 12 years on active duty in the U.S. Navy with multiple overseas deployments. During his active-duty service, he gained leadership and operational experience in various areas including aerospace medicine as a Navy flight surgeon, surface and subsurface naval operations, and special operations support. In his active clinical practice, he performs a variety of open, laparoscopic, robotic, and endoscopic procedures. Dr. McMahon completed an Executive MBA program at Emory University’s Goizueta Business School with a concentration in strategy and finance and he is President and Founder of Delta Medical Consulting, LLC.

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.

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.

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.