1185 Corporate Center Dr #300
Oconomowoc, WI 53066


Our Physicians

Ethan Handler, MD

Board-Certified Otolaryngologist | Sinus and Sleep Surgeon | Cosmetic Surgeon
Dual board-certified in otolaryngology and cosmetic surgery, Ethan Handler, MD, received his MD from the Medical College of Wisconsin before returning to his native state of California, to complete his residency in Head and Neck Surgery with Kaiser Permanente in Oakland, California. During his residency, Dr. Handler embarked on numerous surgical medical missions operating in a variety of third world countries, providing care for those in desperate need. Dr. Handler is passionate about ADVENT’s mission to provide unparalleled care and believes open and natural physician-patient communication is the cornerstone to your treatment success.

R. Nikolaus Schmidt, MD

Board-Certified Otolaryngologist | Sinus and Sleep Surgeon
With more than thirty years of experience, R. Nikolaus Schmidt, MD, brings an extensive level of expertise to ADVENT. Dr. Schmidt shares ADVENT’s vision of simple in-office solutions to address sinus and sleep concerns and is passionate about helping you live better. A native of Michigan, Dr. Schmidt completed his undergraduate work at the University of Michigan and went on to receive his MD from University of Michigan Medical School. He completed an internship in general surgery at Wayne State University and continued at Wayne State University for his residency in otolaryngology. Board-certified in his field, Dr. Schmidt incorporates advanced technology and minimally-invasive techniques to provide the best possible care available today.

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Nearby Businesses: ProHealth Medical Group Clinic & Urgent Care Oconomowoc, Waukesha State Bank and
Silver Lake Outpatient Center