Northwestern Surgical Associates will be closing its practice on July 31, 2023. Dr. Mark Toyama will be retiring from surgical practice. Dr. Jeffrey Fronza will be relocating his practice to Central DuPage Hospital starting October 1st 2023. Click here to learn more!

Northwestern Surgical Associates of Chicago | Minimally Invasive Surgery

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Northwestern Surgical Associates

Welcome to Northwestern Surgical Associates

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Northwestern Surgical Associates (NSA) is a multispecialty surgical practice affiliated with Northwestern Memorial Hospital and Northwestern University’s Feinberg School of Medicine. Our surgeons have been in practice at and have been on the teaching faculty of Northwestern Memorial Hospital for over 50 years. NSA surgeons have repeatedly been named “Top Doctors” by Castle-Connolly, Chicago Magazine, and other professional organizations. We are committed to continuing our tradition of exceptional care for the residents of Chicago, the outlying suburbs, and beyond.

Our small group model allows us to focus on the individual patient whose well- being guides all decisions. This results in an expedited work-up and treatment of your surgical condition. We believe that an educated and empowered patient is the best partner in this process. Patients are treated with the same respect and compassion as a member of our family. Our staff prides itself on providing professional, personalized, and prompt service. We are highly visible and intensely involved in our patient’s care from the preoperative consultation through postoperative visits.

Featured Services

herniasurg

Hernia Surgery

gallbladder

Gallbladder Surgery

bariatric

Bariatric Surgery

robotic

Robotic Surgery

reflux

Reflux Surgery

colorectal

Colorectal Surgery

What Our Patients Are Saying

Latest News & Updates

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The Joy of Giving – Guatemala 2020

This year Drs. Fronza, Toyama, and Hartz returned to Guatemala on our annual surgical mission trip. The team of 42 nurses, doctors, translators, physical therapist, and administrative staff performed ...
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Our Practice

NSA has clinical expertise in complex gastrointestinal disorders and cancer, breast cancer, abdominal wall hernias, bariatric surgery, colorectal surgery, robotic surgery, and surgical oncology. We utilize minimally-invasive and other advanced surgical approaches. This allows our patients to resume normal activity in the shortest time possible, while maintaining superior cosmetic, functional, and oncologic outcomes. See the services we offer.

NSA has earned and maintained a reputation in the Midwest for treating complex surgical diseases and welcomes patients seeking a thoughtful opinion. We work closely with your local physician to ensure seamless care across health systems and states.

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Northwestern Surgical Associates will be closing its practice on July 31, 2023. Dr. Mark Toyama will be retiring from surgical practice. Dr. Jeffrey Fronza will be relocating his practice to Central DuPage Hospital starting October 1st 2023.

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