Northwest Indiana
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Indiana Surgical Associates

Providing World Class Surgical Care

Serving the needs of our community with world class surgical care, minimally invasive procedures, and improved quality of life.

In The Hands of Qualified Experts

Founded in 1995, ISA is made up of 17 board certified surgeons. Our team is highly qualified in all aspects of general surgery and specialized fields including:

Advanced Laparoscopic
Robotic
Bariatric
Trauma
Surgical Oncology

Areas of Expertise

Our 17 board certified surgeons have over 125 years combined experience and can cover a wide range of surgical procedures. If you're interested in learning more about the procedures our faculty covers please contact our offices today.

Bariatric Surgery

Bariatric surgery involves making changes to your digestive system to help you lose weight, such as gastric bypass and other weight-loss surgeries.

Breast Surgery

Breast surgery is a procedure that modifies a woman or man's breasts. Such surgeries are done for a variety of reasons, either cosmetic or health related.

Colorectal Surgery

Colorectal surgery deals with repairing damage caused by colorectal diseases, and a variety of health problems along the gastrointestinal tract, in your rectum, anus or colon.

Endocrine

Endocrine surgery focuses on the endocrine glands, such as thyroid, parathyroid, adrenal glands, glands of the endocrine pancreas, and some neuroendocrine glands.

Heartburn (GERD) Surgery

Heartburn surgery is a treatment for acid reflux, also known as GERD (gastroesophageal reflux disease). This condition allows stomach acid to come back up into the esophagus.

Hepatobiliary

Hepatobiliary surgery treats disorders of the biliary system, which includes the liver, pancreas, gallbladder and bile duct. The biliary system helps the body digest foods.

Hernias

Hernia repair refers to a surgical operation for the correction of a hernia- the bulging of internal organs or tissues through the wall that contains it.

Port a Cath Surgery

This surgery places a port under the skin to give treatments, including intravenous fluids, blood transfusions, or chemotherapy and antibiotics.

Da Vinci Surgical System

The Da Vinci Surgical System is a robotic surgical system that uses a minimally invasive surgical approach for prostatectomies, cardiac valve repair, and other surgical procedures.

Laparoscopic Surgery

Laparoscopic surgery is a minimally invasive surgical technique used in the abdominal and pelvic areas. This technique is associated with faster recovery and better patient outcomes.

Excellent Surgical Services & Compassionate Care

We provide improved quality of life for our patients by delivering excellent surgical services and compassionate care. Our dedicated staff strives to be the surgical group of choice for patients and referring physicians in Northwest Indiana.

17

Certified Doctors

6

Bruce J. Stoehr Jr.

MD, FACS

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Sandra M. Wischmeyer

DO

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Eric Woo

DO, FACS

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Pre-Op Instructions

What to expect before your surgery?

ISA- Indiana Surgical Assoiciates

Important Things To Know

Our surgery scheduler will contact you regarding the date and time of your surgery.
All insurance pre-certification will be handled by our insurance personnel.
The hospital's pre-admission unit will call to schedule any pre-operative testing that has been ordered by your physician or the anesthesiologist.
Please be sure to bring a list of your current medications with you on the day of surgery.
Our experienced staff is here to answer any additional questions you may have. Please feel free to reach out during regular business hours.

Indiana Surgical Associates

Providing World Class Surgical Care

In The Hands of Qualified Experts

Areas of Expertise

Excellent Surgical Services & Compassionate Care

17

6

Meet Our Specialists

Cosmina Cristea

DO

Brendan P. Frawley Jr.

MD, FACS

Tom N. Galouzis

MD, FACS

Sha-Ron Jackson-Johnson

MD

Jocelyn M. Logan

MD, FACS

Peter Mavrelis

MD

John Mirro

MD

Mark A. Mueller

MD, FACS

Christopher R. Mussman

DO, MS

Jonathan Patterson

DO

Aaron J. Schneider

MD

Thomas W. Shin

MD, FACS

James Siatras

DO, FACS

Dana-Rachael Smith

MD

Bruce J. Stoehr Jr.

MD, FACS

Sandra M. Wischmeyer

DO

Eric Woo

DO, FACS

Pre-Op Instructions

What to expect before your surgery?

ISA- Indiana Surgical Assoiciates

Important Things To Know

Need to speak with us?

Give us a call today.