Dr. Frederick Tiesenga

Founder & Chief Medical Officer, NEXI

Board-Certified General & Bariatric Surgeon

Professional Summary

Dr. Frederick Tiesenga is an award-winning board-certified bariatric surgeon who is passionate about helping individuals achieve healthier lifestyles. His success stems from the desire to innovate breakthrough procedures such as Single Incision Laparoscopic Surgery (SILS) and robotic surgery.

Dr. Tiesenga's continual innovation helps find better and more efficient practices to make it easier for patients. His bariatric specializations include the Lapband, Orbera gastric balloon, Gastric Sleeve, and SIPS bariatric procedure. With over 28 years of experience, he founded NEXI to extend his innovative approach to wellness through accessible telemedicine solutions.

Education & Training

Calvin College

B.S. Biology/Chemistry

Grand Rapids, MI

1983-1984

University of Illinois College of Medicine

Doctorate of Medicine (M.D.)

Chicago, IL

1987-1991

Illinois Masonic Medical Center

General Surgery Residency

Chicago, IL

1991-1996

Metropolitan Group Hospitals

Residency in General Surgery

Chicago, IL

1991-1996

Current Leadership Positions

President of Medical Staff

West Suburban Medical Center

2019 – Present

Clinical Associate Professor of Surgery

Avalon University School of Medicine

2019 – Present

Director of Surgical Services

Community First Medical Center

2014 – Present

Private Practice

Tiesenga Surgical Associates, S.C.

1996 – Present

President

District 5 Chicago Medical Society

2012 – Present

President

Illinois Reflux Society

2012 – Present

Key Career Positions

President

Illinois Association of Bariatric Surgeons

2018 – 2020

Chair of Peer Review

Westlake Hospital

2016 – 2019

Vice President Medical Staff

West Suburban Hospital

2017 – 2019

Chairman of Surgery, Director of Minimally Invasive and Robotic Surgery

West Suburban Hospital

2016

Director of Minimally Invasive and Bariatric Surgery

Westlake Hospital

2016 – 2019

President of Medical Staff

Westlake Hospital

2014 – 2016

Chairman, Department of Surgery

West Suburban Hospital

2014

Director of Minimally Invasive and Robotic Surgery

West Suburban Hospital

2012 – Present

Director of Bariatric Surgery

Presence Health System

2012

Vice President Medical Staff

Westlake Hospital

2012 – 2014

Affiliate Faculty, Department of Surgery

Loyola University

2011 – Present

Director of Minimally Invasive and Bariatric Surgery

Our Lady of the Resurrection Hospital

2010 – Present

Vice Chairman of Surgery

West Suburban Hospital

2010 – 2012

Chairman, Department of Surgery

Westlake Hospital

2010 – 2012

Director of Bariatric Surgery

West Suburban Hospital

2005 – 2012

Vice President

New Hope Surgical Weight Loss Center

2002 – Present

Vice Chairman, Dept. of Surgery

Westlake Hospital

2002 – 2004

Director of Surgery

Kindred Hospitals

1998 – 2007

Medical Specializations

Lapband Surgery

Orbera Gastric Balloon

Gastric Sleeve

SIPS Bariatric Procedure

Single Incision Laparoscopic Surgery (SILS)

Robotic Surgery

Minimally Invasive Surgery

Breast Surgery

Surgical Oncology

Bowel Surgery

Training & Proctorships

Covidien Midwest Trainer for SILS (2009 – Present)

Allergan Proctor for Lap-Band (2010 – Present)

US Surgical Proctor for Bariatric Surgery (2003 – Present)

Transoral Incisionless Fundoplication (TIF) Proctorship for Dr. Larry Gibson, Vista Medical Center (2011)

SILS Cholecystectomy Proctorship for Dr. Beene – Grand Rapids, MI (2010)

American College of Surgeons SILS Training Course - Faculty (2010)

SILS Mobile Tour Trainings - Tampa, FL, Memphis, TN, Raleigh-Durham, NC (2010)

Professional Memberships

American College of Surgeons - Fellow (1999 – Present)

Illinois Association of Bariatric Surgeons - Board Member (2010 – Present)

American Society of Bariatric Surgeons - Affiliate Surgeon (2003 – Present)

American Society of Breast Surgeons - Member (1999 – Present)

Illinois State Medical Society - Member (1999 – Present)

Chicago Medical Association - Member (1987 – Present)

Christian Medical and Dental Society - Member (1987 – Present)

American Medical Society - Member (1989 – 2009)

Hospital Affiliations

West Suburban Hospital - Oak Park, IL

Rush Oak Park Hospital - Oak Park, IL

Resurrection Medical Center - Chicago, IL

Community First Medical Center - Chicago, IL

Oak Park Wound Care - Oak Park, IL

Saint Joseph Hospital - Chicago, IL

Advocate Good Samaritan Hospital - Downers Grove, IL

Mercy Hospital and Medical Center - Chicago, IL

Advocate Illinois Masonic Medical Center - Chicago, IL

Continuing Education & Courses

Gore Advanced Bariatric Symposium

Chicago, IL

2018

OverStitch Advanced Suturing

Apollo Endosurgery – Austin, TX

2018

OverStitch Endoscopic Suturing System

Apollo Endosurgery – Austin, TX

2018

Advanced Bariatric Symposium

2017

Robotic Case Observations

2014

Robotic Lecture

Omaha, Nebraska

2014

Robotic Lecture at American College of Surgeons

Washington, D.C.

2013

Linx Reflux Management System Training

Chicago, IL

2013

Gore Component Separation Course

2012

Clinical Robotic Surgery Association 4th Worldwide Congress

Chicago, IL

2012

da Vinci Surgical System Off-Site Training for a Console Surgeon

Hartford Hospital Training Lab

2012

Covidien Single Incision Laparoscopic Surgery Course

Henderson, NV

2010

Gore Component Separation in General Surgery

Chicago, IL

2010

Endogastric Solutions training: EsophyX Device and TIF 2 Procedure

2009

ASMBS Advanced Laparoscopic Sleeve Gastrectomy

University of Chicago Medical Center

2009

Professional Presentations

Apollo Presentation - Lap-Band Adjustable Gastric Banding System Basic Workshop Faculty

Chicago, IL

2015

Intuitive Robotic Sales Presentation

Las Vegas, NV

2014

National Robotic Webinar - 'Robotic Surgery and Firefly'

December 2013

2013

Iowa Lecture on Robotic Surgery

Iowa

2013

National Robotic Webinar - 'Robotic Surgery and Firefly'

November 2013

2013

IABS Summit lecture - 'Hiatal Hernia Repair and Sleeve Gastrectomy'

IABS Summit

2013

Single Site Robotic Surgery Presentation

Downers Grove, IL

2012

SLIC conference abstract presentation - Single Site Surgery 'Scarless' Cholecystectomy and Appendectomy

SLIC Conference

2012

Speaker at Senator Kimberly Lightford's 'Man to Man' Event

Illinois

2011

American College of Surgeons presentation - 'Adjunctive Approach to Safety in SILS Cholecystectomy'

ACS Meeting

2010

Resurrection Medical Center Community Lecture - 'The Benefits of Weight Loss Surgery'

Chicago, IL

2010

Chicago Medical Society Lecture - 'Why Surgery is the Best Choice for Your Obese Patients'

Chicago, IL

2010

American College of Surgeons Presenter - SILS (Single Incision Laparoscopic Surgery)

ACS Meeting

2009

Chicago Medical Society Speaker - 'Single Incision Laparoscopic Surgery: a Surgical Revolution'

Chicago, IL

2009

Publications & Research

Morbid Obesity Treated With Laparoscopic Band Surgery Over a Sleeve Gastrectomy

2021

Priscilla Itua, MD, Supriya Kale, Daniya Sivakumar, Adejoke Johnson, MD, Frederick M. Tiesenga, MD

Consultant

doi:10.25270/con.2021.06.00011

Loop colostomy To Relieve Debilitating Chronic Constipation In Spina Bifida Patients: A Case Report

2021

Supriya V. Kale, BAa, Arooj F. Chaudhry, MHAb, Hersh Wazir, HSDc, Michael Yansen, BSa, Frederick Tiesenga, MD

Delayed Titanium Hypersensitivity and Retained Foreign Body Causing Late Abdominal Complications

2021

Molly S. Jain, Sivasthikka Lingarajah, Enkhmaa Luvsannyam, Manoj Reddy Somagutta, et al.

Case Reports in Surgery

doi: 10.1155/2021/5515401

Racial and Socioeconomic Disparities In Congenital Heart Surgery

2021

Crystal J. Richardson, Priscilla Itua, MD, Thuy Duong, HBSc, Jennaire Lewars, MD, Frederick Tiesenga, MD

Journal of Cardiac Surgery

Surgical Techniques, Complications, and Long-Term Health Effects of Cardiac Implantable Electronic Devices

2021

Crystal J. Richardson, John Prempeh, Kyle S. Gordon, Tracy-Ann Poyser, Frederick Tiesenga

Cureus 13(1): e13001

doi:10.7759/cureus.13001

Surgical Clips Metal Allergy Post Laparoscopic Cholecystectomy

2020

Rajiv N. Shah, MBA, Frederick Tiesenga, MD, Juaquito Jorge, MD, Arooj F. Chaudhry, MHA

International Journal of Surgery: Global Health

A Rare Case of Peritoneal Carcinomatosis Leading to Bowel Obstruction Due to Metastatic Lung Cancer

2020

Molly S. Jain, Enkhmaa Luvsannyam, Abubaker R. Kallan, et al., Frederick M. Tiesenga

Cardiac Sarcoidosis

2019

Sanni, R.R., Tiesenga, F.M., Schubert, C.B.

Consultant: Peer-Reviewed Consultations in Primary Care, Vol 59, No 6

Laparoscopic Adjustable Gastric Band as a Revision Surgery for Failed Vertical Gastric Sleeve or Roux-en-Y Gastric Bypass

2017

Lincey Alexida, Xiaohua Qi, Patrick B. Asdell, José M. Martínez Landrón, et al., Frederick Tiesenga

IAIM, 2017; 4(12): 37-42

Initial Learning Experience of Laparoendoscopic Single Site (LESS) Gastric Banding: Finding Predictors of Success

2011

Obesity Surgery

Research & Innovation

Research Experience

Research Assistant, Department of Surgery – Colon/Rectal, University of Illinois, Chicago, IL

Innovation Highlights

Pioneer in Single Incision Laparoscopic Surgery (SILS)
First General Surgery Robotic Epicenter Designation in Illinois (2014)
Innovations in minimally invasive surgical techniques
Development of advanced bariatric procedures

Experience Dr. Tiesenga's Expertise

Benefit from decades of surgical innovation and personalized care through NEXI's advanced telemedicine platform.