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Timothy J. Stear, D.O.

Bariatric Surgeon

Dr. Stear, a board-certified general surgeon, has committed his career to enhancing patients' well-being. Specializing in minimally invasive surgical approaches for weight loss, such as laparoscopic and robotic procedures, he brings a blend of precision and innovation to his practice. 

His emphasis on tailored care  empowers patients to attain their weight loss objectives while enhancing their overall quality of life.
Work Experience

Tiesenga Surgical Associates, S.C.
General Surgeon - Elmwood Park, IL
2022 – Present

Edward Medical Group
General Surgery and Trauma Surgery – Naperville, IL
2021 – 2022

Education & Residency

Franciscan Health
Categorical General Surgery Residency – Olympia Fields, IL
2016 – 2021

Midwestern University
Chicago College of Osteopathic Medicine, DO – May 2016
2012 – 2016

Midwestern University
MA Biomedical Sciences – May 2012
2011 – 2012

University of Western Australia
Study Abroad – Perth, Australia
2009

University of Illinois at Urbana-Champaign
BS Molecular and Cellular Biology – May 2011
2007 – 2011

Honors & Awards

Dean’s List
University of Illinois
2011

Senior of the Year
Kappa Delta Rho Fraternity – University of Illinois
2011

James Scholar Award
University of Illinois
2007 – 2008

Research Experience

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

Licensure & Certification

Advanced Trauma Life Support Certification
2017 – 2021

Advanced Cardiac Life Support Certification
2019 – Present

Basic Life Support Certification
2019 – Present

American Red Cross CPR-AED Certification
2012

Phlebotomy Certification
2011

Research & Publications

Stear T. Item writer for the TWIS Liver Quiz
The SCORE Portal. http://www.surgicalscore.org – Published 8/2/2020
2020

Surgical Wound Infection Rates: Intraoperative vs Preoperative Hair Removal
First Author – Publication Pending
2019

Valvular Cytomegalovirus Endocarditis
Annals of Thoracic Surgery. 2016 Aug;102(2):e105-7.
2016

Normal Human Reflexes Educational Modules
Midwestern University, Physiology Department – Downers Grove, IL
Kathy O’Hagen, PhD
2013

Labchart 7 used to record and document experiments
Midwestern University, Physiology Department – Downers Grove, IL
Kathy O’Hagen, PhD
2013

Outcomes of Non-pharmacological Treatment of Behavioral Insomnia of Childhood in a Sleep Clinic Population
Poster presentation at SLEEP 2012
26th Annual Meeting of the Associated Professional Sleep Societies on June 9-13, 2012
OSF St. Francis Medical Center, Sleep Medicine Department, Peoria, IL
Sarah Zallek, MD
2011

Professional Experiences

Program Director
General Surgery Residency, Daniel Vera, MD; Franciscan Health
Olympia Fields, IL
2016 – 2021

Early Clinical Contact Program
Early Clinical Contact Program, Dr. Daniel Fassett, MD, Neurosurgery, OSF St. Francis Center for Health
Peoria, IL
2014

Early Clinical Contact Program
Dr. Perry Marshall, DO, Emergency Medicine, St. James Hospital & Health Center
Olympia Fields, IL
2013

Early Clinical Contact Program
Dr. Lismaida Maranto, MD, Emergency Medicine, Resurrection Medical Group
2013

Early Clinical Contact Program
Dr. Vivian Salazar, MD, Internal Medicine, OSF St. Francis Center for Health
Peoria, IL
2013

Clinical Shadowing
Dr. Rachael Saccaro, DO, Central Medical Clinic
Chicago, IL
2011

Professional Attendance

Trauma and Acute Care Symposium
2022

Minimally Invasive Surgery Symposium
2019

Abdominal Wall Mobile Bioskills Lab sponsored by Allergan
Hands-on cadaver lab featuring anterior/posterior component separation and Rieves-Stoppa repair
2019

Franciscan Health General Surgery Residency Website Design and Manager
2019

Franciscan Health Research Day Symposium
2018

DO Day on the Hill in Washington, DC
Lobbied for patient and physician rights on Capitol Hill
2014

Student Osteopathic Medical Association (SOMA) Spring National Convention
Attended the House of Delegates meeting and voted on petitions for SOMA and the AOA
Washington, DC
2014

Student Osteopathic Medical Association (SOMA) Summer National Convention
Attended the House of Delegates meeting and voted on petitions for SOMA and the AOA
Chicago, IL
2013

Illinois Osteopathic Medical Society (IOMS) Lobby Day
Lobbied for patient and physician rights
Springfield, IL
2013

DO Day on the Hill
Lobbied for patient and physician rights on Capitol Hill
Washington, DC
2013

Student Osteopathic Medical Association (SOMA) Spring National Convention
Attended the House of Delegates meeting and voted on petitions for SOMA and the AOA
Washington, DC
2013

Volunteer & Personal Interest

St. Baldrick’s Foundation for children with cancer
Yearly fundraising participant and volunteer
2012 – Present

West Suburban PADS at First United Methodist Church of Oak Park
Prepare meals and sleeping space for homeless at my community church
2013 – 2019

Speed Dating for USMLE and COMLEX
Created, organized, and ran an event for first and second year Midwestern University medical students to discuss and ask third year students how to prepare for boards
2014 – 2015

Chicago Marathon
Medical volunteer at the medical tent
2014

SOMA Spring Auction
Organizer and host for the Spring Auction to benefit medical students traveling to “DO Day on the Hill”
Washington, DC
2014

Community Health Clinic
Medical volunteer for student-run health clinic serving underprivileged patients on the south side of Chicago
2013 – 2014

Relay for Life
Fundraising in association with the University of Illinois College of Pharmacy at Rockford
Educational poster presentation on Diabetes and Healthy Living
Rockford, IL
2013

Dive for Diabetes
Planned and organized a charity skydiving event with Chicagoland Skydive Center
Raised funds for the American Diabetes Association
Offered free glucose and blood pressure screenings
Rochelle, IL
2013

Casa De Salud medical mission trip to Peru
Volunteered for one week of daily clinics hosted in various parts of Iquitos, Peru
Educational poster presentation on Diabetes and Healthy Living
2013

Multiple Sclerosis Walk
Managed the first aid station
2013

SOMA Spring Auction
Volunteered for one week of daily clinics hosted in various parts of Iquitos, Peru
Participant and volunteer for the Spring Auction to benefit medical students traveling to DO Day on the Hill
Washington, DC
2012 – 2013

Chicago Marathon Medical Tent
2012

Alpha Epsilon Delta Pre-Medical Honors Fraternity
Volunteered weekly at local nursing homes and shelters in the Champaign-Urbana area
2009 – 2011

Professional Organizations

American College of Surgeons
2019 – Present

American College of Osteopathic Surgeons
2017 – Present

Vice President of Chicago College of Osteopathic Medicine 2016 Class Council
Coordinator of class fundraising and social events
Monthly Student Government meetings
2014 – 2016

Sigma Sigma Phi Medical Honors Fraternity
Quarterly Service Projects
Chaired Service Project
2013 – 2016

Vice President of Student Osteopathic Medical Association
Organization and Planning for Spring Auction
Organization and Planning for Fall Auction
Organization and Planning for 1st Year Student Medical Equipment Sale
2013 – 2014

American Osteopathic Association
2012 – present

American Medical Association
2012 – present

Alpha Epsilon Delta Pre-Medical Honors Fraternity
As a graduate, I spoke to undergraduate members and gave presentations such as “Getting into Medical School” and “What is a DO?”
2009 – 2011