Thomas F. Marren, MD
Thomas F. Marren, MD
Family Medicine


Thomas Marren, MD, is a board-certified family medicine physician who can take care of all your family’s health needs through all the stages of your life. This includes everything from preventive medicine to treating acute injuries. He has a special interest in dermatology procedures and wilderness medicine.  Dr. Marren is a certified examiner by the FMCSA and able to perform CDL exams.

Thomas earned his medical degree from Loyola University Chicago’s Stritch School of Medicine in Maywood, IL . He holds a master’s in physics from Northeastern Illinois University in Chicago. His bachelor’s degree is from Loyola University Chicago. Thomas completed his residency at Adventist Hinsdale Hospital in Hinsdale, IL. He is certified in basic life support and advanced cardiac life support.

When he’s not taking care of patients, Thomas enjoys mountain biking, hiking, archery, fishing and spending time with his wife and children. 

Dr. Marren is a FMCSA Certified Medical Examiner for commercial motor vehicle drivers.



Professional Education

Loyola Univ. Chicago, Stritch School of Medicine, Maywood, Illinois


Hinsdale Family Practice Residency, Hinsdale, Illinois

Hospital Affiliations

Ministry Our Lady of Victory Hospital
Stanley, Wisconsin

Ministry Sacred Heart Hospital
Tomahawk, Wisconsin

Ministry Saint Mary's Hospital
Rhinelander, Wisconsin

Ministry Saint Joseph's Hospital-Marshfield
Marshfield, Wisconsin

401 West Mohawk Drive
Tomahawk, WI 54487
To make an appointment:

240 Maple Street
Woodruff, WI 54568
To make an appointment:

Eagle River
930 East Wall Street
Eagle River, WI 54521
To make an appointment:
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