About Us

Your Health Is Our Passion

We established Free Body Physical Therapy in 2015 with the intention of breaking the mold of standard physical therapy practices. At Free Body Physical Therapy, your body is treated with individuality and care. No two bodies respond to an injury the same way, and that’s why no two therapy programs should be the same. Free Body Physical Therapy was founded to get you back to your best self. Let’s work together to reach your goals!

Our Vision is to create an environment where every individual is empowered to reach their peak physical capacity to live a more fulfilling life

Our Mission is to offer each client an outstanding, individualized experience through one on one physical therapy & advanced performance training. We aspire to help clients get back to doing the things they love; and in doing so, build a stronger community.

We do this outside of the clinic through mentorship & by supporting physical therapists locally & internationally with educational programs to enhance their professional knowledge & abilities.  

Things we do

  • Travel globally to train Physical Therapists
  • Mentor Fellows in Training (Less then 1% of all Physical Therapists nationwide are Fellowship trained)
  • Lab Assistant for the Manual Therapy Institute Fellowship Program
  • Curated programming for local businesses & schools
  • Onsite physical therapy for sporting events & local fests

Philanthropy: Our mission is to improve the quality of Physical Therapy in Latin America.  When we teach internationally, we train local Physical Therapists in how to treat patients more effectively and efficiently as well as help prevent unnecessary surgeries, unnecessary imaging & prolonged medication use. 

  1. Nicaragua training Physical Therapists
  2. Ecuador post Earthquake training Physical Therapists & purchasing medication and food.


Nicaragua Training Physical Therapists

Five Columns
  • Training Physical Therapists at El Hospital Miguel Hilario Alcivar & treating patients
  • Purchasing medication for a pop up run by a nurse
  • Purchasing 1,000 lbs of rice for a local church
  • Playing with kids at the UNHCR camp

Ecuador Post Earthquake

Meet your doctors

Dr. Marc Gregory Guillen

Dr. Marc Gregory Guillen


Free Body Physical Therapy is owned and operated by Dr. Marc Gregory Guillen, PT, DPT, OCS, FAAOMPT. After receiving a doctorate in physical therapy and working at several PT clinics along the west coast, Dr. Guillen completed a physical therapy fellowship program in Manual Therapy that less than 1% of physical therapists in the U.S. have completed. This expertise in Manual Therapy provides hands-on knowledge to help patients reach their physical therapy goals. Dr. Guillen offers a close one-on-one relationship with patients where his goal is to educate, empower and maximize recovery in as few visits as possible..Marc Guillen is currently in the process of becoming a Certified Manual Trigger Point Therapist through Myopain Seminars and incorporates Dry Needling in his practice. Common conditions that Dr. Guillen treats include back pain, neck and shoulder pain, knee and ankle injuries, post-surgery rehabilitation, arthritis, chronic pain conditions, sports injuries, and much more. Free Body Physical Therapy accepts most insurance, Medicare, worker’s comp and self-pay patients. Dr. Guillen is fluent in both English and Spanish.

Marc Gregory Guillen, PT, DPT, OCS, FAAOMPT Fellow, American Academy of Orthopedic Manual Physical Therapists Board Certified, Orthopedic Physical Therapy

“Your health is my passion, and I’m excited to begin this journey with you.”

Dr. Marissa Nemec

Dr. Marissa Nemec


Dr. Marissa Nemec, PT, DPT received her bachelor’s degree in Exercise Physiology and Doctorate of Physical Therapy from Marquette University in Milwaukee, WI. She has worked with a wide variety of orthopedic conditions and has participated in continuing education, focusing on her manual therapy expertise. Marissa is a Certified Manual Trigger Point Therapist through Myopain Seminars and incorporates Dry Needling in her practice. She additionally specializes in treating vestibular dysfunction including BPPV, vestibular hypofunction and concussion. At Free Body Physical Therapy, she is looking forward to enhancing her knowledge base and skill set under the mentorship of Dr. Guillen. As a former dancer and now healthcare professional, Marissa strives to optimize human movement for all individuals. She believes in educating patients, providing personalized care, and having a bit of fun along the way. Outside of the clinic, Marissa stays active by attending barre classes and roller blading, but also enjoys less productive activities including shopping, relaxing with her cat, and indulging in Chicago’s food scene with friends.
Dr. Michal Czesny

Dr. Michal Czesny


Dr. Michal Czesny, PT, DPT attended Northwestern University in downtown Chicago for his Doctorate in Physical Therapy after receiving his bachelor’s in Exercise Science from Loyola University-Chicago. Michal has experience treating a range of both acute and chronic musculoskeletal conditions in addition to managing post-operative rehabilitation and care. As a clinician, Michal prides himself on using a combination of education, exercise, and manual therapy to create a safe, fun environment for patients to meet their various goals and become as independent as possible. He enjoys taking time to keep up with research so that he can provide the most relevant information to his patients so they can make the best decisions for themselves with their care.Michal is currently in the process of becoming a Certified Manual Trigger Point Therapist through Myopain Seminars and incorporates Dry Needling in his practice.  Michal played soccer competitively from a young age through college and is eager to funnel that same competitive energy into getting his patients better and faster with the one-to-one model that Free Body Physical Therapy provides. For Michal, successful treatment is not just by improving pain or function but by showing patients how they keep themselves well, too. This Wisconsinite has been living in Chicago for the last 10 years and is ecstatic to start serving the community he now calls home. When he is not thinking about physical therapy, Michal enjoys spending time with his partner and dog, playing board games like Settlers of Catan, some casual computer gaming, and cast iron cooking. As an Arsenal FC fan who bleeds white and red, don’t be surprised if you find Michal at a pub on match day at 6 in the morning supporting his club!
Dr. Aubrie Krause

Dr. Aubrie Krause


Dr. Aubrie Krause, PT, DPT received her Bachelor’s degree in Kinesiology from the University of Wisconsin – Madison, her Master’s degree in Kinesiology from A.T. Still University, and her Doctorate in Physical Therapy from Rosalind Franklin University. She enjoys treating patients with a variety of orthopedic conditions and has experience with post-surgical patients as well as weekend warriors and those with acute or chronic musculoskeletal conditions. Aubrie believes in treating each patient from a whole body perspective incorporating education, exercise, and manual therapy to help patients achieve their goals while gaining a better understanding about their body along the way.

Aubrie considers herself a life-long learner and is currently in the process of completing advanced training in Orthopedic Manual Physical Therapy on the path to become a Fellow of the American Academy of Orthopedic Manual Physical Therapy.

A Wisconsin native, Aubrie enjoys spending her time outside the clinic exploring all that Chicago has to offer; from trying new restaurants and going to local events to playing beach volleyball in the summer. She likes to keep an active lifestyle including weightlifting, yoga, and any activity that allows her to spend as much time outside as possible.

Free Body Welcomes New Patients