Chicago, IL  >> 866.586.1906

1901 S Meyers Rd, Suite 130, Oakbrook Terrace, IL 60181

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> > >  for men and women

The TCore20™ protocol was developed after years of learning exactly what does and doesn’t work when treating a hormone imbalance. The TCore20™ program is designed to naturally optimize key hormone levels and provide symptom relief for men and women.

While some clinics focus only on testosterone, our 20-week program includes bioidentical hormone medications, customized pharmacy-grade supplements, and all the supplies you need for home-administration. Our unique combination of products and our medical philosophy provide a comprehensive approach to help you feel amazing & live better.



Free Evaluation

Our dedicated Patient Care Coordinators are here to listen to your symptoms & health goals. Submit your information to receive a call from one of our Patient Care Coordinators and learn if Hormone Replacement Therapy is right for you. 


$99 Lab Work & Practitioner Consult

A certified phlebotomist will draw your blood and send it to a CLIA/CAP accredited lab for analysis. Our medical expert will review your results and work with you to design a program that fits your specific goals and needs.


Home Delivered Treatment

Your customized program containing all medications, supplements, and supplies is delivered discretely to your home for self-administration. No in-office injections are necessary. Your Patient Care Coordinator and medical expert are promptly available to answer any questions or provide guidance throughout the process.


George Teetzel
George Teetzel
I was interested in my test levels and my body assessment. Zach Kile, my representative messaged me this morning and was able to get me in the office this afternoon. Not only was he helpful,but the guy was working while on vacation. Tell me that isn't dedication. Audra, my phlebosimist was also very friendly and super upbeat. Everyone there was friendly and seem to not only like people, but enjoy their job. I'm excited to see my results. I'm going on 30, so I figured it would be wise to get checked
John Schuerger
John Schuerger
I have been a client of Zach for approximately 2 months and have noticed increased energy , workouts and focus. Thankyou to the entire staff.
Kevin McMahan
Kevin McMahan
From the moment you walk in the door, you not only feel welcomed, but you can tell you’re in the right place. In today’s world of little to non existent customer service, Affinty Health did not get the memo. Everyone there is not only very pleasant, but knows their jobs. That makes you very comfortable, knowing you’re in such great hands. This will make you feel better and you will probably avoid many future health issues, by taking control now. Life is short. Invest in yourself. We all could use more energy, drive, stamina and most importantly, we all deserve to feel better! I encourage both men and women to go see Zach and all the great people at Affinity Health! Trust the process, work hard and You will see results!!!
Anthony Gregorio
Anthony Gregorio
Affinity has great customer service! Zach has been extremely helpful in answering the myriad of questions I have on a weekly basis. Testosterone therapy has side effects, and I have experienced some of them. Zach has been there every step of the way to help me make the right choices to be the healthiest I have ever been. Thanks!!
I am very happy with the professionalism from Zack and everyone at affinity I’ve dealt with and I’m ecstatic at the results I am able to achieve through their products and services! Highly recommended!
shannon viti
shannon viti
Thank you Zach for the wonderful service you provided. Very professional, knowledgeable and prompt. You listened to my concerns and addressed them, set expectations about treatment and then exceeded them. Also a thank you to Jane. After our video visit I really felt heard and again all my concerns were addressed and then fully explain the process and products that would help me the most. I can not say enough. I will bell informing other women I know that voice similar complaints to call Affinity Whole Health. Thank you, Shannon
travis ludwig
travis ludwig
I can’t say enough good things about this entire practice. The people I’ve spoke to over the phone and met at the office were always nice and welcoming. Glen has also been extremely informative and responsive to all my questions. I have used other TRT practices in the past and was blown away with how professional and helpful this one was. I will be one of their clients for life. Keep up the great work. Thank you!


Your cost depends on the medications you are approved for during your consultation. Our programs typically range from $195 to $295 per month all-in. This all-in pricing includes your medications, supplements, supplies, shipping & handling, follow-up lab work and follow-up consultation. We never charge a membership fee. You also will be partnered with a dedicated Patient Care Coordinator as your point of contact throughout the process.


Bioidentical Hormone Therapy

We focus on treating hormone imbalances using a combination of key hormones including testosterone. We utilize additional treatments to balance the effects of testosterone and optimize your hormone levels. By treating the source of low testosterone, patients experience more energy, improved libido, better workouts and much more.

Peptide Therapy

We offer a range of peptides to enhance your results on specific health areas like weight management, sleep, joint pain, and lean muscle development.

Vitamin & Amino Acid Therapy

Our vitamin and amino acid products can jump-start your program by providing increased energy, better focus, and enhanced workout results.

Erectile Dysfunction Therapy

We can help men that are struggling with diminished sex drive and erectile dysfunction.

Prescription Anti-Aging Acne Treatment

Our prescription serum works to clear pores and increase skin cell turnover. This custom-blended serum can reduce the appearance of wrinkles, fine lines, discoloration, and rough skin caused by sun damage.


Dr. Michael Koehler is Affinity's Medical Director and a board-certified emergency medicine physician.  A native Texan, Dr. Koehler received his Doctor of Medicine from the University of Texas in San Antonio after obtaining his Bachelor of Science degree from the University of Notre Dame. Dr. Koehler completed his emergency medicine residency at Carolinas Medical Center in Charlotte where he also served as chief resident.  Following residency, Dr. Koehler provides quality emergency department care to thousands of patients in addition to supervising and educating medical students, residents, physician assistants, and nurse practitioners.

Dr. Koehler has a strong interest and experience with men's and women's hormonal therapy, peptide therapy and weight loss therapy.  He is also a member of the American Academy of Anti-Aging Medicine and holds a Certificate in Peptide Therapy.

In his spare time, Dr. Koehler enjoys weightlifting, watching football, and spending time with his wife and two sons.

Dr. Michael Koehler




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Located at 1901 S Meyers Rd, Suite 130, Oakbrook Terrace, IL 60181