Who We Are

Dr. Kathryn Retzler

Sole Owner, HormoneSynergy® LLC.

The purpose of my life is to inspire millions of people to achieve vibrant health and longevity and to help prevent as many cases of premature death as possible. I believe every person has a unique path to vibrant health, and that optimal aging and healthy brain function are possible for everyone. I believe the more people I influence, the more precious, quality time they'll have to fulfill their purpose and to experience the joys and blessings of the world.

I believe many people settle for a negative definition of aging. I do not accept that aging means falling apart on schedule. I have a high standard for my physical, mental, and spiritual health, improving every year. I hold the same vision for my patients.

The tools I use to fulfill my purpose include sharing knowledge, providing authentic leadership, offering successful treatments, and continually improving my skills and education. I am grateful for my work, and committed to fulfilling my purpose.


I received my doctorate from the National College of Naturopathic Medicine in Portland, Oregon in 2001. After completing an internship in integrative medicine with Andrew Weil MD, and a residency in McMinnville, OR I decided to focus my enthusiasm, talents, and knowledge in building bridges between conventional and personalized / Integrative medicine. 

I founded HormoneSynergy® Clinic to help people achieve vibrant health, ideal brain function, and longevity. As a specialist in holistic medicine, I understand the role balanced hormones and neurotransmitters play in all areas of health. I completed two fellowships in preventive cardiology through the American Academy of Anti-Aging Medicine with Mark Houston, MD .  I attend and both lecture and teach at various age management, hormone and brain health seminars and conferences yearly, with gratitude to the mentors who've influenced my work--Rebecca Glaser, MD, Thierry Hertoghe, MD, Daniel Amen, MD and Dale Bredesen, MD (Bredesen Protocol™). 

I recommend effective, evidence based natural therapies, lifestyle changes, pharmaceutical medications if and when necessary and use bioidentical hormones to address the underlying causes of hormone imbalance to help restore health and vitality.

I am currently licensed with full prescribing authority in the states of Oregon and Washington.

I am available as a consultant to patients seeking individual health optimization and longevity as well as to medical professionals seeking training in Age Management Medicine, preventive cardiology and Bioidentical Hormone Replacement Therapy for both men and women. I am a regular lecturer and teacher for the AMMG (Age Management Medicine Group).

What people are saying about Dr. Retzler.

Daniel Soule

Sole Owner -  HormoneSynergy Inc. 

Manager - HormoneSynergy Clinic LLC

"Let me help you write a new life story!"

Each of us has a story about our life. It is continuously being written by our underlying beliefs, assumptions, and experiences. The story we write about our life defines us in the present and guides us toward our future. It either supports us or diminishes us. Growth and change begins when you accept personal story ownership: the recognition that you are the author of your own story. You can change your story at any time. When you change your story you will change your life. I can help you write the story about the life you want to have.

I am a counselor and certified spiritual and life coach. I love to motivate, inspire, and influence others to make positive change in their lives. I am passionate about life and learning. I'll use my passion for life, my skills and my own experience to help you navigate the gap between where you are and where you want to be, achieving the positive change you desire.

I am the clinic director for HormoneSynergy® Clinic LLC. In addition to spending time with my family, I enjoy regular exercise, biking, movies, and coastal getaways. Together with Dr. Retzler, I am committed to providing you an opportunity to change your life employing my passion, education, skills, and ever expanding personal experience.


I received my degree from Wichita State University and attended New West Seminary in Portland Oregon. I received my ICF coaching certification training from New Vibe Training Center and my certification in advanced clinical hypnotherapy and NLP from Apositiva Counseling and Training Center.


  • Wichita State University, KS. Psychology, Sociology/Anthropology
  • New West Seminary, Oregon City, OR. Interfaith Studies

Continuing Education

  • Dr. Daniel Amen - *Unchain Your Brain - Breaking the addictions that steal your life!
  • New Vibe Training, Portland OR- ICF Coaching Certification
  • Apositiva Counseling Center, Portland, OR. Certification in Advanced Clinical Hypnotherapy and Neuro-linguistic Programming,
  • AMPAC UniversityCertification in Clinical Hypnotherapy
  • Kansas College of Chinese Medicine, Wichita, KS.
  • Total Health Works School of Massage, Wichita, KS.
  • Your New Life Story®Health and Wellness Coaching Certification