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Meet Dr. Page

As the founder of the Wisconsin Institute of Functional Medicine, Dr. Tracy Page is passionate about helping her patients expand their education and understanding of how to age well. With triple board certification by the American Board of Obesity Medicine, the American Board of Anti-Aging/Regenerative Medicine, and the American Board of Physical Medicine and Rehabilitation.

Dr. Page has over a decade of experience in her field. She has extensive knowledge in human performance optimization, sports medicine, metabolic and cellular medicine, and bioidentical hormone therapy.

Dr. Page’s Educational Background

Dr. Page possesses a master’s degree in Cell and Molecular Biology from the Washington University School of Medicine as well as a Graduate Certificate in Integrative Medicine from The George Washington University in Washington D.C. Additionally, she has engaged in two fellowships: Interventional Spine and Sports Medicine at the Hospital for Special Surgery in New York and Anti-Aging, Metabolic, and Functional Medicine at the American Academy of Anti-Aging Medicine. Dr. Page also showcases advanced education in Cellular Medicine and Peptide therapy as a founding fellow (FSSRP) of the Seeds Scientific Research & Performance (SSRP) Institute. She now proudly serves as SSRP faculty and educates physicians and health care professionals learning cellular medicine.

Her Reputation

Patients who entrust their care to Dr. Page do so with confidence. A diplomat of the Board of the American Academy of Anti-Aging Physicians, Dr. Page is recognized as a renowned physician in peptide therapy in the Midwest United States. Her background and knowledge allow her to transition effortlessly between the science and practice of medicine, and she has earned her reputation as the only woman physician in the Wisconsin area who possesses her level of specialized knowledge.

Dr. Page is the host of a podcast “Change the Way You Age,” which focuses on optimizing your body and brain. She shares insights from Functional, Cellular, and Regenerative Medicine that will genuinely change the way you age.

When not helping patients at the Wisconsin Institute of Functional Medicine, Dr. Page spends her free time with her husband, Doug, and his three children. She enjoys playing sports, golfing, and exercising. A lover of life and all it has to offer, she thrives when presented with the opportunity to help others harness the joy of simply being alive, healthy, and well.

Meet Lyndsay Hayes, APNP

Lyndsay has been passionate about improving patient care since she graduated with her first nursing degree and while she continued her education to become a provider. She brings over 17 years of patient centered care. Lyndsay is passionate about health and wellness and has spent the last several years helping patients look and feel their best.

Lyndsay is board certified by both the American Nurses Credentialing Center (Family Nurse Practitioner) and by the Oncology Nursing Certification Corporation (Oncology Certified Nurse).

Lyndsay’s Background

Lyndsay has been passionate about improving patient care since she graduated with her first nursing degree in 2004 from the University of Wisconsin-Milwaukee. After several years of nursing, she realized how much more she had to offer patients and the improvements in patient care that were needed. It is evident throughout her entire career that she is truly patient focused.

In 2011, Lyndsay returned to school and successfully graduated from Indiana State University with her Master’s in Nursing Administration. She then took on a leadership role where she was able to develop and implement improvements in patient care. She spent years educating nurses and staff on the importance of treating the patient in a holistic manner, and not just their disease.

Lyndsay has celebrated many successes in her career, but the most notable was her transformation of a cancer care program for patients diagnosed with cancer and going through treatment. She became Oncology Certified in 2016 and worked hard to improve patient education, quality of cancer care and survivorship. She recognized the importance of health and wellness and the absolute necessity to think creatively when it came to traditional medicine. Lyndsay was recognized for her efforts in patient centered care and led the initiative to expand similar cancer programs statewide.

In 2018 Lyndsay completed her Advanced Practice Nursing program and has spent the last 4 years working in the Aesthetic and Plastic Surgery industry. She is an expert in working with patients and helping them look and feel their best. Lyndsay recognizes the need to shift away from the traditional way we treat patients, and to focus on a more functional and holistic care model.  She has recently started her journey towards certification in Functional Medicine and looks forward to helping her patients achieve their health and wellness goals.

When Lyndsay is not providing patient care, she enjoys spending time with her 3 young children and playing golf with her husband. She also loves to work out and prides herself on living life the way she encourages her patients to.

Meet Tiffany Dorton, FNP

Tiffany has been passionate about helping people live longer healthier lives by treating the whole person since she began her career as a RN in 2013. She has over 15 years of experience providing patient care. Tiffany is passionate about helping people look and feel their best by implementing practices that fit each person's own unique individual needs.

Tiffany is dual board certified by both the American Nurses Credentialing Center (Family Nurse Practitioner) and by the American Academy of Nurse Practitioners (Family Nurse Practitioner). She is also a certified Functional Medicine Practitioner.


Tiffany is passionate about helping people live healthier longer lives by taking approaches to their health that are right for them. Her career in healthcare started in 2007 as a CNA. She graduated with her Associate Degree of Nursing from Northeast Wisconsin Technical College in 2013 and her Bachelors Degree of Nursing from University of Wisconsin Green Bay in 2014 . She worked as an ICU nurse and found herself continuously asking the question “Why are we treating everyone the same?” She saw an opportunity to improve healthcare and decided to further her education. She graduated with her Masters of Science – Family Nurse Practitioner degree from Chamberlain College in 2019 with dual board certification. After becoming a NP, she continued to find herself asking “why”. She started to research and learned about functional medicine, and knew this was where she was meant to be. She obtained her Functional Medicine Practitioner Certification in 2020. She is a strong advocate for treating the entire person through functional and holistic measures.

In her free time she loves to research anything health- and healing-related to better serve her patients. She is always learning! She also loves to workout, read, be in nature, and travel.

Meet The Staff

Pursuing the mission of bridging the gap between conventional and holistic medicine, our team is dedicated to helping patients get to the root cause of their health problems. We seek to be your functional medicine partner, so you can truly feel years younger, lose the weight that has been bothering you, address and eliminate fatigue, clear your mind and improve concentration, and allow you to regain your vitality.

Meet our team!  Please know that we cannot wait to welcome you to our office, learn about your goals, and help you achieve the whole-body health and wellness you have been imagining. The team at the Wisconsin Institute of Functional Medicine is ready to help you feel better!

Lisa Renier
​​Practice Manager – Executive Assistant

Nick Franckowiak

Whitney Wenham, LPN
​​Clinical Manager

​​Jenn Abbs
​​Receptionist & scheduler

Billie Jo Lenz, LPN
​​​​Clinical nurse

Amy Zwicky
​​​​​​Licensed Esthetician – Laser specialist

Torrie Friberg, LPN
​​​​​​Clinical nurse

Terrie Lee Walker, CPT, CMA
​​​​Phlebotomist – Medical assistant

Amanda Redlin
​​​​Receptionist & scheduler

Hannah Porter, LPN
​​Clinical nurse

Susan Ertl-Knutson, RN
​​Clinical nurse