Functional medicine is an approach that looks at the how and why of chronic symptoms and disease to address the root cause for each individual in order to restore and optimize health and wellbeing. It is highly personalized, and allows for a strong, problem-solving partnership between patient and practitioner. Our team is ready to partner with you in your health and wellness. 


Dr. Lori Zettell M.D.
Owner, Founder, & Practitioner

Dr. LoriAnn Zettell completed her Obstetrics and Gynecology residency at one of the busiest inner-city obstetric programs in the country.  After attending an integrative medicine conference in New York in 2015, Dr. Zettell decided to pursue additional training in functional medicine. She is a fully certified Functional Medicine Practitioner through the Institute for Functional Medicine. She also holds certifications from the American Board of Obstetrics & Gynecology and the American Board of Wound Medicine & Surgery. Additionally, she is a preceptor for the BaleDoneen Method for cardiovascular disease & stroke prevention. Dr. Zettell desires to help her patients gain control over symptoms that may have taken over their lives, and she considers it a privilege to partner with you in looking outside the box to get to the root of it all. 


Dr. Daniel Knobloch M.D.

Dr. Daniel Knobloch graduated from Wayne State University School of Medicine. He served as a Navy Physician, had a solo family practice, and served in emergency Medicine before being called into Functional Medicine. He began attending the Institute for Functional Medicine while in Nome, Alaska, before transitioning back to Michigan. Since then, has has continued his training and is now an important part of the OBX team. He's passionate about getting to the root cause of issues and helping to change the face of health care at the grass roots level, starting here in his hometown of Marshall, Michigan.


Dr. Georgia Balsley
Naturopathic Doctor & Master Herbalist

Bio coming soon!



Brandi Boone
Nurse Practitioner

Brandi is a women's health nurse practitioner and certified nurse-midwife who has been in practice for 12 years. She has completed all of the functional medicine coursework through the Institute for Functional Medicine (IFM) and is working toward certification. Her specialty areas are hormonal health, fertility, gut health, and chronic infections (such as Lyme). She believes that every person is unique as is each person's road to wellness. There are often multiple areas of imbalance that can be addressed, and everything is connected, so healing in one area will inevitably result in healing in other areas.


Shelley Singleton
Health Coach

As a health coach, my role is to support you in identifying what is making you feel unwell and work with you to make gradual, sustainable diet and lifestyle changes so you can feel good again and enjoy life! Functional medicine looks for the root cause of your symptoms and as the health coach, I bridge the gap between the doctor and patient! I’m with you every step of the way.

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Lori Seckinger
Program Assistant

After exploring South Carolina, then Northern Michigan, I finally returned to my Southern Michigan roots!


I have a passion for health, wellness, and everyone feeling their best inside and out. Throughout my own health journey, I have felt the benefits first-hand and know how important and difficult lifestyle changes can be.


When I am not managing the OBX Functional Medicine office, I enjoy traveling to new places, walking with Kaya (our Goldendoodle), gardening, cooking, kayaking, and being creative.