Our Staff

ABC_6036_ppDr. Kimberly Lentz

Kimberly J. Lentz M.D. graduated from the Indiana University School of Medicine in 1991 and completed Family Practice training at St. Vincent Hospital in Indianapolis in 1994. She is board certified in Family Practice. Dr. Kim is also Medical Director of Circle Health Partners. She has completed the International Lyme and Associated Diseases Society Training Fellowship and has been treating Lyme Disease since 2005.  She is founder of New Horizons Integrative Medicine in Zionsville, Indiana, in 2010.

Dr. Kim has attended and spoke at numerous training events including techniques in treating Tick-borne illness, use of nutraceuticals in treating chronic illness, herbal-based treatments, and Multi Systemic Infectious Disease Syndrome.

She is the wife of Dan, who established the practice with her and was the office manager for over 10 years. Dr. Kim is the mother of three kids.


Dr. Brett Satkamp

Dr. Brett Satkamp graduated from Indiana University School of Medicine in 2006 and completed a residency in Anesthesia in 2010, also at Indiana University.  He is board certified in Anesthesia and practiced in this specialty for five years before becoming aware of Lyme and it’s associated diseases through personal and clinical experiences.  He has attended educational conferences offered by the International Lyme and Associated Diseases Society (ILADS).  He is an active member of ILADS and the American Society of Anesthesiologists (ASA).

Dr. Satkamp has been working with patients at New Horizons Integrative Medicine since 2016.  He has a special interest in helping patients with tick-borne illness who also suffer from mold/mycotoxin illnesses.

He is married and the father of four children.


Dr. Ryan Hartig

Dr. Ryan Hartig, MD graduated from the University of Kentucky with a Bachelor of Science in Communications and Information Studies and a minor in Psychology.  He then studied Pre-Medicine sciences at Northern Kentucky University.  Following this experience, Dr. Hartig attended the University Of Louisville School Of Medicine earning a Doctorate in Medicine.  Dr. Hartig trained in the field of Internal Medicine at the Dartmouth-Hitchcock Medical Center in New Hampshire.

Dr. Hartig holds certifications in IV therapy from the American College for Advancement in Medicine and bioidentical hormone replacement therapy by The Academy of Preventive and Innovative Medicine. He has completed training with the International Lyme and Associated Diseases Society and is a current member of ILADS. Dr. Hartig is a Fellow with the Metabolic Medical Institute’s Integrative Cancer Therapy Program. He has also conducted further training in the fields of Swiss Biological Medicine, Environmental Medicine and Traumatic Brain Injury.

Dr. Hartig approaches medical problems with a comprehensive perspective. He is not only interested in “root cause resolution” of specific diseases, but addressing the overall health of a patient.