“It takes a team.”

Our providers care deeply about their patients. They take the time to listen to and validate their patients' health concerns which allows them to ultimately get to the root cause of their symptoms. Rather than rush through patients, they spend quality time with each patient, listen to their health concerns, and work diligently to truly optimize their health.

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Providers

Dr. Mark Holthouse, MD, IFMCP

Medical Director

Dr. Mario Brus, MD

Functional Pediatrician

Dr. Jennifer Hudson, DO, FACOG

Functional Women’s Health & OB/GYN

Amber Warren, PA-C, IFMCP

Adult Functional Practitioner

Karen Callagy, PA-C, IFMCP

Adult Functional Practitioner

Amy Ray, FNP

Adult Functional Practitioner

Jessica Bennett, CNM, APRN

Functional Women’s Health & Midwifery

Michael Sermon, PA-C

Adult Functional Practitioner

Jessica Santos, FNP-C, IFMCP

Adult Functional Practitioner

Heidi Arens, FNP, IFMCP

Adult Functional Practitioner

Stefanie Magee, PA-C

Pediatric & Adult Functional Practitioner

Ansley Pugh Functional Medicine of Idaho

Ansley Pugh, FNP-BC

Adult Functional Practitioner

Olivia Mangeac, PA-C

Pediatric Functional Practitioner

Tamra Geryk, FNP-C

Women’s Health Functional Practitioner

Christina Rust, DPT, PA-C

Adult Functional Practitioner

Janessa Tenney, PA-C

Adult Functional Practitioner

Nadia Kravchuk, DNP, FNP-C

Pediatric Functional Practitioner

Registered Nurses

Lauren Numedahl, RN

Clinical Educator

Annie Sparks, RN

Registered Nurse

Claire Fuller, RN

Registered Nurse

Nutritionists & Health Coaches

Alexis Villaret, MS

Functional Nutritionist

Marianne Green, RD

Functional Nutritionist

Lexi Moore, RD

Functional Nutritionist

Jenni Terry, FMCHC, NBC-HWC

Health Coach

Lois Payne, FMCHC, NBC-HWC

Health Coach

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Heidi Arens, FNP

Heidi received a Bachelor of Science in Nursing from Point Loma Nazarene University in 2008. For 11 years, she worked at Scripps Health in San Diego, California caring for patients with a myriad of cardiovascular and metabolic diseases. She has also worked extensively as a float nurse for 9 hospitals in a wide variety of specialties, both in San Diego and Denver.

Throughout her career, she has embraced numerous leadership roles working with interdisciplinary teams to improve clinical outcomes, care delivery, and patient satisfaction. Although caring for people during an acute health crisis is incredibly rewarding, Heidi saw a need for a different approach that could help people address the root cause of illness and empower them to take an active role in transforming their own health. This inspired Heidi to become a Family Nurse Practitioner and specialize in functional/integrative medicine. Heidi received a Master of Science in Nursing from Azusa Pacific University in 2017 and is a board certified Family Nurse Practitioner. She has done further training with the Institute for Functional Medicine, as well as specialty training in IV therapy, ozone therapy, and prolozone therapy. This training has equipped her with an entirely new set of tools to help identify the underlying causes of disease or dysfunction and partner with patients to restore and maintain health.

For the past several years, she has been working in the field of integrative and functional medicine helping patients with cardiometabolic dysfunction, gastrointestinal disorders, SIBO, food intolerances, acute and chronic infections, various environmental exposures, thyroid dysfunction, autoimmune diseases, and hormonal imbalances. She has a strong clinical interest in helping patients with mold related illness, chronic fatigue, and mitochondrial dysfunction. Heidi believes that achieving optimal health takes a village and she is honored to be part of a dynamic interdisciplinary team at Functional Medicine of Idaho. She looks forward to partnering with you and helping you on the journey towards vibrant health.

Outside the office, you can find Heidi traveling the world, trekking up mountains, at the yoga studio, attending a conference, listening to podcasts, or cooking something delicious.

Jennifer Hudson, DO, FACOG

Dr. Jennifer Hudson obtained her medical degree from Virginia College of Osteopathic Medicine (2007) and completed her residency training in OB/Gyn at Wright State University/Wright-Patterson Air Force Base in Dayton, OH (2011). She is a board certified OB/Gyn specialist through the American Congress of Obstetrics & Gynecology (2012). For her functional medicine training, she has completed the Kresser Institute’s ADAPT Framework Level One course and is currently working toward her certification through the Institute of Functional Medicine. She transitioned from conventional OB/Gyn practice in 2019 to pursue professional goals in assisting women of all ages in their quest of optimizing health and promoting healing by identifying the root cause of symptoms.

Her interest in Functional Medicine started with her own journey to get healthier in preparation for pregnancy, and she continues to reap these rewards every day in her own life and that of her family. She provides care for women with an integrative and holistic perspective; her favorite clinical interests include fertility, natural birth, lactation, family planning/contraception, gynecologic procedures, and minimally-invasive gynecologic surgery. Dr. Hudson boasts an extremely low cesarean rate and loves partnering with local birth workers to foster the beautiful process of childbirth in a hospital. She has privileges at St. Luke's facilities.

At this time, Dr. Hudson is narrowing her practice to Functional obstetrics, preconception/fertility, and gynecologic surgery but is continuing to offer Well Woman care and other gynecological needs on a limited basis. For primary care and general functional medicine needs, please seek a consult with one of our adult functional medicine providers.

Dr. Hudson moved to Idaho in 2011 as a newlywed and has called this “honeymoon” home ever since. She describes herself as a former New Yorker, collegiate athlete, Air Force veteran, and now a crunchy mom who wants to share her journey of natural health with fellow women. When not in the office, Dr. Hudson enjoys hiking the Boise foothills, hot springs, paleo cooking, travel, sleep, and her pets Lucy, Sunny, and June.

Please note: Dr. Hudson is currently only accepting OB patients at this time.

Nadia Kravchuk, DNP, FNP-C

Nadia is a board certified Family Nurse Practitioner with a Doctor of Nursing Practice degree. She offers functional pediatric primary care, including well-child checks and acute visits, in the Pediatric Department of the Functional Medicine of Idaho Meridian Wellness Center.

Nadia and her family immigrated to the United States in 1989 where they first settled in Oregon and then moved to Idaho in 2001. Complementary medicine practices were embedded into her lifestyle at a young age, and she has implemented these principles into her conventional medicine practice throughout her career. She has more than 15 years experience in a variety of medical environments, including emergency room, intensive care unit, pediatrics, obstetrics and gynecology, family practice, and aesthetics.

Nadia joined Functional Medicine of Idaho so that she can combine functional principles with the foundations of conventional medicine to address the underlying causes of disease and promote optimal wellness. As an avid gardener, beekeeper, and sustainable living enthusiast, she understands the importance and role of optimizing nutrition, sleep, physical, spiritual, and emotional well-being. She has a passion for pediatric functional medicine and understands that early recognition and interventions can correct imbalances, prevent chronic illness, and improve overall outcomes for children.

Nadia obtained her Bachelor of Science in Nursing at Northwest Nazarene University. She earned both her Master’s of Science in Nursing and Doctor of Nursing Practice through Frontier Nursing University. In 2017, she was the recipient of the HCA Excellence in Nursing Award. She is currently working towards her certification with The Institute for Functional Medicine. Outside of work, you will find Nadia working on her urban homestead, hiking, foraging, camping, snowboarding, and spending time with her husband and her dog, Wolfy. She is also fluent in both English and Russian.

“It takes a team.”