Team

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Providers

Dr. Mark Holthouse, MD, IFMCP

Chief Medical Officer

Dr. Mario Brus, MD

Functional Pediatrician

Dr. David Musnick, MD, IFMCP

Functional Medicine Internal Medicine Doctor, Functional Sports Medicine Physician

Dr. R. Lynn Carlson, MD, IFMCP

Medical Doctor

Michael Sermon, PA-C

Medical Director & Adult Functional Practitioner

Jennifer Paulson, DNP, FNP-BC, APHN-BC, IFMCP

Adult Functional Practitioner

Amy Ray, FNP, IFMCP

Adult Functional Practitioner

Jessica Bennett, CNM, APRN

Functional Women’s Health & Midwifery

Elizabeth Hingley, NP-C, IFMCP, CDCES

Adult Functional Practitioner

Gavin Guard, PA-C, CISSN

Adult Functional Practitioner

Kristin Gomes, APRN-CNM

Women’s Health Functional Practitioner

Aaron Dykstra, DNP, FNP-C

Pediatric Functional Practitioner

Olivia Mangeac, PA-C

Pediatric Functional Practitioner

Tamra Geryk, FNP-C, IFMCP

Women’s Health Functional Practitioner

Christa Inzer Castillo MSPAS, PA-C, MPH

Adult Functional Practitioner

Janessa Tenney, PA-C, IFMCP

Adult Functional Practitioner

Nadia Kravchuk, DNP, FNP-C

Pediatric Functional Practitioner

Karen Callagy, PA-C, IFMCP

Adult Functional Practitioner

Kaitlin Cooley, FNP-C

Adult Functional Practitioner

Registered Nurses

Lauren Numedahl, RN

Clinical Educator

Annie Sparks, RN

Registered Nurse

Health Coach & Nutritionists

Lois Payne, FMCHC, NBC-HWC

Health Coach

Marianne Green, IFNCP, RD

Functional Nutritionist

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R. Lynn Carlson, M.D., IFMCP

Dr. R. Lynn Carlson is a remarkable physician with a passion for helping others achieve vibrant health and overcome chronic diseases. From his humble beginnings in Kenai, Alaska, he has emerged as a beacon of hope and a trusted expert in Functional Medicine. Dr. Carlson's journey to becoming a Functional Medicine practitioner began when he faced a personal health challenge. Twenty-two years ago, he was diagnosed with Systemic Lupus, a condition that brought him debilitating joint pain. Determined to find a solution beyond relying solely on prescription medications, he followed his wife's advice and delved into the world of Functional Medicine.

With a newfound understanding of how the body functions and what truly promotes well- being, Dr. Carlson embarked on a transformative path. Through comprehensive lifestyle changes and targeted treatments, he successfully reversed most of his Lupus symptoms. Inspired by his own remarkable recovery, he dedicated himself to helping others with chronic diseases regain control of their lives. Dr. Carlson possesses a range of expertise, specializing in various complex pain syndromes such as mold illness, Mast Cell Activation Syndrome, migraines, and CRPS. He has also made significant strides in assisting patients with neuroinflammatory conditions like MS, ALS, autism, and dementia. Given his personal experience with autoimmune disease, particularly Lupus, he brings a unique perspective and compassion to his practice.

Driven by a desire to be closer to family, Dr. Carlson and his wife made the courageous decision to leave the picturesque landscapes of Alaska and embrace a new chapter in their lives. While he thrives in his professional endeavors, Dr. Carlson also cherishes his downtime. Whether it's indulging in a captivating book, creating treasured memories with loved ones, or selflessly giving back through church and community service projects, he embraces life with zest and enthusiasm.

If you're seeking a compassionate physician who not only understands your struggles but has also triumphed over them, look no further than Dr. R. Lynn Carlson. With his friendly demeanor, wealth of knowledge, and unwavering commitment to your well-being, he's ready to guide you on a remarkable journey towards optimal health. Don't let chronic illness hold you back—let Dr. Carlson help you reclaim your vitality and live your best life.

Dr. David Musnick, MD, IFMCP

Dr. David Musnick is seeing patients through FMI Center For Optimal Health in Eagle, ID. To inquire about being seen by Dr. Musnick, follow this link to the FMI Center For Optimal Health here or call (208) 609-9130.

David Musnick MD is a master clinician and diagnostician in both Orthopedic, Sports Medicine and Functional Medicine. He is board Certified in Sports Medicine and Internal Medicine. He has 33 years in Sports Medicine and Internal Medicine and 26 years in Functional Medicine. He has developed his own unique approach to assessment and treatment especially in the areas of Orthopedic Medicine and Concussion and brain based problems. He has seen thousands of cases over the years and has been published in numerous books, speaking locally and nationally on numerous conditions, especially Osteoarthritis and Concussion. He is Certified in Functional Medicine and was one of the original teachers of Functional Medicine. Originally from the Boston area, Dr. Musnick MD spent 33 years of his career in the Seattle area before moving to Idaho in Jan 2022. He enjoys the great outdoors, mountain biking, skiing, kayaking, weight lifting and pickleball. He has expertise treating a vast array of conditions and he has many specialized treatments that he has trained in and developed a very high level of skill in.

Treatments

Dr Musnick does the following treatments:

Bone Marrow Aspirate injections of joints for Osteoarthritis

EFT Tapping training for stress, Anxiety etc

Frequency Specific Microcurrent (FSM) Note Dr Musnick is one of the most experienced FSM clinicians in the world. This treatment can be used ot treat brain, nervous system, Orthopedic and lung, liver and most internal structures

Genetic Assessment and Interpretation link

Homeopathy (from the French School of Homeopathy)

Low Level Laser treatment LLLT

Neural Therapy

Peri Neural Injections for pain

Prolotherapy Regenerative injections of the Spine and Extremities

PRP Platelet Rich Plasma injections of ligaments, tendons and joints

Pulsed Electromagnetic Field (PEMF)

Scar assessment and treatment

Ultrasound guided injections

Sports Medicine/Orthopedic Medicine

Areas of expertise

All conditions begin with a very comprehensive history and physical examination

Note: Dr. Musnick has 33 years of experience in Sports and Orthopedic Medicine. He does not simply come up with a diagnosis label and one treatment for it. He considers every factor that may be involved and determines every involved tissue, joint, ligament, tendon, muscle, nerve and all other structures. He determines the status of the pain processing system. He determines the state of the tissue and comes up with a very comprehensive treatment plan for any Orthopedic, Sports Medicine condition. His treatment plan may include: supplements, Homeopathy, Frequency Specific Microcurrent, PT, manipulative treatments, and injection therapies (scars, Prolotherapy, PRP, Bone Marrow Aspirate). Dr Musnick can help you to decide all of your options including if you need surgery or if there are non-surgical options.

Osteoarthritis (OA)

Knees, Hips, Ankle, Foot, Neck, low back, Shoulder, Hand, Wrist

Dr Musnick has a unique and integrative approach to OA to support the joint area, the ligaments, the muscles and tendons and the bone to decrease pain, prolong the life of the joint and improve function. Dr Musnick has written a book chapter on this topic in the textbook Metabolic Therapies in Orthopedics. He offers very comprehensive evaluation and treatment options of exercise modification, posture changes, shoe wear changes, supplements, homeopathy, Microcurrent, Prolotherapy, PRP and Bone Marrow Aspirate

Sprains/Injury of Knees, Hips, Ankle, Foot, Neck, low back, Shoulder, Hand, Wrist

Ligament sprains may not fully heal and may need assistance to build more collagen and fibroblasts and joint stability This may initially be done with PT but may need Prolotherapy or PRP injections.

Tendonitis/ Tendinopathy

Dr Musnick offers assessment with Ultrasound and a thorough examination of surrounding joints and muscles. Treatment options address regeneration and range from exercise modification to microcurrent, laser and/or PRP injections. Dr Musnick has written a book chapter on this topic in the textbook Metabolic Therapies in Orthopedics.

Neck/Cervical Spine

Evaluation of neck pain with emphasis on looking for joint hypermobility. Numerous treatment options offered including Prolotherapy if joint stability is needed. Dr Musnick has 26 years of experience with Prolotherapy of the neck.

Muscle Pain, Spasm and Trigger Points

Comprehensive assessment of cause and treatment options with microcurrent, Stain Counter Strain and trigger point injections

Ehlers Danlos(EDS) and Hypermobility Syndromes

Comprehensive diagnosis and integrative treatment including ergonomics, shoe wear, microcurrent, homeopathy and regenerative injections(Prolotherapy, PRP,etc )

Disc and Nerve root injury and Pain

Do you need surgery or are there excellent non-surgical options like Microcurrent, PT etc

Functional Medicine

Dr Musnick has extensive expertise in many conditions that can be treated with Functional Medicine. He has 27 years of experience and 1000s of cases of successful treatment. He was one of the original teachers of Functional Medicine. He has integrated Functional Immunology training(500 plus extra hours) approach into his Functional Medicine which enables him to use this extra training to treat Autoimmune Conditions, Neuropathy, Allergies, Mast Cell Activation, Viral and Post COVID disorders etc.

Brain based conditions and symptoms:

Concussion Dr Musnick developed the world’s first integrative treatment approach to healing Concussion based on the pathophysiology of what goes on in the brain. He does a complete assessment, uses researched food and diet, supplements, exercise, EMF reduction, brain training and Microcurrent to heal the brain. He has a book Chapter in the Book Integrative Neurology

Memory disorders

Cognitive Impairment (Dr Musnick has a comprehensive assessment and treatment program to treat memory and other brain based symptoms as well as early Dementia) He has helped many individuals improve their memory, stop brain fog and improve the sharpness of their brain

Other Brain and Nervous System Based Conditions and Symptoms

Brain Fog

ADD

Parkinson’s Disease, MS

Neuropathy (peripheral and cranial)

POTS Postural Orthostatic Tachycardia

Hormones: Adrenal, Thyroid and Testosterone imbalance including Hashimotos

Insomnia: Sleep Disorders Dr Musnick has been teaching about non medication and medication approaches to insomnia. Remember 6 or less hours of sleep can cause body and brain inflammation. Dr Musnick uses homeopathy, supplements, Tapping, stress management, sleep Hygiene measures to improve sleep as well as medications when needed

Mood Disorders

Depression, Anxiety Medications may not work or may have side effects so Dr Musnick uses supplements, homeopathy, exercise, Tapping etc. to improve these conditions

GI disorders

Fatty Liver: alcohol and non alcoholic

There is an epidemic of this condition and it can progress to Cirrhosis and severe liver damage.

Dr Musnick has a unique liver healing program that involves precise diagnosis and an integrative approach to treatment with dietary changes, supplements including Phosphatidyl Choline, assessment and treatment of leaky gut, FSM microcurrent treatment of the liver to reduce inflammation and fibrosis scarring of the liver.

There may be a reduction of swelling, inflammation and size of an enlarged liver.

SIBO and IBS

especially tough or recurring cases and those with poor motility. Dr Musnick has developed an approach which integrates treating the vagus nerve, the microbiome, uses microcurrent, homeopathy, medication(antibiotic or herbs)

Post COVID, Long COVID including loss of taste and smell link

Dr Musnick has a comprehensive approach to the many manifestations of this condition including loss of taste and smell, problems in the brain, lung, sinus and other organs. He may use supplements, Homeopathy and microcurrent

Cardiovascular disorders including Lipid Cholesterol issues

Complete assessment and integrative treatment options. Supplement options for those that wish to avoid statins.

Energy and Fatigue

A very comprehensive approach evaluating Hormones, mitochondrial ATP, NAD and energy production

Oxalates

Dr Musnick is very familiar with oxalates and a lot oxalate diet

MCAS Mast Cell Activation

Dr Musnick has years of experience evaluating and treating MCAS

*To inquire about being seen by Dr. Musnick, follow this link to the FMI Center For Optimal Health here or call (208) 609-9130.

Heidi Arens, FNP, IFMCP

Heidi Arens 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.

Nadia Kravchuk, DNP, FNP-C

Nadia Kravchuk 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.

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.

Team

Providers

Dr. Mark Holthouse, MD, IFMCP

Dr. Mario Brus, MD

Dr. David Musnick, MD, IFMCP

Dr. R. Lynn Carlson, MD, IFMCP

Michael Sermon, PA-C

Jennifer Paulson, DNP, FNP-BC, APHN-BC, IFMCP

Amy Ray, FNP, IFMCP

Jessica Bennett, CNM, APRN

Elizabeth Hingley, NP-C, IFMCP, CDCES

Gavin Guard, PA-C, CISSN

Kristin Gomes, APRN-CNM

Aaron Dykstra, DNP, FNP-C

Olivia Mangeac, PA-C

Tamra Geryk, FNP-C, IFMCP

Christa Inzer Castillo MSPAS, PA-C, MPH

Janessa Tenney, PA-C, IFMCP

Nadia Kravchuk, DNP, FNP-C

Karen Callagy, PA-C, IFMCP

Kaitlin Cooley, FNP-C

Registered Nurses

Lauren Numedahl, RN

Annie Sparks, RN

Health Coach & Nutritionists

Lois Payne, FMCHC, NBC-HWC

Marianne Green, IFNCP, RD

Kaitlin Cooley, FNP-C

R. Lynn Carlson, M.D., IFMCP

Elizabeth Hingley, NP-C, IFMCP, CDCES

Christa Inzer Castillo MSPAS, PA-C, MPH

Jennifer Paulson, DNP, FNP-BC, APHN-BC, IFMCP

Gavin Guard, PA-C, MPAS, CISSN, Pn1

Allyson Howarth, DNP, FNP-C, WHNP

Kristin Gomes, APRN-CNM

Josiah Smith, PA-C

Stephanie Ritari, PA-C

Dr. David Musnick, MD, IFMCP

Aaron Dykstra, DNP, FNP-C

Lexi Moore, RD

Janessa Tenney, PA-C, IFMCP

Tamra Geryk, FNP-C, IFMCP

Christina Rust, PA-C

Olivia Mangeac, PA-C

Ansley Pugh, FNP-BC

Annie Sparks, RN

Claire Fuller, RN

Lauren Numedahl, RN

Stefanie Magee, PA-C

Heidi Arens, FNP, IFMCP

Jessica Santos, FNP-C, IFMCP

Lois Payne, FMCHC, NBC-HWC

Marianne Green, RD

Michael Sermon, PA-C

Alexis Villaret, MS

Jessica Bennett, Certified Nurse Midwife/APRN

Nadia Kravchuk, DNP, FNP-C

Amy Ray, FNP, IFMCP

Karen Callagy, PA-C, IFMCP

Amber Warren, PA-C, IFMCP

Jennifer Hudson, DO, FACOG

Mario Brus, MD

Mark Holthouse, MD, ABoIM, IFMCP