Our physicians are Board Certified in both Family Medicine and in Integrative and Holistic medicine and are trained in Functional Medicine. Dr. Calihan is a Certified Functional Medicine Practitioner. Our nurse practitioner is also trained in functional medicine, and we have a variety of other providers who offer services in alignment with our philosophy of health and wellness. That philosophy is that optimal health and wellness comes from being in balance in the body, mind, and spirit and that this is best attained through addressing each of the five key areas that contribute to the overall balance: healthful eating, balanced movement, integrative medicine, mindful stress management and interconnected living. These areas are the “stones” in the Five Stones.

Martha Calihan, MD 

Board Certified in Integrative & Holistic Medicine as well as Family Medicine, Certified Functional Medicine physician Dr. Calihan brings decades of experience to her work with patients, whom she helps achieve optimal health and wellness through a variety of techniques.

Dr. Calihan has spent many years studying and obtaining credentials in holistic, functional, and integrative medicine. Her practice has been awarded the Best of Loudoun prize for alternative medicine each year since 2007.

Dr. Calihan graduated from Smith College in Northampton, Massachusetts, before obtaining her medical degree from Georgetown University Medical School in Georgetown, Washington, DC.

Dr. Calihan trained and precepted at the Center for Mind-Body Medicine in Washington, DC, and she also trained in acupuncture with Dr. Joseph Helms at the David Geffen School of Medicine at UCLA.


In 2000, Dr. Calihan earned her board-certification in Holistic Medicine, and in 2014 became a member of the first class of Certified Functional Medicine Physicians through the Institute of Functional Medicine.


Dr. Calihan was a founding owner and former medical director at Loudoun Medical Group, one of the largest multi-specialty physician practices in the mid-Atlantic region. She was also their Board Chair from 2000 to 2005.

Dr. Calihan specializes in the treatment of chronic, complex conditions, including autoimmune disease, thyroid and hormonal imbalances, biotoxin illness, chronic fatigue, and fibromyalgia. Using the Functional medicine approach, she searches for the cause of a condition and then works to help rebalance the system. 


Visit Dr. Calihan for compassionate, comprehensive health care with a personal touch. She’s currently welcoming new patients.

Jacki Meinhardt, FNP

Jacki Meinhardt is a Board Certified Family Nurse Practitioner (FNP) committed to the health and wellness of all patients. Recognizing the unique needs of each individual, Jacki emphasizes active patient engagement, proven medical advancements, critical thinking, and patient education to achieve optimum and sustainable results. 


Jacki specializes in Innate Immune System Dysfunction and Metabolic Medicine. Certified by Dr. Ritchie Shoemaker in the diagnosis and treatment of Chronic Inflammatory Response Syndrome (CIRS) and a Diplomat with the International Society for Environmentally Acquired Illness (ISEAI), Jacki partners with international experts to provide care for the whole patient and their families. With a robust research agenda including Lyme and tick-borne vectors, innate immune system dysfunction, mitochondrial medicine, and mild cognitive impairment, Jacki is committed to providing cutting edge therapies to address the root cause of illness. 

Jacki graduated with a Bachelor in Nursing from Villanova University, a Master in Nursing/FNP from Georgetown University, and a Master in Integrative Medicine from George Washington University.  She is currently enrolled at Georgetown University in a Doctor of Nursing Practice in Translational Medicine with her research focus on biotoxin exposure, mild cognitive impairment, and early diagnosis of dementia. 


In addition to general integrative medicine services, Jacki’s focus at Five Stone Wellness will center on CIRS, Lyme, and tick-borne illnesses, chronic fatigue, chronic pain, hormone management, detoxification, and auto-immune diseases.

Irina Nikitina, ANP

Irina Nikitina completed her Adult Nurse Practitioner degree in 2007 through the George Washington University and George Mason collaborative program. She received additional advanced training while working with leading Lyme and Chronic Fatigue Syndrome experts resulting in over two decades of extensive experience in the treatment of various chronic disorders including tick borne infections, Fibromyalgia, Chronic Fatigue and Digestive Imbalances. Irina has developed a holistic, systems approach to providing compassionate, individualized care to even the most complicated of her patients.

Lara Lattman, MS, CNS, LDN

Lara is a Certified Nutrition Specialist and Licensed Dietition-Nutritionist. Working from the ground up, Lara focuses on helping her clients achieve a well balanced, nourishing way of eating. She uses food as medicine, and when necessary adds in professional grade supplements tailored to each individual’s needs. Lara also guides her clients toward a more balanced way of living, incorporating movement and rest, which along with good nutrition are the building blocks of a healthy lifestyle.

Lara graduated in 2014 from Maryland University of Integrative Health with her Master’s of Nutrition and Integrative Health and has been working in the clinical setting every since. She is a Licensed Dietitian-Nutritionist by the state of Maryland. Before finding her path in wellness, Lara graduated from University of Massachusetts with a BA in Classics.

Amy Bridenstine, LPN

Amy is our LPN. Originally from Wisconsin, she moved to Virginia with her husband in 2011. She has been working in healthcare since 1996, starting as a certified nursing assistant in a skilled nursing facility. She enjoyed it so much, she decided to further her education at Milwaukee Area Technical College to become a Licensed Practical Nurse. Previously she has worked in family practice and skilled nursing facility. In her spare time, she loves to spend time with her family, and read.

Yolanda Rook

Yolanda manages our front desk, welcoming everyone who walks through our doors with a high level of care and concern. She is also administrative assistant and brings her creative touch to our web newsletter. A native Washingtonian, Yolanda studied design at the Corcoran School of art and completed a BA in Art History at George Mason University. She was Art Director of SCIENCE magazine, the journal of the American Association for the Advancement of Science, where she helped redesign the publication and worked on the publication’s first Human Genome chart. After several moves that took her family to Massachusetts, Colorado and New Jersey, she returned to the Washington area. She worked at the Muscular Dystrophy Association and at a Reston chiropractic office before joining IFMC.

Angie Rexrode

Angie is originally from England and came to the US as a child.  She brings a life long passion for health and wellness to the front desk.  Previously a personal trainer and pilates instructor, she has also worked at 2 physical therapy clinics as both a technician and a front desk receptionist.  Some of her favorite things are watching her son play lacrosse for Rutgers University, hiking with her daughter and dogs, practicing yoga and reading.

Louise Six

Louise provides IFMC with a unique set of concierge skills; whether following-up with patient call-backs, front desk needs and behind-the-scenes support, she brings a great warmth to all she touches. With a compassionate prior career in nursing, Louise has a great perspective in providing care and comfort. She has previously worked at a boarding school, in an orthopedics office and another holistic medical office. Louise embraces the holistic lifestyle and strives to represent a healthy approach to life, mind and body. She brings an earnestness to the office that is refreshing and makes us all rethink perspective and attitudes and see things fresh.

Brian Fillman

A nationally certified massage therapist who specializes in identifying and correcting dysfunction within the body of each client. He has been working with energy and the healing arts through massage and bodywork since 1994.


Brian blends his knowledge of human anatomy and informed intuition to address client needs. He employs several bodywork techniques that range from Swedish and deep tissue massage to myofascial, craniosacral and Bowen techniques. These techniques and his deep knowledge of energy work and personal training offer clients a unique understanding and skillset for their own healing and personal growth. Brian’s private practice, Body Energetics, has been a part of IFMC since 2008.

Vanessa Lindgren, CHT

A Certified Hypnotist since 1994, Vanessa brings twenty-plus years of licensed experience, skill, and wisdom in helping and guiding her patients. She actually started hypnotizing friends at school at the age of fourteen.


Trained in Neuro Linguistic Programming (NLP) and Ericksonian metaphoric techniques, Vanessa keeps up to date with any new studies on the subject of hypnosis. She is a member of The National Guild of Hypnotists, and writes articles, lectures and creates new techniques of her own on a regular basis.


Vanessa works alongside medical doctors, psychiatrists, psychologists, and dentists and is a firm believer in collaborating with any and all professionals if she feels it will help her clients. At the Integrative Functional Medicine Center, she often works with patients whom Dr. Calihan feels would benefit greatly from hypnosis and working at the subconscious level.

Ann Thomas, MA, E-RYT 500

Ann has been teaching yoga and meditation at the Center since it’s inception in 2008. She offers group classes and one-on-one sessions in mindful stress management, yoga, meditation, and Reiki to support patients in their healing process and restore balance in mind, body, and spirit.


Her teaching experience extends over 25 years. She is certified in the Iyengar method of yoga instruction which is a classic hatha yoga style. It emphasizes awareness of movement, alignment, breath, and therapeutic techniques. She has studied several times at the Iyengar Institute in India, and has additional training in Integrative Yoga Therapy, and Relax & Renew® restorative yoga. She is also a Reiki Level III practitioner.


Ann has a master’s degree in Community Health Promotion and Education and has focused her work on the benefits of yoga and meditation to address stress-related illness since 1992. She was a biofeedback and yoga therapist, and health educator at Georgetown University Medical Center. She then earned a graduate certificate in theology, served as a hospital chaplain and is supportive of the role faith can play in healthcare. She is honored to be part of the Five Stones Center, and to walk with others on the journey toward wholeness in mind, body, and spirit, through every stage of life.

Christoper Voysey

Christopher designs and implements individualized functional exercise programs.

He has been a Personal Trainer for 12 years including six in management roles. His love of fitness began at age 14. A skinny kid all his life, he wanted to find a way to add muscle so he could join the wrestling team, which led to weight lifting. Almost immediately, strength training turned from a hobby to a passion that would eventually become a career. Christopher attended Elon University where he earned a Bachelor of Science Degree in Exercise Physiology, and is certified by the National Strength and Conditioning Association and National Academy of Sports Medicine.


Conditions & Services

Michelle McGregor, DPT

Michelle offers 15 years of clinical experience as a Doctor of Physical Therapy with expertise in movement related disorders.  She utilizes the principles pf the Select Functional Movement Assessment (SFMA) which focuses on the function of the entire musculoskeletal system when addressing more specific symptoms areas.  Michelle is also certified in dry needling.

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Five Stones Healing Arts & Wellness Center, Leesburg, VA

Phone (appointments): 703-669-6118 | Phone (general inquiries): (703) 669-6118

Address: 116-Q Edwards Ferry Rd NE, Leesburg, VA 20176