Functional Medicine
Our skilled practitioners offer functional medicine that focuses on identifying and addressing the root causes of imbalance rather than simply managing symptoms. By supporting the body’s innate capacity for healing, functional medicine offers a thoughtful pathway toward sustainable health, vitality, and long-term well-being.
Dr. Kelsey Stang
Dr. Kelsey Stang is a licensed naturopathic doctor (ND) specializing in women’s health through all stages of life - preconception, motherhood, and menopause. With a deep belief that true healing starts at the root, Dr. Kelsey blends functional lab testing, personalized nutrition, and holistic care to support long lasting wellness.
Her approach is both science informed and heart centered, empowering women to reclaim their vitality, balance hormones, improve digestion, and reconnect with their bodies. Dr. Kelsey is trained in Internal Pelvic Therapy, Arvigo Maya Abdominal Massage and Craniosacral Therapy and often incorporates these body-tending practices into care for her patients. She is honored to bring her practice to this integrative space, where community, movement, and healing come together.
Conditions Commonly Treated:
Irregular or Painful Periods
Pelvic Pain
Hot Flashes and Night Sweats
Fertility Concerns
Adrenal and Thyroid Imbalances
Bloating or Other Gut Symptoms
Anxiety, Depression, Or Irritability
Brain Fog
Sleep Disturbances
Weight Changes
Skin Conditions
Rena Mattingly
Adult Gerontology Nurse Practitioner
She/Her
Rena Mattingly, MSN, APRN, AGNP-C is a board-certified Adult Gerontology Nurse Practitioner specializing in hormone and metabolic health for women and men in midlife. With over 16 years of experience and a varied clinical background, she takes a root-cause approach to help patients restore balance, energy, and long-term vitality.
Conditions Commonly Addressed:
Hormonal imbalances in women and men
Perimenopause and menopause symptoms
Fatigue and low energy
Weight gain and metabolic resistance
Mood changes, brain fog, anxiety, or low motivation
Low libido
Thyroid dysfunction and suboptimal thyroid labs
Gut symptoms such as bloating or constipation
Insulin resistance and blood sugar dysregulation
Rena founded Health in Her Hands to move beyond symptom-driven medicine and offer truly personalized care. Her approach blends advanced functional lab testing with bioidentical hormone replacement therapy, thyroid optimization, and gut health strategies to address the underlying drivers of hormonal and metabolic dysfunction.
She is a member of The North American Menopause Society (NAMS) and is deeply committed to evidence-based, individualized menopause care. Building on her work in women’s health, Rena will launch Powerhouse Men’s Health in early 2026—bringing the same data-driven, personalized approach to men seeking optimized health, performance, and longevity.
