7 Stages Practitioner Directory

Dr. Davis has a boutique functional and restorative medical practice in the Pittsburgh area. She is board certified in internal medicine and is certified by the Institute for Functional Medicine. She is licensed to practice medicine in Pennsylvania and New York.

Board-certified in Internal Medicine. Fellowship-trained in Integrative Medicine.
Clinical focus on anxiety, depression, PTSD, and chronic complex illness.

Corrine Haselden is a National Board Certified Health & Wellness Coach, Functional Diagnostic Nutrition Practitioner, and Functional Medicine Certified Health Coach specializing in complex, multi-system chronic illness.

Her work integrates Dr. Bruce Hoffman’s Seven Stages of Health and Transformation, applying a systems-based, bioregulatory framework to help individuals restore resilience, rebuild capacity, and move out of prolonged physiological defense. Corrine works with clients facing challenges such as mold-related illness, autonomic dysfunction, post-viral syndromes, and chronic conditions that have not resolved through conventional or fragmented care.

In addition to advanced professional training, Corrine brings direct lived experience navigating complex chronic illness, which informs her depth of pattern recognition, clinical discernment, and practical decision-making. She approaches healing as an active, participatory process—guiding clients to understand and address the biological, environmental, and life-context factors that sustain chronic patterns.

Corrine is also a Certified Integrative Health Coach through Duke Integrative Medicine, and is known for her ability to synthesize complex information, identify meaningful leverage points, and apply correct sequencing so interventions support the body’s capacity for repair rather than overwhelm it.

Functional Medicine Practice with a specialty focus in Dermatology and Complex Chronic Illness.

Lynn Joselyn, PA-C, IFMCP, CFSP™ is a functional medicine clinician and founder of Integrated Spectrum of Health in Durango, Colorado. Lynn partners with individuals experiencing chronic and unresolved symptoms, blending evidence-based medicine with systems biology to identify root causes, calm the nervous system, and create practical, personalized paths toward long-term healing.

Kristy King, MD is a board-certified, fellowship-trained physician specializing in precision women’s health and complex hormone care. Her work is guided by the understanding that physiology functions as an integrated, intelligent whole and that healing emerges when regulation is restored rather than forced.

She uses advanced diagnostics and physiologic bioidentical hormone therapy to identify patterns of dysregulation across hormones, metabolism, detoxification capacity, and nervous system function. Her clinical focus is on restoring rhythm, stability, and resilience through individualized care that honors both objective data and lived experience.

Dr. King’s approach is inspired by Dr. Bruce Hoffman’s 7-Stage model, interpreted through the lens of AREON, a coherence-based paradigm that recognizes female biology, hormonal rhythm, and embodiment as central to healing. In addition to clinical care, she leads physician-guided immersion retreats designed to support deeper physiologic repair through education, environment, and embodied practice.

Contact: support@areon.health

Website: areon.health

I have been a physician in Maryland for 27 years. I am currently in solo practice, seeing adults and children with complex chronic illness.
I am passionate about helping people establish a solid foundation so I can support them in navigating their health journey and moving beyond complex illness, toward optimal health.

My practice addresses chronic illness and trauma recovery with manual and insight therapies that balance the Central Nervous System and empower clients in body, mind and spirit in their healing journey.

Dr. Merlis is an integrative physician who partners with the patient to guide them back to a state of well being and health. She treats all types of conditions including patients who have chronic, complex diseases. She takes a whole person approach and looks for root causes and upstream drivers of disease. Although conventionally trained as a pediatrician, Dr. Merlis sees both children and adults.

I had a typical start in my medical career-I attended big name universities for my undergraduate and medical school training. I completed my internal medicine residency training at Northwestern in Chicago. I joined their faculty in hospital medicine and palliative care. That was my career for 15 years, and I really enjoyed it. However, I started to see that I wanted a different medical career, and wanted a chance to actually address the root causes of why people get sick. This led me to explore functional medicine. At my first conference, I felt like I had gone back to medical school, in the best possible way.

Fast forward-I have now been working with complex illness and symptoms for a number of years. I see many patients with a history of exposure to tickborne infection or environmental toxins. I focus on rebuilding foundations in terms of nervous system health and cellular health to aid people in long-term healing from whatever insults caused their health decline in the first place. I have a particular interest in trying to prevent and reverse cognitive decline when possible.

I am currently focusing on complex chronic illness from a functional medicine perspective. Previously I have done family medicine but found that many of my patients had symptoms not fitting into the usual "boxes" we have created in medicine. I pusued functional medicine training in hopes of being better able to guide patients on their healing journey.

7 Stages® trained Integrative Health Practitioner (IHP2) | Guiding you to understand your body, transform your health, and achieve your true potential!

Dr. Sienna Steckel is a board-certified Emergency Medicine physician with 19 years of clinical experience. Her work evolved beyond conventional medicine through the recognition that many complex and chronic conditions arise from disruptions in regulation, resilience, and biological coherence rather than isolated pathology.

She has pursued extensive training in European biological medicine, neural therapy, environmental and terrain-based medicine, ozone and hyperbaric therapies, mitochondrial and circadian biology, peptides and bioregulators, as well as advanced work in lymphatic and fascial systems. Her clinical focus is on identifying and addressing interference fields, autonomic imbalance, inflammatory and toxic burdens, and other barriers to healing.

Through her clinical space, AWARE•HOUSE, Dr. Steckel works collaboratively with a multidisciplinary team specializing in energy psychology, family constellation work, interpersonal neurobiology, belief-structure assessment, and nervous system regulation.