PeakMD Health is a physician-led longevity and precision medicine clinic in Sisters, Oregon, founded by Dr. Siobhan Gray, MD. The practice pairs advanced diagnostics with deeply personalized care to help patients extend not just their lifespan but their healthspan — the years lived in genuine strength, clarity, and purpose. Dr. Gray brings an unusual combination of board certifications in Emergency Medicine and Obesity Medicine, along with a proprietary care framework that integrates longevity science, metabolic medicine, and lifestyle optimization into a single cohesive model.

About the Physician

Dr. Gray is board-certified in both Emergency Medicine and Obesity Medicine — a combination that gives her unusual range across acute care, metabolic dysfunction, and long-term health optimization. She developed The North Framework™, a proprietary four-direction model organizing health into Purpose and Alignment (North), Body and Vitality (South), Mind and Presence (East), and Connection and Belonging (West). This framework guides every care plan at PeakMD and ensures interventions address the whole person rather than isolated biomarkers. Dr. Gray also founded Daybreak Recovery Spa, which operates alongside the clinic to integrate restorative therapies into the longevity medicine model.

Services Offered

• VO₂ Max and Metabolic Testing (PNOÉ Technology) — Gold-standard cardiovascular fitness and resting metabolic rate assessment using PNOÉ, one of the most accurate metabolic analysis platforms available. Results drive personalized exercise and nutrition targets.
• Advanced Longevity Biomarkers — Comprehensive lab panels including ApoB, Lp(a), fasting insulin, inflammatory markers, hormone panels, and genetic analysis — the foundation of individualized longevity planning.
• PeakMD Rebuild Pathways — Six-month structured programs targeting longevity, hormone health, menopause, body recomposition, and peak performance. Each pathway combines diagnostics, physician-directed interventions, and ongoing monitoring.
• Menopause and Hormone Care — Individualized hormone optimization for perimenopause and menopause, using advanced testing and evidence-based protocols to address energy, body composition, mood, and cognitive function.
• Weight Loss and Obesity Medicine — Physician-supervised weight loss addressing the metabolic, hormonal, and genetic drivers of weight gain — including GLP-1 medications when appropriate, pre- and post-bariatric care, and behavioral support.
• Longevity and Stewardship Memberships — Ongoing physician partnership for quarterly longevity reassessments, wearable data review, and body composition tracking. Longevity Membership starts at $149/month.
• One-Time Precision Consultation — A focused entry point for patients not yet ready for full membership — a comprehensive physician evaluation with personalized recommendations.

What to Expect

PeakMD Health does not accept insurance; HSA and FSA funds are accepted. New patients typically begin with a Precision Consultation. The clinic is located at 615 N. Arrow Leaf Trail, Sisters, OR 97759. Reach Dr. Gray at (541) 904-4565 or Siobhan@peakmdhealth.com. Daybreak Recovery Spa services are available on-site and by membership for members seeking integrated restorative care.