Dr. Rashna K. Staid, MD, FACP
Functional Medicine Physician | Founder | Leader in Root-Cause Healthcare
Dr. Rashna Staid is a board-certified Internal Medicine physician and leader in Functional and Integrative Medicine with over 27 years of clinical experience. She is known for building a thriving, patient-centered medical practice grounded in rigorous clinical thinking, scientific curiosity, and a commitment to identifying the true drivers of illness.
As Founder of Full Spectrum Integrative Medicine, Dr. Staid has created a model of care that moves beyond algorithmic or protocol-based medicine. Her approach prioritizes critical thinking, deep evaluation, and individualized treatment strategies designed to uncover and address root causes of complex health conditions.
Her work integrates conventional Internal Medicine with advanced functional diagnostics, nutrition science, lifestyle medicine, and systems biology to optimize metabolic health, immune function, cognitive performance, and long-term resilience.
Dr. Staid is recognized for combining intellectual rigor with compassionate care, developing a practice environment where patients are truly heard, thoroughly evaluated, and supported through meaningful, measurable health improvement.
Professional Summary
Physician leader and Functional Medicine expert with extensive experience developing innovative clinical programs focused on root-cause analysis and personalized health optimization.
Founder of a thriving integrative medical practice built on the principle that effective care requires thoughtful investigation, clinical insight, and individualized strategy rather than standardized treatment protocols.
Known for the ability to synthesize complex medical data, emerging scientific research, and detailed patient histories to develop targeted interventions that address the underlying drivers of disease.
Experienced in building collaborative care teams that support patients through sustainable lifestyle change, metabolic optimization, and long-term disease prevention.
Leadership and Clinical Innovation
Dr. Staid has developed a distinctive care model at Full Spectrum Integrative Medicine that prioritizes deep listening, analytical thinking, and individualized clinical strategy.
Her practice does not rely on pre-set protocols or formulaic treatment plans. Instead, each patient evaluation is approached as a unique clinical investigation.
Key elements of the Full Spectrum model include:
• Comprehensive systems-based evaluation of each patient’s health history, physiology, and risk factors
• Advanced functional laboratory testing to uncover hidden drivers of disease
• Personalized treatment strategies based on clinical reasoning rather than generalized protocols
• Integration of nutrition science, lifestyle medicine, and targeted supplementation
• Ongoing reassessment and refinement of treatment plans based on patient response
• Emphasis on measurable improvement in biomarkers, function, and quality of life
Dr. Staid has built and leads a highly skilled interdisciplinary team that includes experienced nurses and functional health coaches who support patients in implementing meaningful and sustainable lifestyle changes.
Her practice model reflects a commitment to intellectual rigor, patient partnership, and continuous learning.
Practice Development and Vision
Through strategic leadership and commitment to clinical excellence, Dr. Staid has built Full Spectrum Integrative Medicine into a trusted destination for patients seeking deeper answers to complex health concerns.
The practice emphasizes:
Health optimization rather than symptom suppression
Prevention and early intervention
Restoration of metabolic and immune resilience
Individualized care strategies
High-touch patient support
Thoughtful integration of conventional and functional medicine
With expansion into a new location in Devon, Dr. Staid continues to grow a collaborative care environment designed to meet increasing demand for personalized, root-cause medical care.
Her long-term vision includes continued development of an innovative clinical model that prioritizes patient needs, scientific integrity, and measurable outcomes.
Core Functional Medicine Expertise
Root Cause Medicine
Systems Biology Approach to Chronic Disease
Functional Medicine Diagnostics
Cardiometabolic Optimization
Hormone and Thyroid Disorders
Autoimmune Disease Management
Gut Health and Microbiome Function
Chronic Inflammation
Cognitive and Brain Health
Precision Nutrition Strategies
Lifestyle Medicine
Stress Physiology and Sleep Optimization
Targeted Supplementation Protocols
IV Nutrient Therapy
Preventive and Longevity Medicine
Professional Experience
Full Spectrum Integrative Medicine – Devon, Pennsylvania
Founder and Physician | 2019 – Present
Established a thriving Functional Medicine practice focused on identifying and addressing the root causes of chronic illness through individualized evaluation and treatment.
Developed a clinical model that prioritizes analytical thinking, detailed assessment, and personalized strategy rather than standardized treatment algorithms.
Built and leads a collaborative interdisciplinary team including nurses and functional health coaches dedicated to supporting patients in achieving sustainable lifestyle and metabolic change.
Provides comprehensive care for patients with cardiometabolic dysfunction, autoimmune disease, hormonal imbalance, chronic inflammation, gut health disorders, and cognitive concerns.
Guides clinical strategy, practice development, and ongoing expansion of services in a growing Devon location.
Marcus Institute of Integrative Health – Villanova, Pennsylvania
Physician and Clinical Instructor | 2015 – 2019
Founding physician for Villanova site, developing a consultative Functional Medicine practice within an academic integrative health framework.
Specialized in complex chronic illness, autoimmune disease, hormonal dysregulation, and multi-system conditions using advanced diagnostic tools and individualized care strategies.
Directed IV nutrient therapy programs and contributed to executive health initiatives.
Participated in clinical research development and supplement formulation strategy.
Penn Primary Care and Integrative Medicine – Exton, Pennsylvania
Attending Physician, Internal Medicine | 2005 – 2015
Founded a forward-thinking integrative primary care practice incorporating Functional Medicine principles into preventive medicine, thyroid care, women’s health, and stress-related illness.
Developed referral networks with nutrition specialists and integrative practitioners.
Served as physician advisor for implementation of NextGen and Epic electronic medical record systems.
Marino Center for Progressive Health – Wellesley, Massachusetts
Practice Leader and Attending Physician | 2001 – 2005
Led a multidisciplinary integrative medical practice, overseeing physicians, nurse practitioners, and complementary medicine providers.
Focused on preventive medicine and integration of conventional and evidence-based complementary therapies.
Directed clinical expansion and EMR adoption initiatives.
Wellesley Medical Associates – Wellesley, Massachusetts
Attending Physician, Internal Medicine | 1999 – 2001
Developed a primary care practice delivering comprehensive internal medicine services within managed care systems.
Education, Certification, and Professional Affiliations
Board Certified, American Board of Internal Medicine (ABIM)
Board Certified, American Board of Integrative Medicine (ABOIM)
Board Certified, American Board of Integrative Holistic Medicine (ABIHM)
Doctor of Medicine, SUNY Health Science Center
Bachelor of Science in Nutrition, Cornell University
Residency, Internal Medicine, Lahey Clinic
Fellow, American College of Physicians
Institute for Functional Medicine
American Medical Association
American Society for Laser Medicine and Surgery
American Med Spa Association
Clinical Philosophy
Effective medicine requires curiosity, analytical rigor, and the willingness to look beyond surface symptoms.
Dr. Staid approaches each patient with the understanding that chronic illness is often driven by complex interactions between metabolism, immune regulation, environment, lifestyle, and genetic predisposition.
Her goal is to identify the true drivers of dysfunction and develop targeted strategies that restore physiologic balance and optimize long-term health.
Her work reflects a commitment to individualized care, scientific integrity, and meaningful patient partnership.