About Us

Dr. Heather Sandison ND

Dr. Heather Sandison is the founder of North County Natural Medicine and the founder of Marama.

Dr. Sandison specializes in neurocognitive medicine and neurohacking. She has been trained to specifically address imbalances that affect the brain including Autism, ADD/ADHD, depression, anxiety and Alzheimer’s. She has trained with Dr. Dale Bredesen MD, Dr. Neil Nathan, MD, Dr. Bill Walsh, PhD and Dr. Ritchie Shoemaker, MD in addition to regularly attending and speaking at integrative medicine conferences throughout the year.

Her healing philosophy centers around treating the cause of imbalances in the body including:

  • Toxins
  • Nutrients
  • Stress
  • Structure
  • Infections

She believes in the power of the body to heal itself. Dr. Sandison’s passion is to guide and support patients as they co-create strong foundations for optimal health through sustainable lifestyle changes and the best medical interventions to support balance in the body.

Dr. Sandison is dedicated to learning all there is to know about brain health and considers her amazing patients at NCNM and residents at Marama some of her very best teachers. Dr. Sandison has been awarded a research grant to study the effects of individualized interventions on patients struggling with cognitive decline at NCNM.

She earned her Naturopathic Doctorate at Bastyr University in Seattle, WA. She currently serves on the medical advisory board of Neurohacker Collective, and is a regular host of the Collective Insights podcast.

Dr. Sandison is available for appointments Mon-Thursday weekly.

Read about our Origin and Mission here.

Dr Heather Sandison ND

Dr. Miranda Naylor, DO, IFMCP

Dr. Miranda Naylor is an Osteopathic Doctor, board-certified in Family Medicine and Functional Medicine. She is passionate about partnering with her patients to identify the root causes of symptoms and restore optimal health. She treats the whole person — addressing not only physical, but also emotional, spiritual, energetic, environmental, and community factors. She believes in supporting the body’s innate healing capacity by nourishing each individual’s needs and removing barriers such as toxins, infections, chronic stress, and structural imbalances. She blends evidence-based science with traditional wisdom to customize a treatment plan for each patient, including nutrition, lifestyle, and nutraceutical supplementation.

With a background in primary care, Dr. Naylor has years of experience in treating the whole family, from newborn to elder. While she no longer serves as a primary care physician, she loves to maintain the same continuity of care, treating families through every stage of life, preventing disease, and maintaining health. She specializes in women’s health, fertility, pregnancy, and motherhood, as well as graceful transition into menopause. She also treats thyroid and adrenal balance, digestive health, autoimmunity, and mitochondrial health. In addition to Functional Medicine consultations, she offers Osteopathic Manipulative Treatment and Craniosacral Therapy.

Dr. Naylor earned her medical degree from Western University, College of Osteopathic Medicine of the Pacific. She completed residency at Northridge Family Medicine Residency Program, David Geffen School of Medicine at UCLA. She is certified through the Institute for Functional Medicine and has also trained with Dr. Kalish of the Kalish Institute of Functional Medicine.

Dr. Miranda Naylor DO DR

Dr. Manna Semby, ND

Dr. Manna Semby, ND, feels privileged to have been guided to becoming a naturopathic doctor. In her previous life, she was a CPA and worked on Wall St for 12 years. During this time she was a faithful believer in conventional medicine. A series of unfortunate experiences with her children’s health and the lack of solutions, support and compassion from the pediatrician convinced her that she needed to look elsewhere for answers. Within a few short years, Dr. Semby discovered homeopathic, naturopathic and functional medicine. She switched gears from finance to medicine, taking 3 years to study homeopathy and then 2 years to complete science prerequisites to attend medical school. She graduated from Bastyr University in San Diego, CA, with a doctorate in Naturopathic medicine. Today, she is a passionate believer in the naturopathic therapeutic order which establishes the primacy of the foundations of health: individually optimized diet, exercise, thinking, living, working and relating. She thrives on meaningful dialog and relationships with patients, clinicians and staff at Solcere.

Dr. Semby relishes listening to and connecting with patients at the deepest level. When the patient and doctor are in deep sync, a beautiful triune entanglement in the relationship emerges which (borrowing from homeopathy research by Milgrom and Hankey) creates quantum coherence and is instrumental in devising the right combination of therapeutics that will bring the patient back into a state of homeodynamism (“ability to dynamically self-organize”). With each patient, Dr. Semby considers the latest empirical evidence before devising a treatment plan. Her interests include complex chronic illness such as mold and lyme, reversal of cognitive decline, cardiometabolic health, endocrine (hormone) issues, and integrative oncology. She is also passionate about providing care in group/community settings and working with corporate leaders and HR to devise optimal health plans for employees. She is trained in functional medicine and is RECODE 2.0 certified with Dr. Dale Bredesen protocol to reverse Alzheimer’s. She has been trained by Dr. Iris Bell, Dr. Joe Pizzorno, Dr. Kara Fitzgerald and Dr. Leigh Erin Connealy. She is currently being mentored by Dr. Neil Nathan and Dr. Paul Anderson.

Dr. Manna Semby, ND

Dr. Valencia Porter, MD MPH FACN

Dr. Valencia Porter, MD MPH FACN Chopra Certified Perfect Health Instructor
Dr. Valencia Porter is a leader in Integrative, Preventive, and Environmental Medicine, combining ancient wisdom traditions such as Ayurvedic Medicine with modern science. Double-Board Certified in General Preventive Medicine and Integrative Medicine, she provides integrative medical consultations and teaches health professionals and the community how to achieve total mind, body, spirit health.

She passionately advocates for real solutions to the global problems of climate change and pollution, knowing that personal and planetary health are intricately linked. Dr. Porter shares her extensive knowledge about the environment and its role in our health and wellbeing through her recent book, “Resilient Health: How to Thrive in Our Toxic World,” a handbook for the toxic age based on her research, clinical experience guiding patients through detoxification programs and personalized healing. Her integrative practice combines nutritional medicine, herbal medicine, mind-body medicine, energy medicine, environmental medicine, Ayurveda, functional medicine and peak performance methods to create optimal and resilient health.

Dr. Valencia Porter, MD MPH FACN


Julie Rourke

Julie Rourke, Phlebotomist and Naturopathic Assistant, is a San Diego native. She attended Arizona State University with a BS in Human Development. With her interest in health and athletics, she played collegiate soccer while at ASU. Julie has been a Phlebotomist for over a year working primarily at the Marine Corps base. Julie is now studying for her Bachelor of Science in Nursing while continuing to grow at NCNM.

True to her San Diego roots, she loves the water and spending free time at the beach. Working out and maintaining a healthy lifestyle is a top priority for Julie, and shines through in all she does.

Julie Rourke

Nadia Ramirez

Nadia Ramirez was born and raised next door in Carlsbad, California. She has her Bachelor of Science in Kinesiology from Sonoma State University. During undergraduate studies, Nadia developed her interest in fitness and physical health, and received her NASM Certification to train clients while carrying a full course load. After graduating, Nadia worked as a Physical Therapy trainer at a boutique physical therapy center while still continuing her education and exploring her many different interests in health care.

She was led to North County Natural Medicine due to her own personal experience and desire to understand how we can heal deeply rooted wounds through developing and nurturing our own body, mind and soul. She came across NCNM’s philosophy and it resonated deeply with her. Nadia loves learning and being part of a community that promotes such practices. Nadia spends her free time in nature and being active. She loves to climb, run and surf. Nadia is fascinated by each individual’s capabilities and the power our perception has to shape our experiences. She hopes to help others see and experience the beauty life has to offer.

Nadia Ramirez
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