Integrative medicine
at Flourish Integrative Medicine & Primary care
Whole-person care that listens deeply, looks for root causes, and supports long-term healing.
At Flourish Marin, integrative medicine blends evidence-based conventional care with functional and naturopathic approaches to support the body as a whole. Rather than focusing solely on symptoms, we take time to understand your full story—your health history, lifestyle, stressors, and goals—so we can create a thoughtful, personalized path forward.
Our integrative care model is collaborative, unhurried, and grounded in partnership. It is designed for people who want more clarity, deeper answers, and care that feels supportive and empowering.
What We Treat
Integrative medicine is especially helpful for patients experiencing chronic or complex concerns, including:
Fatigue and low energy
Hormone changes and midlife transitions
Digestive concerns
Immune imbalance
Chronic inflammation
Stress-related or lifestyle-driven health patterns
Our goal is not quick fixes, but sustainable improvement and long-term wellness.
Meet the Team
Dr. Hillary Fredrickson, ND
Naturopathic Doctor | Founder
Dr. Hillary Fredrickson is a naturopathic physician with over two decades of clinical experience. Trained at Bastyr University, she has worked with thousands of patients seeking deeper answers, holistic solutions, and compassionate care.
She brings a whole-person approach to integrative medicine and partners closely with patients to create grounded, sustainable paths toward balance and vitality.
Jennifer Nathanson, MSN, NP-BC
Nurse Practitioner | Functional & Integrative Medicine
Jennifer Nathanson is a board-certified nurse practitioner with over 23 years of healthcare experience and advanced training in functional and integrative medicine. She works with patients navigating chronic symptoms such as fatigue, hormone changes, digestive concerns, immune imbalance, and inflammation.
Jennifer is known for her grounded, compassionate presence and collaborative approach, creating clear, step-by-step plans that focus on root causes, realistic next steps, and long-term healing.
How we work with you
Your care begins with an initial 60-minute visit with Hillary Fredrickson ND, allowing time to take a comprehensive medical history and understand your health goals. From there, we may recommend lab work or specialized testing, such as:
Hormone testing
Food sensitivity or allergy testing
Lyme and co-infection testing
Mold and mycotoxin assessment
Treatment plans are personalized and may include a combination of:
Nutritional and lifestyle guidance
Targeted and individualized supplement plan
Herbal medicine
Hormone support
Conventional medications, when appropriate
Follow-up visits (30–45 minutes) are scheduled to review results, track progress, and refine your plan with ongoing support from Dr. Hillary and our medical providers.
Insurance & Billing
Our practice uses a direct pay model for complete billing predictability and transparency.
Superbills are provided for all visits, allowing patients to seek potential out-of-network reimbursement from their insurance plans.
FSA/HSA Cards are accepted for supplements and other qualifying services.
Schedule an Appointment
If you’re looking for integrative care that prioritizes listening, partnership, and whole-person healing, we invite you to schedule a visit.
For new patient inquiries please call 415-569-3990, For established patients call our office or book your appointment online.
We look forward to supporting your path toward balance and vitality.