Gordon Medical Associates

Gordon Medical Associates GMA is the Premier West Coast clinic for treating Lyme Disease, tick-borne, and environmentally acquired illnesses.

Our expert team offers advanced care for MCAS, mold illness, autoimmune disorders, & CFS, helping patients regain their health and vitality At Gordon Medical Associates, we have decades of professional training and expertise, and we also continue to teach, write, and perform ongoing research. Our patients come not only from the North Bay, and the greater San Francisco area, but the entire country,

and around the globe for individualized help with a wide range of problems, from chronic pain and hormone balancing to chronic fatigue and Lyme disease. We recognize you may feel your health concerns have been unheard in the past, but to us, your health presents real, complex, interrelated symptoms. Here you’ll find a wealth of information and resources to expand your understanding of how we assess and treat each individual patient, and the tools we use. A variety of medical papers authored by our clinicians provide comprehensive information for interested patients and professional colleagues. Find out more about us and our services: https://linktr.ee/gordonmedical

06/17/2026

Removing yourself from a mold environment is a critical first step, but for many patients it is not the end of the exposure. Mold can colonize internally, taking up residence in the sinuses, gut, ears, skin, and lungs, meaning the immune system continues to be provoked from within even after the external source is gone.⁠
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This is why some patients see only partial improvement after home remediation or relocation. The body is no longer being bombarded from outside, but internal colonization keeps the immune and inflammatory burden elevated. Addressing mold inside the body is a distinct and necessary phase of treatment that follows environmental removal.⁠
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Follow and for more clinical insights on mold illness, MCAS, and complex chronic illness.

This is one of the reasons MCAS is so frequently missed. Symptoms appear in one part of the body while the source of act...
06/16/2026

This is one of the reasons MCAS is so frequently missed. Symptoms appear in one part of the body while the source of activation is somewhere else entirely. Mast cells are present in every tissue, and when they release inflammatory mediators like histamine, those signals travel and bind to receptors throughout the body, producing symptoms that seem unrelated and unpredictable.⁠
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Joint pain, brain fog, and cardiovascular symptoms in an MCAS patient may have nothing to do with those systems directly. Tracing the source requires a clinician who understands how mast cell signaling moves through the body.⁠
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Follow and for more clinical insights on MCAS and complex chronic illness.

06/15/2026

Mold exposure and Mast Cell Activation Syndrome are closely linked, and treating one without addressing the other is one of the most common reasons patients plateau in treatment.⁠
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Mycotoxins are neurotoxic and place continuous stress on an already dysregulated immune system. When a patient remains in an active mold environment, whether at home or at work, the mast cell burden does not lift regardless of what protocols are in place. The source of immune provocation has to be removed before meaningful progress can be made.⁠
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If MCAS treatment is producing only partial results, the environment needs to be part of the clinical conversation.⁠
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Follow and for more clinical insights on MCAS, mold illness, and complex chronic illness.

Jenny Nelson, ND, is a licensed naturopathic physician who believes doctors can empower patients to heal through an educ...
06/12/2026

Jenny Nelson, ND, is a licensed naturopathic physician who believes doctors can empower patients to heal through an educational, supportive relationship. Her holistic approach values not only the physical, but the mental, emotional, and spiritual aspects of health.⁠
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Dr. Nelson earned her Doctorate of Naturopathic Medicine from Bastyr University in 2012, where she was trained in both conventional and alternative medicine. She employs a variety of therapeutics, including botanical medicine, nutritional modifications, physical medicine, homeopathy, and detoxification. As a listener, counselor, and investigator, she spends quality time gathering information, conducting lab tests, and working with other practitioners who are part of the patient's care team.⁠
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Before her medical journey, Dr. Nelson earned her BA in International Relations and MA in Sociology from Stanford University. After working in marketing and as part of the PBS Newshour editorial team, she spent two years backpacking the world, witnessing how deeply health is integrated with lifestyle, relationships, and environment.⁠
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Her areas of practice include complex chronic illness, nutritional and dietary support, and homeopathy.⁠
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Comment DISCOVERY to book your complimentary Discovery Call to speak with a New Patient Coordinator and learn more about working with Gordon Medical Associates.

06/10/2026

Mast Cell Activation Syndrome is not a localized problem. When mast cells are in a state of persistent activation, the resulting inflammation and oxidative stress create a systemic environment in which the immune system loses its ability to regulate itself accurately.⁠
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This is why MCAS patients so often present with symptoms that cross multiple systems simultaneously, and why treating MCAS in isolation rarely resolves the full clinical picture. The immune dysregulation it creates has downstream effects on everything from neurological function to hormonal balance to gut integrity.⁠
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Follow and for more clinical insights on MCAS and complex chronic illness.

Your lymphatic system plays a vital role in circulation and immune balance, but it doesn’t have a pump like the heart.⁠⁠...
06/09/2026

Your lymphatic system plays a vital role in circulation and immune balance, but it doesn’t have a pump like the heart.⁠
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Lymph moves through the body through muscle movement, breathing, hydration, and changes in pressure within the body. Gentle daily practices like walking, dry brushing, contrast showers, rebounding, and deep breathing can help support healthy lymphatic flow.⁠
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These simple techniques are safe to try at home and may leave you feeling refreshed and more energized.⁠
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Save this post so you can come back to these lymph-boosting tips anytime.

06/08/2026

Mast cells release over a thousand different chemicals, and standard lab panels capture only a fraction of them. Histamine, tryptase, and chromogranin A are the most commonly tested markers, but they require the patient to be in active flare at the exact moment of the draw to register meaningfully. In clinical practice, that window is rarely caught.⁠
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This is why a clinical diagnosis is the most reliable tool commonly available. The patient's symptom pattern, their reactivity profile, and their response to MCAS-targeted treatment tell a more complete story than any single lab value ordered from the standard laboratory. ⁠
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Follow and for more clinical insights on MCAS and complex chronic illness.

⭐️⭐️⭐️⭐️⭐️⁠“Dr. Eric Gordon is the most brilliant and compassionate doctor I’ve seen in my 14-year search for answers. H...
06/05/2026

⭐️⭐️⭐️⭐️⭐️⁠
“Dr. Eric Gordon is the most brilliant and compassionate doctor I’ve seen in my 14-year search for answers. He has helped unravel every layer of my complex illness, from Lyme and co-infections to mast cell issues, chronic fatigue, and more.” — Fine R., Google Business⁠
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Stories like Fine’s reflect what so many patients experience when navigating complex illness. Years of searching, countless appointments, and symptoms dismissed as “normal.” Having a physician who can see the bigger picture and bring clarity to complexity can change the trajectory of care.⁠
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Comment DISCOVERY and we’ll DM you details on how to book your complimentary Discovery Call.

06/04/2026

The overlap between Long COVID and Mast Cell Activation Syndrome is appearing consistently in our clinical practice, and the pattern is significant enough that MCAS needs to be part of our evaluation for any patient who has significant health issues from 3 months to years after an initial COVID infection.⁠
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What is less clear is why the association is so high. One area being explored is whether there is an underlying genetic component to how certain immune systems respond to viral triggers, making some individuals more predisposed to mast cell dysregulation following infection. The clinical picture of Long COVID, with its unpredictable, multi-system symptom burden, maps closely onto what is seen in MCAS, and addressing mast cell activation may be a critical piece of moving these patients forward.⁠
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Follow and for more clinical insights on Long COVID, MCAS, and complex chronic illness.

Address

361 Third Street, Suite J
San Rafael, CA
94901

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+14157576100

Website

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