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At our Los Gatos, Mountain View, and Los Altos locations, we aim to deliver comprehensive services tailored to your specific needs, providing personalized, holistic care that enriches your overall wellness experience. Our commitment remains steadfast as we endeavor to enhance all aspects of health, closing any care gaps and ensuring that every service you require is conveniently accessible in one location. At Avita MD, we pledge to be your advocate, offering cutting-edge technology for diagnosing and treating your conditions. As an independent, physician-owned practice, we’re free to fight for what’s best for you, not what’s convenient for a system.
At Avita MD, we don’t guess — we measure. Our precision medicine programs use your unique biological data to uncover the root causes behind symptoms, fatigue, hormonal imbalances, and chronic conditions. This isn’t one-size-fits-all care. It’s healthcare designed specifically for you. Using advanced diagnostics like genetic testing, hormone and cortisol profiling, microbiome mapping, and metabolic panels, we build a clear picture of how your body functions and where it needs support. From there, our providers create personalized care plans that target the underlying drivers of imbalance, not just the surface-level symptoms. This approach is ideal for anyone looking to optimize performance, prevent future illness, or finally get clarity on stubborn health issues. Whether you’re dealing with low energy, weight gain, gut issues, or brain fog, our data-driven protocols bring real answers within reach.
Internal Medicine | Obesity Medicine Dr. Patricia Sitnitsky, double-certified by the American Board of Internal Medicine and the American Board of Obesity Medicine, is a physician trained at Stanford University. With more than 20 years of experience, Dr. Sitnitsky built Avita MD to be more than a clinic — she built it to be an advocate, a guide, and a medical home for those who want clarity and control over their health. Her approach blends deep clinical expertise with a passion for functional and preventive medicine. From advanced diagnostics to data-driven wellness plans, Dr. Sitnitsky has shaped a practice that prioritizes individual needs over system constraints.


At Avita MD, exceptional care starts with an exceptional team. Led by Dr. Patricia Sitnitsky, our providers bring decades of experience across primary care, preventive medicine, and functional health. Our team includes highly trained, board-certified physicians and physician assistants.
Together, they share a commitment to advanced diagnostics, personalized treatment, and relentless advocacy, ensuring that no detail in your health journey is overlooked. Every provider at Avita MD is chosen not only for their clinical expertise but also for their ability to connect with patients in a meaningful, compassionate way. Whether you’re here for precision diagnostics, weight management, or long-term condition care, you’ll have a dedicated team on your side, guiding you toward lasting health and vitality.











From weight loss and hormones to gut health and prevention, our most-requested services are designed to treat root causes, not just symptoms. Every offering combines precision diagnostics with personalized, evidence-based care that puts your long-term wellness first.
Medical Examination for Immigration
The green card medical examination is an important step in the immigration process and is required for most green card applicants. Dr. Patricia Sitnitsky is a licensed U.S. Civil Surgeon, which means that she is authorized by the U.S. government to perform the immigration medical exam and has many years of experience to help you avoid common pitfalls in the process. Take this fundamental step toward U.S. citizenship with a compassionate and trustworthy provider, and schedule your appointment with Dr. Patricia Sitnitsky at Avita MD.

Our weight loss program blends the latest clinical research with individualized care. Using tools like GLP-1 medications (including Ozempic, Wegovy, Zepbound, and Mounjaro), we also incorporate genetic testing, hormone panels, dietitian support, and exercise counseling to create safe, sustainable plans. Our approach identifies the real reasons weight won’t budge—like thyroid issues, cortisol imbalances, or metabolic resistance—so we can address them head-on. No gimmicks. Just real results.

Hormonal imbalances can disrupt everything, including sleep, mood, metabolism, and more. At Avita MD, we take a precision-based approach to hormone therapy, using DUTCH testing, bloodwork, and symptom analysis to build a picture of what your body needs. We offer individualized BHRT for both women and men, including pellet therapy and testosterone optimization with proactive prostate monitoring. With Avita, you’ll get answers and a plan that works with your body, not against it.

Your gut affects far more than digestion, playing a central role in immunity, mood, energy, and inflammation. We use advanced diagnostics from Genova and US BioTek to uncover microbiome imbalances, food sensitivities, SIBO, and toxin exposure. Our gut protocols combine evidence-based elimination diets, targeted supplements, and personalized nutrition guidance to help restore balance. Whether you’re dealing with IBS, reflux, bloating, fatigue, or brain fog, our gut care protocols are root-cause medicine for your entire system.

Our heart and metabolic screenings go far beyond the basics. Using advanced lipid panels, genetic testing (via 3x4 Genetics), inflammation markers, and in-house diagnostics, we identify cardiovascular risks long before symptoms appear. From cholesterol to insulin resistance to lipoprotein(a), we screen for what matters and help you access evidence-based medications like Repatha and Vasepa, without delays or confusion. Combined with nutritional and blood pressure support, our preventive approach empowers you to act early and age well.

Sometimes, your body needs a reset, fast. Our IV infusions deliver high-dose nutrients directly into your bloodstream for immediate absorption and impact. Choose from options like the Myers’ Cocktail for energy and immunity, high-dose Vitamin C for antioxidant support, or NAD+ for cellular rejuvenation. We also offer glutathione, hydration therapy, and personalized blends based on your needs and labs. Whether you're recovering from illness, managing stress, or simply optimizing, IV therapy is an efficient, effective way to feel better—without guesswork.


At Avita MD, you get access to treatments and care pathways typically reserved for concierge clinics, without the steep membership fees. Our primary care services go far beyond routine checkups.
We manage complex conditions with precision, using advanced diagnostics, personalized protocols, and direct communication with your care team. Whether you’re navigating chronic illness, optimizing long-term health, or need support between visits, our providers are available when and where you need them. Telehealth appointments offer flexible, secure access to care from anywhere, while our in-house team coordinates referrals, prescriptions, and follow-ups without delays. This is care designed around your life—efficient, elevated, and truly on your side.

At Avita MD, we redefine the primary care experience by blending personalized medical care with state-of-the-art technology. Our team of renowned physicians and skilled medical staff is committed to delivering premium, patient-centered care in a sophisticated environment. We leverage cutting-edge diagnostic tools and advanced medical technologies to ensure you receive the highest standard of care.
Avita MD Health specializes in chronic and acute condition management and is prepared to help patients navigate their clinical journey. Patients with chronic conditions typically require multiple visits each year. These patients often have regimented treatment plans that require frequent adjustments and consistent monitoring by a provider familiar with their condition.
We offer a suite of telehealth primary care services, also available in person, supported by top-of-the-line technology and partnerships. We have an industry-leading team of physicians and support staff who value affordable care and consistent communication. Put short, we are here to make sure you receive the care you need when you need it.
Let Us Monitor Your Health from the Comfort of Your Home
Discover a new era of personalized healthcare with Avita MD. Our cutting-edge remote patient monitoring program seamlessly integrates advanced medical technology and expert care right into your home. With Avita MD, you can easily monitor your health and stay connected with your doctor, all from the comfort of your own space.
