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Wellness By The Numbers

Precision Medicine in Los Gatos, Los Altos & Mountain View

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WELCOME TO AVITA MD

YOUR LIFELONG WELLNESS ADVOCATES

At Avita MD, we believe your health deserves more than checklists and rushed appointments. That’s why we’ve built a one-stop medical home that blends world-class diagnostics with warm, personalized care.

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.

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Precision Medicine

The Premier Provider for Biohacking

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.

Dr. Patricia Sitnitsky, M.D.

Internist, Primary Care Doctor, Obesity Specialist

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.

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We’re in This Together

Meet the Team Behind Your Care

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.

Near You. For You.

Our Avita MD Locations

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Los Altos

827 Altos Oaks Drive, Suite 4 Los Altos, CA 94024

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Mountain View

525 South Drive, Suite 211 Mountain View, CA 94040

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Los Gatos

15100 Los Gatos Blvd Ste 4 Los Gatos, CA 95032

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Better Health Starts Here

Featured Health & Wellness Services

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.

Immigration Medical Exam Medical Weight Loss BHRT Gut Protocol Heart & Health IV Therapy

Medical Examination for Immigration

Your Designated USCIS Civil Surgeon

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.

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Backed by Data

Medical Weight Loss with GLP-1s

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.

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On The Level

Bioidentical Hormone Replacement Therapy (BHRT)

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.

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Whole-Body Health

Functional Medicine Gut Protocol

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.

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Get Answers. Stay Ahead.

Heart & Health Screenings

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.

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Fast-Track Your Wellness

IV Infusion Therapy

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.

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Advanced Care

Concierge-Level Whole-Patient Support

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.

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Primary Care & Wellness

Primary Care Appointments

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.

Chronic Medical Conditions

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.

Telehealth Services

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.

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Chronic Care Management

Remote Patient Monitoring

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.

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“The best clinic I’ve ever set foot in…”

Patient Testimonials

“Claire is amazing! She is extremely considerate and attentive, taking the time to listen to all of my concerns. Her evaluation and treatment plan were thorough, and she never rushed me. She truly goes above and beyond to provide as much help as possible. I would highly recommend her to anyone!”

–S., Los Gatos, CA, medical patient.

“Dr. Sitnitsky is hands down one of the best medical doctors I've had. She's thorough in her approach and is incredibly knowledgeable. Each time I've worked with her has been an amazing experience, and I feel completely safe with her recommendations. Her approach is honest and direct, and I find that incredibly reassuring. Thank you, Dr. S. I’ve sent family and friends to you and will continue to do so!”

–A.C., Los Altos, CA, medical patient.

“Dr. Taunk is amazing! His deep expertise in metabolic health helped me get my weight under control for the first time in years. Everyone at Avita MD is so compassionate.”

–L.S., Los Gatos, CA, medical weight loss patient.

“I have to say, hands down, Avita Healthcare is the best clinic I’ve ever set foot in. They are so kind to their patients, so accommodating and respectful of my needs. I was nervous to begin with, but Dr. Ruiz was so kind and respectful, and thoroughly answered all my questions, even with my extensive medical history and serious migraines I had been dealing with for a long time. Dr Ruiz recommended the best treatment for me and exceeded my expectations. Even the assistant was kind to me and helped me with a smile. Overall, I would trust this facility with my life and health, and thank you to dr Ruiz from the bottom of my heart.”

–A.A., Los Altos, CA, migraine patient.

“If you want expertise in metabolic health, see Dr. Taunk. He helped me make real, lasting changes. So grateful for this team!”

–J.C., Los Gatos, CA, metabolic health patient.

“Dr Anthony Lou is a gem!! I came into the clinic for my menopause and hormones, which have been all over the place. I was really struggling to find a clinic that would help me and was a place I trust. I came across Avita MD from a friend and recommended Dr. Anthony Lou, who helped me understand Bio-Identical Hormone Replacement Therapy. I’ve never felt better!! Truly, the staff is kind and caring and puts their patients first. Hats off to this place.”

–S.Y., Los Altos, CA, hormone therapy patient.

“This office is amazing! All providers specialize in different things and are very knowledgeable and professional. I had such a great time during my visits, the staff is nice and joyful, which means a lot as a patient to build that relationship with the clinic. I 100% recommend this clinic to anyone who is looking for a new pcp!”

–D., Los Altos, CA, primary care patient.

“I appreciate how welcoming and supportive the whole team is. Dr. Taunk helped me tackle complex health issues with confidence.”

–T.D., Los Gatos, CA, health patient.