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Dr. Patricia Sitnitsky, M.D. consulting patient in a medical setting.
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Your Medical Home

Primary Care Doctors Los Gatos | Los Altos | Mountain View

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WELCOME TO AVITA MD

YOUR ADVOCATES FOR LIFELONG HEALTH

At Avita MD, we believe good medicine starts with attention. Patients deserve more than rushed visits, scattered records, and one-size-fits-all advice. That is why we built a physician-owned medical practice designed to bring primary care, preventive care, wellness, and advanced diagnostics under one roof.

At our Los Gatos, Los Altos, and Mountain View offices, we provide personalized care that is practical, thoughtful, and easier to access. Our goal is to give every patient a true medical home, where routine visits, ongoing treatment, referrals, and long-term wellness planning all work together instead of competing for your time.

As an independent practice, Avita MD is free to focus on what serves patients best. We use advanced medical technology, direct communication, and individualized care plans to help you manage health conditions, close care gaps, and move through the healthcare system with more clarity and support.

We have 500+ five-star Google reviews, 11 providers who speak English, Spanish, Russian, Ukrainian, Cantonese, Hindi, Urdu, and Vietnamese, hospital privileges at El Camino Health and Stanford, and on-site lab draws. We accept most major PPO plans, Medicare, and HMO insurance. Call (408) 495-5770 or book online at avitamd.com.

Dr. Patricia Sitnitsky, M.D. primary care doctor in Los Gatos
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Precision Medicine

A Primary Care Provider in Los Gatos That Looks Deeper

At Avita MD, we believe better answers come from better data. Our precision medicine approach uses your individual health information to look beyond surface-level symptoms and identify what may be driving fatigue, hormone changes, stubborn weight gain, digestive issues, brain fog, or ongoing health concerns.

We use tools such as genetic testing, hormone and cortisol assessment, microbiome analysis, and metabolic panels to understand how your body is functioning in real time. From there, your primary care provider can build a care plan around what is actually happening, not guesswork.

For patients looking for a primary care provider in Los Gatos, this means a more complete approach to health. It means support for prevention, insight into chronic symptoms, and a clearer path forward when standard visits have not gone far enough

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Thoughtful Care, From Day One

A Primary Care Practice That Makes It Easier to Get Started

Finding a new primary care provider in Los Gatos, Los Altos, or Mountain View should not feel like another project on your list. At Avita MD, we make the process clear from the start, whether you are booking your first annual physical, establishing ongoing primary care, or looking for a doctor who can help manage more complex health concerns.

Our team helps new patients with scheduling, insurance questions, records, and next steps before the first visit, so you can move into care with less confusion and more confidence. We accept most major PPO plans, Medicare, and HMO insurance. Call (408) 495-5770 or book online at avitamd.com. Same-day and next-day appointments are available.

  • Establish care with a physician-led team
  • Get help with insurance and coverage questions
  • Book preventive visits, follow-ups, and physicals
  • Access in-person care with a practice that values continuity
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Care Should Be Easier to Reach

Same-Day Doctor Visits When Care Cannot Wait

Some health concerns should not sit on your calendar for three weeks. If you are dealing with new symptoms, an illness, medication concerns, or a problem that needs attention now, Avita MD offers same-day doctor visits when availability allows.

This is still the Avita MD model: thoughtful, physician-led care with real follow-through. You are not being rushed through a generic urgent care script. You are being seen by a team that can assess the issue, recommend treatment, manage prescriptions, and guide the next step if follow-up is needed.

  • Same-day appointments available most days
  • In-person care for urgent but non-emergency concerns
  • Support for symptoms, illness, prescriptions, and follow-up
  • Easier access to a team that already understands your care

Dr. Patricia Sitnitsky, M.D.

Internist, Primary Care Doctor, Obesity Specialist

Dr. Patricia Sitnitsky is a physician trained at Stanford University and double board-certified by the American Board of Internal Medicine and the American Board of Obesity Medicine. With more than 20 years of experience, she founded Avita MD to offer something many patients struggle to find: a medical practice that combines clinical depth with real advocacy.

Her work brings together internal medicine, preventive care, and a broader view of wellness. The result is a clinic built to help patients understand their health, stay in control of their treatment, and get more from their relationship with their doctor.

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We’re in This Together

Meet the Team Behind Your Care

Avita MD is built around a collaborative care model. Our providers bring experience across primary care, preventive medicine, functional health, and ongoing treatment for complex health conditions. Our team includes board-certified physicians and experienced physician assistants who share the same standard of care.

Every provider at Avita MD is chosen for clinical judgment, communication, and the ability to build trust with patients. Whether you are coming in for routine visits, wellness planning, medical weight loss, or support for chronic conditions, you will have a team that listens closely and follows through.

We believe healthcare works better when patients feel comfortable, heard, and understood, which is why our providers speak English, Spanish, Russian, Ukrainian, Cantonese, Hindi, Urdu, and Vietnamese. And that is also why our focus stays on individualized care, careful evaluation, and long-term support rather than rushed transactions.

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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Avita MD has offices in Los Altos, Mountain View, and Los Gatos.

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Better Health Starts Here

Health & Wellness Services

Primary Care Annual Physical Immigration Physical Men’s Health Women’s Health

Your Medical Home

Primary Care That Looks at the Full Picture

Primary care at Avita MD is built for patients who want more than quick visits and generic advice. We provide physician-led care that helps you stay current with preventive screenings, manage ongoing health concerns, and make sense of new symptoms before they turn into larger problems.

This is where routine care becomes more useful. Your provider looks at your history, risk factors, lab work, and day-to-day health patterns to build a plan that reflects the full picture. For patients in Los Gatos, Los Altos, and Mountain View, this means easier access to a medical team that listens, follows through, and helps guide the next step.

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Prevention With More Depth

Annual Physicals in Los Gatos, Los Altos, and Mountain View

An annual physical should do more than confirm that everything looks fine. At Avita MD, this visit is used to review your health history, monitor risk factors, update preventive screenings, and build a clearer picture of where your health stands now.

For many patients, the annual exam is where subtle changes first come into focus. Blood pressure trends, cholesterol shifts, fatigue, sleep disruption, and metabolic changes often start quietly. An annual screening helps catch those patterns earlier and gives you a more useful plan going forward. Most insurance covers annual physicals at 100%, and same-day and next-day appointments make it easy to get an annual physical at Avita MD.

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Medical Examination for Immigration

Your Designated USCIS Civil Surgeon

The green card medical examination is a required step for many applicants, and accuracy matters. Dr. Patricia Sitnitsky is a designated U.S. Civil Surgeon authorized to perform immigration physicals, complete I-693 forms, and guide patients through the process with clarity and attention to detail.

At Avita MD, patients receive compassionate support, efficient scheduling, and a provider who understands how to help them avoid common delays. If you are preparing for this part of the immigration process, our team is here to help you move through it with confidence.

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Care That Keeps Up

Men's Health With a Stronger Clinical Lens

Men’s health concerns often show up gradually. Lower energy, weight gain, reduced exercise tolerance, sleep changes, blood pressure issues, and hormone shifts can build over time without one obvious cause. At Avita MD, men’s health visits are designed to look deeper and identify what may be driving the change.

Our team evaluates symptoms in context, with attention to preventive care, metabolic health, hormone balance, cardiovascular risk, and long-term wellness. The goal is not to dismiss symptoms. It is to understand them and build a plan that makes sense.

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Thoughtful, Ongoing Support

Women's Health That Connects the Dots

Women’s health needs change over time, and good care should reflect that. At Avita MD, women’s health visits can include preventive care, hormone evaluation, metabolic health review, symptom assessment, and support for concerns that may affect energy, sleep, mood, weight, or cycle changes.

We focus on individualized care that takes the whole patient into account. That includes your history, your goals, and the practical realities of everyday life. The result is a more useful medical relationship and better continuity over time.

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Advanced Care

Concierge-Level Whole-Patient Support

At Avita MD, patients have access to a level of support that often feels difficult to find in standard healthcare settings. Our primary care provider model goes beyond routine checkups and brief follow-up visits.

We help patients manage complex health conditions with advanced diagnostics, personalized treatment plans, and direct communication with the care team. Whether you are working through chronic illness, trying to stay ahead of risk factors, or need support between visits, our providers are here to help coordinate the next step.

Telehealth offers flexible access when an in-person visit is not necessary, and our in-house team helps manage prescriptions, referrals, and follow-up care without unnecessary delays. Avita MD offers comprehensive support, telehealth appointments, and in-house coordination of referrals, prescriptions, and follow-ups – truly concierge-level care but without membership fees.

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Primary Care & Wellness

Primary Care Appointments

At Avita MD, primary care is designed to feel more personal, more efficient, and more useful. We combine experienced physicians, modern diagnostic tools, and a patient-centered approach to deliver medical care that is both high-touch and clinically grounded.

For patients looking for a primary care physician or primary care provider, that means easier access to care, stronger follow-through, and a practice that pays attention to the details that shape long-term health.

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Chronic Medical Conditions

Avita MD cares for patients with both acute illness and chronic medical concerns. Many of these health conditions require regular visits, medication adjustments, monitoring, and a provider who understands how the full treatment plan is evolving over time.

Consistency matters. When the same office helps manage blood pressure, diabetes, high cholesterol, symptoms, prescriptions, and follow-up, care becomes easier to navigate and more effective to maintain.

Telehealth Services

We offer telehealth primary care services alongside in-person appointments to make care more accessible and more convenient. Our physicians and support team value clear communication, affordable options, and practical access to treatment when patients need it.

The goal is simple: help you get the care you need, when you need it, without adding more friction to your schedule.

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Backed by Data

Medical Weight Loss with GLP-1s

Our medical weight loss program is designed for patients who want a more complete understanding of why weight has become difficult to manage. We use GLP-1 medications, including Ozempic, Wegovy, Zepbound, and Mounjaro, alongside lab work, hormone review, genetic testing, nutrition support, and exercise counseling to build a plan that reflects the full picture.

This is not generic advice. It is a structured, physician-guided treatment that looks at thyroid function, cortisol patterns, metabolic resistance, and other factors that may be making progress harder than it should be.

The goal is steady, sustainable change rooted in medicine, not shortcuts.

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Chronic Care Management

Remote Patient Monitoring

Let Us Monitor Your Health from the Comfort of Your Home

Avita MD’s remote patient monitoring program helps patients stay connected to their care team between office visits. Using advanced medical technology, we can track key health information from home and support ongoing care with more consistency.

This program is especially useful for patients who need closer oversight for chronic conditions, medication response, or treatment progress. It adds convenience, improves access, and helps your primary care doctor stay informed without requiring unnecessary trips to the office.

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WELLNESS & SPECIALTY SERVICES

Gut Health Heart Health Migraine Treatments BHRT IV THERAPY

Whole-Body Health

Functional Medicine Gut Protocol

Digestive health affects much more than digestion. It can shape energy, inflammation, immunity, and even mood. Our gut protocols use advanced testing from Genova and US BioTek to identify microbiome imbalance, food sensitivities, SIBO, and other factors that may be contributing to symptoms.

From there, we build a targeted plan that may include elimination diets, supplements, and nutrition guidance chosen for your specific needs.

For patients dealing with bloating, reflux, IBS, fatigue, or brain fog, this is a more structured way to understand what the body is trying to tell you.

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Get Answers. Stay Ahead.

Heart & Health Screenings

Heart health screening should do more than skim the surface. At Avita MD, we use advanced lipid testing, inflammation markers, genetic testing through 3x4 Genetics, and in-house diagnostics to look for cardiovascular risk before symptoms become obvious.

We evaluate the markers that matter, from cholesterol and insulin resistance to lipoprotein(a), then help patients understand what those numbers mean and what to do next. When appropriate, we also help patients access evidence-based treatment such as Repatha and Vascepa. This is preventive care with more detail and more direction.

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Relief That Starts With Better Evaluation

Migraine Care With a Broader Medical View

Migraine treatment works best when it accounts for patterns, triggers, frequency, and the way symptoms affect day-to-day life. At Avita MD, migraine care is approached with the same attention we bring to the rest of primary care: careful listening, thoughtful evaluation, and treatment plans that are grounded in the patient’s full health picture.

For patients dealing with recurring headaches, migraine symptoms, or treatment frustration, our team helps determine the next step and guide care more clearly.

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On The Level

Bioidentical Hormone Replacement Therapy (BHRT)

Hormone shifts can affect sleep, mood, metabolism, focus, and overall well-being. At Avita MD, BHRT begins with careful evaluation. We use bloodwork, DUTCH testing, and symptom review to understand what is changing and what kind of support may help.

We offer individualized hormone therapy for both women and men, including pellet therapy and testosterone optimization with appropriate monitoring. The process is structured around your labs, your symptoms, and your health goals. That makes treatment more precise and far more useful.

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Fast-Track Your Wellness

IV Infusion Therapy

There are times when recovery, hydration, or nutrient support needs to happen quickly. Our IV infusions deliver nutrients directly into the bloodstream, which allows for efficient absorption and a more immediate effect.

Options include the Myers’ Cocktail, high-dose Vitamin C, NAD+, glutathione, hydration therapy, and customized blends based on symptoms, labs, and treatment goals.

Whether you are recovering from illness, dealing with stress, or looking for wellness support, IV therapy can be a practical tool when used thoughtfully.

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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.