At Avita MD, we are redefining the way healthcare is done. Our patient-first philosophy and a precision approach is designed to deliver both a better healthcare experience and better outcomes. Founded by Dr. Patricia Sitnitsky, a dual board-certified physician in internal and obesity medicine, our practice was built on the belief that healthcare should work for you. From advanced testing and functional protocols to aesthetic services, our team provides personalized, evidence-based treatments under one roof. We are here to guide, educate, and advocate for you, ensuring you always receive the best care available.
Unlike traditional practices bound by insurance quotas or hospital systems, Avita MD was designed to put patients first. With seamless communication, on-site testing, and access to services you won’t find in most clinics, our team ensures that every patient feels supported, empowered, and confident in their path to long-term wellness.
Our full spectrum of services supports all your wellness needs under one roof, from preventative care to personalized treatment plans and collaboration with leading Bay Area specialists. Here are just some of the services we offer:
Comprehensive services to support hormonal balance, reproductive health, and long-term wellness. From PCOS and fertility testing to perimenopause, menopause, and sexual health, our personalized care adapts to every stage of life.
Board-certified medical weight loss care, including access to our in-house dietitian, metabolic support, hormone optimization, and GLP-1 protocols.
Advanced diagnostics to identify inflammation and imbalances in the gut microbiome and build personalized solutions, helping you heal the gut and strengthen whole-body health.
Personalized care for hormone balance, sexual wellness, and disease prevention. From testosterone therapy and prostate evaluations to metabolic support, our programs are designed to help men maintain vitality and long-term health.
Advanced testing, hormone optimization, IV nutrient therapies, and functional nutrition to preserve health as you age. By uncovering risks early and strengthening your body at the cellular level, we help you extend your vitality and thrive at every stage of life.
Our heart health services blend functional medicine with advanced cardiology tools to detect risks before they become problems. From inflammation markers and metabolic screening to evidence-based medications and dietitian support, we tailor care to strengthen your heart and safeguard your future.
Our team of dedicated healthcare professionals brings decades of expertise in specialized areas like functional and longevity medicine, obesity medicine, hormone optimization, preventative care, gut health protocols, men's and women's wellness, and managing acute and chronic conditions.
Dr. Patricia Sitnitsky, M.D., is a board-certified physician specializing in Internal Medicine and Obesity Medicine. Dr. Sitnitsky graduated from Stanford University School of Medicine and is certified by the American Board of Internal Medicine and the American Board of Obesity Medicine. Dr. Sitnitsky is also a Diplomate of the Obesity Medicine Association. She is affiliated with El Camino Hospital. Dr. Sitnitsky has 20 years of experience practicing medicine.
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Ganna Baetge is a highly experienced Physician Assistant with over two decades of dedicated service in the field of medicine. Graduating from Kharkiv Medical School in Ukraine, she furthered her studies at Stanford University, solidifying her foundation in medicine. Over the past 20 years, she has honed her skills and expertise, particularly focusing on urgent and family care medicine.
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Pamela Ruiz is a dedicated Physician Assistant specializing in preventative care and longevity medicine. Her journey into healthcare began at Cornell University, where she earned a degree in Nutritional Science and developed a passion for preventative medicine. With a Master's degree in Physician Assistant Studies and multiple years of experience, including at concierge practices, Pamela focuses on treating patients holistically, ensuring that each individual's overall well-being is prioritized for long-term health and vitality.
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Dr. Fariha Ashraf, M.D. is a board-certified physician specializing in Primary Care and Internal Medicine. She graduated from Sindh Medical University and completed her residency in Internal Medicine at UCF/HCA Florida Healthcare - Gainesville. She has extensive experience managing chronic and acute illnesses in both primary care and hospital settings and is affiliated with El Camino Hospital.
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Anthony Lou is a highly accomplished healthcare provider with a well-rounded background in primary care and advanced training in multiple medical specialties. He completed his medical education at the University of California, Davis, where he earned his Master of Health Services in Physician Assistant Studies. Anthony’s commitment to clinical excellence has led him to develop extensive expertise in managing acute and chronic conditions, enabling him to deliver comprehensive, individualized patient care.
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Claire Hooker is a compassionate Physician Assistant committed to providing exceptional care to every patient. After graduating from the University of California, Davis, Claire completed her graduate medical studies at Franklin Pierce University in Arizona. With a strong foundation in both medical knowledge and interpersonal skills, Claire believes in treating the whole person, understanding that health is not just about addressing physical symptoms, but also about supporting emotional well-being and making sure patients feel heard and valued.
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Dr. Pardeep Taunk, M.D, is a board-certified Internal Medicine physician. He completed his residency at Coney Island Hospital and earned his medical degree from St. George’s University. Dr. Taunk has broad inpatient experience across hospital systems nationwide, with a focus on critical care, end-of-life care, and code response. He also has a background in cancer research and has co-authored multiple publications in GI, immunologic, and oncologic medicine.
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Dr. Jyotsna Vincent, M.D., is a board-certified Internal Medicine physician with over a decade of experience in academic and community health settings. She earned her medical degree and completed her residency at Georgetown University Hospital, where she trained at the NIH and VA Medical Center. Before joining Avita MD, Dr. Vincent served as an Associate Physician at Kaiser Permanente and UCSF. Her clinical focus includes preventive medicine, chronic disease management, and helping patients navigate complex care with compassion and continuity.
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Dr. Deborah Salom, D.O., is a board-certified Family Medicine physician with over 20 years of experience. She earned her medical degree from Western University of Health Sciences and completed residency at Tempe St. Luke’s Hospital, serving as Chief Resident. She also completed fellowships in Psychiatry, Addiction Medicine, and Health Policy. Her interests include women’s health, immigration health, and wellness care. Dr. Salom is dedicated to inclusive, patient-centered care that empowers individuals and families to thrive.
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Whitney Stannard, PA-C, is a board-certified Physician Assistant trained at Stanford University with a background in clinical medicine and public health. She earned dual master’s degrees in Biomedical Sciences and Public Health from Tufts University before completing her M.S. in Physician Assistant Studies at Stanford. Her experience includes Stanford Health, the VA, and MD Anderson, with a focus on primary care, women’s health, and investigational therapies. Whitney provides compassionate, evidence-based care centered on communication, education, and whole-person wellness.
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Sarah Downum, PA-C, is a board-certified Physician Assistant with a Master of Science in Physician Assistant Studies from the University of Michigan, where she graduated with honors. Before becoming a PA, she worked as a Clinical Research Coordinator at UCSF Medical Center and co-authored a publication in The New England Journal of Medicine. Her training spans family medicine, internal medicine, women’s health, and dermatology. Sarah provides compassionate, evidence-based care that empowers patients and supports lifelong well-being.
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Avita MD combines the warmth of a neighborhood clinic with the precision of a world-class medical center. With locations in Los Altos, Mountain View, and Los Gatos, we’ve designed a system built for seamless access to excellent care.
From our multilingual call center and HIPAA-compliant patient portal to on-site diagnostics and robust partnerships with leading specialists, Avita MD ensures seamless, coordinated care.
At Avita MD, you are not just a patient. You are family.
