About OAOC
Infusion Center
Welcome to OAOC Infusion Center, proudly serving Bellevue, WA, and the east side of the Greater Seattle area. Our mission is to provide timely and personalized medical care to patients dealing with a range of conditions, including arthritis, autoimmune diseases, gout, and osteoporosis.
Our comprehensive infusion center is state of the art with your comfort and wellness our number one priority. We are committed to delivering professional and friendly services in a convenient and welcoming environment.
At OAOC Infusion Center, we prioritize personalized attention with our expert team. We collaborate closely with healthcare professionals and specialists to ensure seamless care for patients with complex conditions. Our approach emphasizes patient involvement, clear communication, and understanding at every step. We strive to empower patients to actively participate in their healthcare decisions, creating a comfortable and satisfying consultation experience. Choose us for compassionate, patient-centered care on the east side of the Greater Seattle area.
About
MEET OUR DOCTORS
Arinola Dada, MD, FACR
Arinola Dada, MD, FACR
Board-Certified Rheumatologist in Bellevue, WA | Clinical Research Leader | Gout and Arthritis Specialist | PRP Expert
Dr. Arinola Dada is a board-certified rheumatologist and a nationally recognized expert in the treatment of arthritis-related conditions, including gout, rheumatoid arthritis, ankylosing spondylitis, and osteoporosis. As the founder of Overlake Arthritis and Osteoporosis Center (OAOC), based in Bellevue, Washington, she has built a trusted practice focused on relieving pain, preserving joint function, and improving the quality of life for patients living with autoimmune and inflammatory disorders.
Known for her warm, collaborative approach, Dr. Dada combines over two decades of clinical experience with the latest advances in rheumatology. Her expertise includes the use of regenerative therapies such as platelet-rich plasma (PRP) injections for knee osteoarthritis, as well as personalized treatment strategies for complex conditions like psoriatic arthritis, systemic lupus, and uveitis. Patients throughout the Seattle metropolitan area turn to her not only for her medical knowledge but also for her dedication to listening and educating—empowering them to take control of their health.
Dr. Dada leads a robust clinical trials program at OAOC, offering patients access to cutting-edge treatments through research partnerships with leading pharmaceutical companies. This commitment to innovation has positioned her practice as a top destination for those seeking advanced therapies in the Pacific Northwest, particularly for gout and rheumatoid arthritis.
Born in Cincinnati, Ohio and raised in Lagos, Nigeria, Dr. Dada completed her undergraduate and medical degrees at the University of Lagos. She returned to the U.S. for her internal medicine residency at Mercy Hospital of Pittsburgh (now part of the University of Pittsburgh system) and later completed a rheumatology fellowship at the prestigious University of Washington in Seattle. Her background as a medical researcher and former clinical instructor at the University of Washington fuels her passion for translating science into healing.
Dr. Dada is a Fellow of the American College of Rheumatology and an active member of several professional organizations, including the Washington Rheumatology Alliance and the Arthritis Foundation. She is also a sought-after speaker at national conferences such as the American College of Physicians and the American College of Rheumatology, and has been recognized multiple times in Seattle Met’s Top Doctors and by the National Arthritis Foundation’s “My Doc Rocks” campaign.
Through Overlake Arthritis and Osteoporosis Center, Dr. Dada continues to champion a model of care that is evidence-based, compassionate, and forward-thinking. She welcomes patients seeking expertise in arthritis, autoimmune disease, gout management, osteoporosis, and PRP therapy, as well as those interested in participating in clinical trials that may offer tomorrow’s treatments today.
Watch Dr. Arinola Dada’s TED Talk
Connect with Dr. Arinola Dada on Social Media
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Deepa Gali, MD
Deepa Gali, MD
Rheumatologist in Bellevue, WA | Autoimmune Disease Specialist | Gout and Psoriatic Arthritis Expert
Dr. Deepa Gali is a compassionate and highly skilled rheumatologist serving the Bellevue and greater Seattle community, with a strong clinical focus on autoimmune diseases and inflammatory arthritis. With over a decade of experience in Washington state, she has become known for her thoughtful approach to complex and chronic rheumatologic conditions, including rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and gout.
Patients trust Dr. Gali for more than her medical knowledge—they value her presence, her ability to listen deeply, and her genuine investment in their long-term well-being. Her goal is to help patients not just manage their symptoms but regain a full, active life through personalized, evidence-based care. Dr. Gali is a compassionate and knowledgeable rheumatologist with expertise in diagnosing and managing a broad spectrum of autoimmune and musculoskeletal conditions. She is dedicated to providing personalized, evidence-based care that helps patients achieve lasting relief and improved quality of life. In addition to her clinical expertise, Dr. Gali has a special interest in guiding patients who may benefit from additional support with anti-inflammatory diets—offering practical advice on how nutrition can complement medical treatment and reduce chronic inflammation.
Dr. Gali completed her medical degree (MBBS) in India before relocating to the United States, where she pursued a combined Internal Medicine and Pediatrics residency at Louisiana State University. She went on to complete her Rheumatology fellowship at Wayne State University/Henry Ford Medical Center, training under nationally respected experts in autoimmune disease management. Since then, she has dedicated herself to staying current with the latest advances in biologic therapies and chronic disease management to ensure her patients receive the highest standard of care.
In addition to her clinical practice, Dr. Gali plays a key role at Overlake Arthritis and Osteoporosis Center (OAOC) in Bellevue, a regional leader in arthritis care and clinical research. Her commitment to whole-person care and her ability to build trusting, long-term relationships with patients make her a valued member of the OAOC team.
Outside of medicine, Dr. Gali enjoys gardening, travel, and spending time with her family. Her holistic outlook, both professionally and personally, brings a grounded, human touch to every patient interaction. For those living with complex autoimmune conditions in the Pacific Northwest, Dr. Gali offers not only expertise—but empathy, clarity, and hope.
Justin Putz, DO
Justin Putz, DO
Board-Certified Rheumatologist in Bellevue, WA | Autoimmune Disease Expert | Gout & Arthritis Specialist | Bellevue, Washington
Dr. Justin Putz is a board-certified rheumatologist in Bellevue, Washington, offering expert care to patients living with autoimmune and inflammatory diseases. Known for his precision, empathy, and holistic approach, Dr. Putz helps patients manage complex rheumatic conditions such as rheumatoid arthritis, ankylosing spondylitis, gout, lupus, vasculitis, scleroderma (systemic sclerosis), and inflammatory myopathies. Whether patients are newly diagnosed or seeking second opinions, Dr. Putz delivers individualized treatment plans using the latest in evidence-based care.
His journey into medicine was shaped by a strong foundation of service. Originally from Iowa, Dr. Putz spent five years in the U.S. Army as a combat medic, stationed at Fort Lewis (now Joint Base Lewis-McChord) near Tacoma. That experience instilled in him a deep respect for resilience and a commitment to caring for those facing chronic health challenges. After his military service, he earned his undergraduate degree from the University of Washington and completed medical school at Pacific Northwest University in Yakima. He returned to Iowa for his internal medicine residency, then completed his rheumatology fellowship at the University of California, San Diego—training under nationally recognized leaders in autoimmune disease research and treatment.
At Overlake Arthritis and Osteoporosis Center (OAOC), Dr. Putz serves the Bellevue and greater Seattle community with the goal of helping every patient regain function and peace of mind. He is particularly passionate about early and accurate diagnosis, patient education, and collaborative care strategies that prioritize both physical and emotional wellness. He believes in empowering patients to make informed decisions and takes the time to explain complex conditions in a clear, approachable way.
Dr. Putz’s clinical practice emphasizes the full spectrum of rheumatology care—from advanced gout management and rheumatoid arthritis treatment to vasculitis and connective tissue disease monitoring. He is committed to staying at the forefront of medical innovation and is proud to be part of a practice that also offers access to cutting-edge clinical trials in autoimmune disease and arthritis.
Outside of the clinic, Dr. Putz is an avid reader of science fiction and fantasy, a piano enthusiast, and a lover of the outdoors. He spends his downtime skiing, cycling, and hiking with his dogs—and brings that same energy and curiosity to his medical practice.
For patients in search of a rheumatology specialist in Bellevue who brings both military discipline and a deep sense of compassion to every appointment, Dr. Justin Putz is a trusted partner on the journey to better health.
Saba Khan, MD
Saba Khan, MD
Board-Certified Rheumatologist in Bellevue, WA | Gout & Autoimmune Disease Specialist | Patient Education Advocate
Dr. Saba Khan is a trusted, board-certified rheumatologist with over 13 years of experience caring for patients with complex autoimmune and inflammatory diseases. She serves the Bellevue, WA community with a particular focus on the treatment of gout, rheumatoid arthritis, giant cell arteritis, polymyalgia rheumatica, psoriatic arthritis, and lupus. Known for her thoughtful, patient-centered approach, Dr. Khan is committed to empowering individuals with the knowledge and tools they need to live healthier, more active lives.
After completing her internal medicine residency at Texas Tech University, Dr. Khan pursued specialized rheumatology training through a fellowship at Louisiana State University. Since then, she has built a reputation for clinical excellence and deep compassion—taking the time to truly connect with each patient, explain every step of the diagnostic and treatment process, and provide a safe space where patients feel heard and supported.
Patients frequently describe Dr. Khan as someone who listens with intention and teaches with heart. Her goal is to ensure that every person she treats understands their condition and feels equipped to become an active participant in their care. Whether managing chronic gout flare-ups or diagnosing complex systemic autoimmune conditions, she brings clarity, calm, and a sense of partnership to every clinical encounter.
At Overlake Arthritis and Osteoporosis Center (OAOC), Dr. Khan is part of a collaborative, forward-thinking team that prioritizes innovative care models, including access to clinical trials for cutting-edge therapies. Her particular interest in gout management makes her a sought-after expert for patients across the greater Seattle region who are seeking specialized care for persistent joint pain, uric acid control, and long-term flare prevention.
Beyond her clinical work, Dr. Khan is deeply involved in global outreach and social impact initiatives. She regularly participates in charity clinics outside the U.S. and plays an active role in fundraising efforts for orphaned children in Pakistan. Her values of compassion, service, and education extend well beyond the exam room.
Outside of medicine, Dr. Khan enjoys gardening, cooking, traveling, and spending time with her family. Her commitment to helping others—both locally and globally—makes her not just a skilled rheumatologist, but a respected and admired presence in every community she serves.
Varsha Sridhar, MPH
Varsha Sridhar, MPH
Clinical Research Manager | Physician & Public Health Expert | Rheumatology Trials Coordinator | Bellevue, Washington
Varsha Sridhar brings a global perspective and a deep commitment to evidence-based care to her role as Clinical Research Manager at Overlake Arthritis and Osteoporosis Center (OAOC) in Bellevue, Washington. Originally trained as a General Physician in Southern India, Varsha combines hands-on clinical experience with advanced public health expertise to lead cutting-edge research that drives innovation in autoimmune and rheumatologic care.
Varsha began her medical training at Rajarajeswari Medical College and Hospital in Bengaluru, where she earned her MBBS degree and gained direct experience treating patients across emergency and outpatient settings. She went on to serve as both a junior resident in emergency medicine and a research physician, contributing to studies in neuro-psychological and metabolic disorders before moving to the United States.
Her passion for health equity and data-driven healthcare led her to pursue a Master of Public Health at the University of Washington—one of the nation’s top public health institutions. There, she sharpened her skills in epidemiology, clinical outcomes research, and healthcare systems management.
At OAOC, Varsha leads a growing portfolio of rheumatology-focused clinical trials, connecting patients in Bellevue and the greater Seattle area to groundbreaking therapies for gout, rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and other chronic autoimmune conditions. Her ability to bridge the gap between research and real-world care ensures that studies run smoothly, ethically, and with the patient’s best interest always at the center.
In addition to her expertise in clinical trial coordination, Varsha brings strong skills in laboratory analysis, radio-diagnostic interpretation, and cross-disciplinary team leadership. Her global experience and holistic view of patient care make her an invaluable asset to both the research and clinical teams.
Outside of work, Varsha enjoys engaging with multicultural communities, advocating for patient-centered research, and contributing to projects that improve access to healthcare both locally and internationally.
With her unique background as a physician, public health scholar, and clinical research leader, Varsha Sridhar plays a key role in shaping the future of rheumatologic care at Overlake Arthritis and Osteoporosis Center.
Tierra Anderson, ARNP
Tierra Anderson, ARNP
Board-Certified Nurse Practitioner | Rheumatology Provider | Holistic Arthritis Care | Bellevue, Washington
Tierra Anderson is a board-certified nurse practitioner with more than 15 years of hands-on experience in direct patient care. She brings warmth, clinical expertise, and a proactive mindset to her role at Overlake Arthritis and Osteoporosis Center (OAOC), where she is proud to serve the Bellevue and greater Seattle community. With a strong background in both primary and acute care settings, Tierra specializes in supporting patients with chronic autoimmune and musculoskeletal conditions—empowering them to take charge of their health and well-being.
Originally from Baltimore, Maryland, Tierra began her healthcare journey early, volunteering in local hospitals and nursing homes before she was even a teenager. She earned her Bachelor of Science in Nursing from Pace University in New York City and went on to work in intensive care units, where she developed a deep appreciation for the complexity and resilience of the human body. Determined to expand her scope of practice, she later obtained her Master of Science in Nursing with a focus in Acute Care from the University of Maryland.
Over the years, Tierra has cared for adults across all stages of life, with a particular interest in supporting the geriatric population. She finds her work in rheumatology especially rewarding, drawn to the long-term relationships she builds with patients and the opportunity to make a meaningful impact on chronic pain, mobility, and quality of life. Her approach to care is rooted in listening first—understanding each patient’s unique journey and creating a tailored, holistic treatment plan that aligns with their values and goals.
Tierra’s clinical interests include autoimmune disease management, osteoporosis care, and lifestyle-based strategies to reduce inflammation and joint pain. Patients appreciate her gentle yet informed guidance, as well as her ability to make complex conditions more approachable and manageable.
Since relocating to Washington, Tierra has embraced all that the Pacific Northwest has to offer. Outside of the clinic, she enjoys hiking, sightseeing, and spending time with friends—making the most of the region’s natural beauty.
For patients in Bellevue looking for a nurse practitioner who combines skill, heart, and a whole-person approach to arthritis care, Tierra Anderson is a dedicated partner on the path to better health.
Diana Szilvasi, DNP, ARNP
Diana Szilvasi, DNP, ARNP
Family Nurse Practitioner | Rheumatology Provider | Holistic Autoimmune Care | Bellevue, Washington
Dr. Diana Szilvasi is a board-certified Family Nurse Practitioner with a Doctor of Nursing Practice (DNP) degree and more than a decade of experience in patient care. She currently serves the Eastside community through her work at Overlake Arthritis and Osteoporosis Center (OAOC) in Bellevue, where she provides comprehensive, compassionate care for patients living with autoimmune diseases, inflammatory arthritis, and osteoporosis.
Diana’s clinical journey began in 2011 in home health, followed by six years on the frontlines of acute care as a charge nurse in a hospital medical/oncology unit. This solid foundation in both chronic and complex conditions now informs her work in rheumatology, where she applies that same attentiveness, clinical rigor, and empathy to help patients navigate the challenges of rheumatoid arthritis, psoriatic arthritis, gout, and other autoimmune conditions. Her transition into outpatient rheumatology allowed her to form deeper relationships with patients and focus on long-term health strategies tailored to each individual.
Born in Romania and raised in Bellevue, Diana is proud to serve the very community she has called home since childhood. She earned her Bachelor of Science in Nursing from the University of Washington, followed by her Doctor of Nursing Practice from Seattle University—equipping her with both the academic foundation and clinical insight to offer holistic, evidence-based care.
Diana is known among her patients and peers for her attentive, whole-person approach. She believes that healing begins with listening—and works closely with each patient to understand their lifestyle, challenges, and goals in order to build a care plan that not only manages disease but improves day-to-day quality of life.
At OAOC, she is part of a collaborative team advancing care for patients across the greater Seattle region, including access to clinical research opportunities in arthritis and autoimmune disease.
Outside of the clinic, Diana finds joy in outdoor adventures, fitness, cooking, and traveling—but nothing compares to time spent with her close-knit family. Whether she’s on a trail or at the bedside, her deep roots in the Bellevue community and her passion for service guide everything she does.
For patients seeking personalized, thoughtful rheumatology care in Bellevue, Diana Szilvasi brings a unique blend of clinical excellence, lived experience, and community connection.
MEET OUR TEAM
Our friendly professional team will greet you with a smile, and make your visit with us as comfortable as possible. We are focused on ensuring our clients receive timely and caring medical services.
We are here to help you in any way we can. Have a question? Feel free to ask anyone of us. We look forward to helping make your visit go smoothly.
