Overlake Arthritis

Overlake Arthritis and Osteoporosis Center is a free standing full-service medical center, with a staff of full-time Board Certified Rheumatologists based in Bellevue, Washington.

Welcome to Overlake Arthritis and Osteoporosis Center, 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 arthritis, autoimmune diseases, gout, and osteoporosis.

Our comprehensive facility offers bone density screening, and a range of clinical research opportunities. We are dedicated to delivering professional and friendly services in a convenient and welcoming environment.

At Overlake Arthritis and Osteoporosis Center, we pride ourselves on offering one-on-one attention with our physician rheumatologists. We collaborate closely with other healthcare professionals and specialists to ensure seamless care for patients with complex rheumatologic conditions. We believe in involving our patients in their care journey, ensuring clear communication and understanding at every step. Our goal is to empower patients to be active partners 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.


Dr. Arinola Dada, MD, FACR.

Arinola Dada, MD, FACR.

Arthritis & Osteoporosis


Dr. Arinola Dada is a highly accomplished rheumatologist with a diverse background and a deep commitment to patient care and research. Born in Cincinnati, Ohio, and raised in Lagos, Nigeria, she earned her undergraduate and MD degrees from the University of Lagos, Nigeria. Dr. Dada then returned to the United States to further her medical training, completing her Internal Medicine residency at the Mercy Hospital of Pittsburgh (now University of Pittsburgh) and subsequently pursuing a Fellowship in rheumatology at the University of Washington, Seattle.

Dr. Dada holds board certifications in Rheumatology and Clinical Densitometry, showcasing her expertise in the field. With over two decades of experience as a practicing rheumatologist since 2001, she not only excels in her role but also wears multiple hats as a dedicated mother, a passionate teacher, a mentor, and a sought-after speaker.

Her journey began as a science researcher, and she later joined the University of Washington as a clinical instructor in Rheumatology, further enriching her knowledge and sharing it with others.

Dr. Dada’s clinical interests span a wide range, including Rheumatoid arthritis, Ankylosing spondylitis, Gout, Psoriatic arthritis, Uveitis, Myositis, Antiphospholipid Antibodies, Systemic Lupus, and Osteoporosis. Her extensive expertise makes her a valuable resource for patients seeking specialized care.

She is a fellow of the American College of Rheumatology and actively participates in numerous professional organizations, including the American College of Rheumatology, Washington Rheumatology Alliance, and the Arthritis Foundation. Dr. Dada also serves as a committee chairperson for the Association of Women in Rheumatology (AWIR), demonstrating her commitment to advancing women in the field of rheumatology.

In addition to her clinical work and commitment to patient education, Dr. Dada is a paid speaker on both local and national circuits, including engagements at the American College of Physicians’ annual meeting and the American College of Rheumatology. Her expertise and engaging speaking style have made her a sought-after presenter at prestigious medical conferences.

Furthermore, Dr. Dada is leading Overlake Arthritis and Osteoporosis Center (OAOC) in bringing clinical research opportunities to patients in the Seattle area, contributing to the advancement of medical knowledge and treatment options.

Her exceptional contributions to rheumatology have earned her numerous accolades, including being recognized as a Top Doc for multiple years in Arthritis Today, participating in the National Arthritis Foundation’s ‘My Doc Rocks’ program, and receiving accolades in the Seattle Met magazine. Dr. Arinola Dada’s unwavering dedication to patient care, education, research, and her impactful speaking engagements make her a respected and invaluable figure in the field of rheumatology.

Dr. Deepa Gali

Dr. Deepa Gali

Dr. Deepa Gali is an accomplished Rheumatologist and has a passion for treating autoimmune diseases and inflammatory arthritis. Dr. Gali received her MBBS (Bachelor of Medicine and Bachelor of Surgery) in India. She completed Internal Medicine/Pediatric residency at Louisiana state University and her Rheumatology fellowship at Wayne State University/Henry Ford Medical Center.

She has been practicing as a Rheumatologist in Washington for the past 7 years. She is known for her expertise in chronic, severe rheumatological conditions. She believes in being fully present for her patients – listening with empathy and spending as much time as a patient needs. She has helped countless patients find relief from their symptoms and lead healthier, more active lives. She is committed to staying up-to-date on the latest advancements in rheumatology in order to provide the best possible care to her patients.

She has a special interest in treating Psoriatic Arthritis, Rheumatoid Arthritis, Ankylosing Spondylitis and Gout. She is also interested in treating pregnant women with rheumatological diseases. These patients often need significant support to go through the entire process of pregnancy and prepare for postpartum care with chronic rheumatological diseases.

Outside of medicine, she enjoys spending time with her family, gardening, and traveling to new places. Her dedication to her work and her community make her an asset to any team.


Katie NP

Katie Cristiano, ARNP

Katie originally grew up in southern California. She graduated from nursing school at Mount St. Mary’s University with her Bachelor of Science in Nursing with a minor in psychology. After working for 7 years as a nurse, in a variety of settings, she went back to school through the University of Cincinnati and received a Master of Science in Nursing through their family nurse practitioner program.

Katie focuses on osteoporosis and has obtained special training in the performance and reading of bone density tests. She also focuses on holistic treatments. Kaite believes that exercise, nutrition, sleep, and stress management are important in controlling a patient’s disease state. These are often needed in addition to pharmacologic management.

Katie finds rheumatology to be a fulfilling field as there are many opportunities to improve the patient’s quality of life. One of her favorite parts of the job is providing teaching and education to the patients about their disease state so they may become their own best advocates.

In her free time, she loves exploring new books, restaurants, coffee shops, and watching baseball and football with her husband.

Tierra NP

Tierra Anderson, ARNP

Tierra Anderson is a board-certified nurse practitioner with over 15 years of direct patient care experience. She is ready and eager to serve patients at Overlake Arthritis and Osteoporosis Center.

Tierra earned her BSN degree at Pace University in New York City. She worked as a registered nurse on an ICU unit for several years before returning to school in order to get her master’s degree in Acute Care Nursing at the University of Maryland. Since obtaining her advanced practice degree, Tierra has worked in both primary care and hospital settings. She has treated adults of all ages, with a particular interest in the geriatric community. She loves working in Rheumatology because it is a challenging yet rewarding specialty.

Tierra was born and raised in Baltimore, Maryland. She has always held a passion for patient care, volunteering at local hospitals and nursing homes even as a pre-teen. Tierra takes great pride in empowering her patients to adopt a holistic-based proactive approach to health.

Tierra is a recent transplant to the Washington area so in her free time she enjoys sightseeing and hiking with her friends!


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.


Sydney E., Medical Assistant at OAOC

We are delighted to introduce Sydney Eisenhart, who has been a valuable member of the OAOC team for a little over 2 months in the role of Medical Assistant. Sydney plays a crucial role in preparing our patients for their appointments by reviewing their charts, assisting with problem-solving, and collaborating with Dr. Dada and our providers to address clinical concerns, lab orders, medication refills, and other patient needs.

Sydney’s favorite aspect of her job is being a trusted pillar in our patients’ healthcare journeys, providing support and guidance in the complex world of healthcare. She cherishes the brief moments spent with each patient, ensuring they feel heard and cared for.

Outside of work, Sydney leads a fulfilling life with her puppy dog, a big fluffy 140lb Alaskan Malamute named Mochi, indulges in her favorite hobby of paddle boarding, and enjoys quality time with her family while plant shopping at nurseries. Her adventurous spirit is evident as she dreams of exploring Japan, the next destination on her travel bucket list.

Sydney’s dedication to patient care, coupled with her warm and compassionate approach, truly embodies the spirit of excellence at OAOC. Join us in celebrating Sydney’s contributions to our team and the exceptional care she provides to our patients every day.

Patients Treated
Years of Caring
Awards & Honors