About
Dr. Diana Girnita, MD, PhD, FACR, founded Rheumatologist OnCall® to deliver expert, relationship-driven rheumatology outside the traditional clinic setting. She specializes in diagnosing and treating complex autoimmune and arthritis diseases, including rheumatoid arthritis, lupus, Sjögren's syndrome, psoriatic arthritis, ankylosing spondylitis, myositis, and gout. Her FACR designation reflects fellowship in the American College of Rheumatology.
Dr. Girnita advocates for direct specialty care and has contributed to publications and platforms including KevinMD, Medscape, the ACR, and the New York Times. She co-created the OASIS Program alongside Dr. Mirela Titianu, addressing the interconnected roles of hormones, inflammation, and weight in autoimmune disease. She runs the WhiteCoat YouTube Academy and remains active in rheumatology education across social media.
Conditions Treated
Who is Dr. Girnita right for?
Dr. Girnita is a strong fit for adults navigating complex or hard-to-diagnose autoimmune conditions. Patients with rheumatoid arthritis, lupus, Sjögren's syndrome, psoriatic arthritis, ankylosing spondylitis, or myositis benefit from her focused expertise. She works well with patients who have a positive ANA result and need a clear diagnosis. Those who want thorough, root-cause evaluation and a path toward lasting remission will find her approach well-matched to their goals.
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Frequently Asked Questions
Dr. Girnita specializes in complex autoimmune and arthritis diseases. Her focus includes rheumatoid arthritis, lupus, Sjögren's syndrome, psoriatic arthritis, ankylosing spondylitis, myositis, gout, and positive ANA evaluation. She diagnoses and manages conditions that often go unresolved elsewhere.
Dr. Girnita holds an MD and a PhD and carries the FACR designation, reflecting fellowship in the American College of Rheumatology. This credential marks advanced recognition in the specialty.
Dr. Girnita takes a whole-body approach to autoimmune disease. She focuses on identifying root causes rather than managing symptoms in isolation. Her goal for each patient is lasting remission, not just short-term relief.
Dr. Girnita co-created the OASIS Program with Dr. Mirela Titianu. OASIS stands for Obesity and Autoimmune and Arthritis Integrated Solution. The program addresses the inflammatory connection between excess weight, hormones, and autoimmune disease.
Yes. Dr. Girnita has been quoted and featured in the New York Times, KevinMD, Medscape, and ACR publications. She also runs the WhiteCoat YouTube Academy, an educational platform covering rheumatology topics.
Yes. Dr. Girnita sees patients via telehealth across 20 states and in person at the Irvine, California office. Members receive same-day or next-day telehealth scheduling for urgent needs.
Dr. Girnita built Rheumatologist OnCall® as a direct-care specialty model. She reviews patient records before appointments, dedicates a full hour to new patient visits, and offers direct messaging to members. Her panel allows for thorough, unhurried evaluations.
Doctor profile last updated August 17, 2026