Ernst Klaus, MD

Dr. Ernst Markus Klaus, MD, MBChB, FRCPC, ABIM, is a board-certified rheumatologist specializing in the diagnosis and treatment of inflammatory joint diseases, autoimmune conditions, and rheumatic disorders. Based in Lutz, Florida, and affiliated with the American Arthritis and Rheumatology Associates (AARA), he provides patient-centered care that focuses on accurate diagnosis, personalized treatments, and education, utilizing advanced diagnostics and therapies, such as biologic infusions, while avoiding pharmaceutical conflicts. He earned his MBChB from the University of Stellenbosch in South Africa (2000), completed internships and community service (2001-2002), and pursued residencies in internal medicine (University of the Free State) and rheumatology (Dalhousie University, Canada, 2013). Certifications include MCC exams (2003-2005), FRCPC fellowships (2012-2013), USMLE/SPEX (2022), ABIM in Internal Medicine (2021), and ABIM Rheumatology (2024). He has held a Florida medical license since 2022. His career includes rural family practice in British Columbia, internal medicine, and community ICU, as well as an 8-year solo rheumatology practice in Chilliwack, BC, before relocating to Florida in 2023 to establish Dr. Markus Klaus Rheumatology in Lutz, which has been serving patients since 2024. Dr. Klaus treats conditions like gout, rheumatoid arthritis, psoriatic arthritis, lupus (SLE), osteoporosis, fibromyalgia, and vasculitis, with an in-office infusion suite affiliated with BendFusion to deliver state-of-the-art infusion biologics, injection osteoporosis therapies, IVIG, and advanced neurological therapies for Myasthenia Gravis and Alzheimer's dementia in a multidisciplinary team approach with a community neurologist. Affiliated with AdventHealth Wesley Chapel, he accepts major insurance providers (e.g., Medicare, BCBS, United, Aetna, Cigna), offers telehealth services, and speaks English, German, and Afrikaans. Patients praise his thoroughness and attentiveness.