Skip to main content

Rheumatology

Rheumatologists are doctors who specialize in treating inflammatory (rheumatic) diseases. Rheumatologists diagnose and treat many conditions including:

  • Inflammatory diseases that affect joints, muscles, and bones
  • Connective tissue disorders that can affect ligaments, tendons, skin, and other organs
  • Autoimmune diseases that can affect many parts of the body

Examples of some of the diagnosis treated include rheumatoid arthritis, systemic lupus erythematosus, scleroderma, vasculitis, ankylosing spondylitis, Sjogren’s disease and others.


In order to become a rheumatologist, a physician must first complete a training program in internal medicine. This is followed by specialty training, called a fellowship, in rheumatology. Our rheumatologists work with many inflammatory conditions and work closely with Memorial’s Infusion services/care , Cornerstone pharmacy, Valley Imaging, as well as other community partners.

Meet Our Providers

De-Ann Williams, MD

  • Residency at State university of New York Health Sciences Center (SUNY), Brooklyn
  • Fellowship at University of Massachusetts Medical School
  • Board certified in Internal Medicine with primary practice focus on outpatient Rheumatology
  • Works with VMM infusion care in use of disease modifying anti-rheumatic/anti-inflammatory medications
  • Works with specialty pharmacy at VMM Cornerstone (Creekside) in obtaining complex medications for patients

Sarah Dill, MD

  • University of Washington Medical School
  • Internal Medicine training at University of Colorado
  • Fellowship training in Rheumatology at University of Colorado
  • Clinical interests:
    - Spondyloarthritis
    - Inflammatory muscle disease
    - Vasculitis
  • Works part-time as an assistant professor in Internal Medicine and Rheumatology at Pacific Northwest University

Sara Wisner, ARNP

  • Joined the rheumatology group in early 2022
  • Previously worked as ARNP at North Star/oncology and was a registered nurse at Yakima Valley Memorial prior to that