Rosemarie Co, NP

Rosemarie Co is a Family Nurse Practitioner who brings 20 years of critical-care nursing experience to her role at Sierra Rheumatology. She is licensed as a Family Practitioner and double-certified through both the American Nurses Credentialing Center (ANCC) and the American Association of Nurse Practitioners (AANP).

She earned her Bachelor of Science in Nursing from Toronto Metropolitan University in Ontario, Canada, and went on to complete her Master of Science in Nursing at Samuel Merritt University.

Rosemarie's clinical approach is built on quality care delivery, patient education, and transparent communication — making sure patients and families always understand what's happening, what to expect, and what comes next.