Keys Mobile Medical Services

To make an appointment, please call 305-907-7550.

Keys Mobile Medical Services
100430 Overseas Highway, Suite 300
Key Largo, FL  33037




Scott Williams

Scott Williams, RN-BC, Ambulatory Care Certified RN

Scott Williams provides quality nursing care and related services to residents of the Florida Keys. He is an RN-BC / Ambulatory Care Certified RN with certifications in ONS, Chemotherapy and Biotherapy. He has been a licensed Registered Nurse in Florida for fourteen years, having served two years as a Certified Nursing Assistant and three years as an Emergency Department Staffing Coordinator. His high quality of patient care includes starting IVs, flushing and accessing ports, and working with PICC lines.

Receiving his LPN from Miami-Dade College Medical Campus in July 2006 and completing the Transitional RN Program there in December 2007, he graduated from Miami-Dade’s Bachelor’s Program in July 2010. He attended Maryville University from May 2014 to August 2016, received his Adult/Gerontology Nurse Practitioner Master’s of Science in Nursing, and earned his Nurse Practitioner Certification in December 2016.

Katherine Arrastia

Katherine Arrastia, RN

A highly dedicated professional with excellent communication, problem-solving and organizational skills, and a proved record of accomplishment that demands excellence from others, Katherine Arrastia promotes quality teamwork. She is a Registered Nurse who is deeply committed to providing quality, compassionate patient care and is skilled in providing care to a diverse population. She is fluent in English and Spanish. Her nursing background includes adult and pediatric internal medicine, urgent and emergency care, outpatient surgery (pre-op and PACU), and ICU experience.

She earned her LPN from Mercy Hospital School of Practical Nursing in Miami in April 2017, progressing to Miami-Dade College’s Benjamin Leon School of Nursing where she earned her Associates degree in Science of Nursing in December 2018. She received her Bachelor’s degree in Nursing from Daytona State College in Daytona Beach, Florida, in December 2022.