Prescriptions cannot be written for controlled substances or elective medications. Services not available outside of the United States. Walmart Health Virtual Care provides online medical consultations with physicians, nurse practitioners, and physician assistants who can write prescriptions when medically necessary and permitted by state law. Walmart Health Virtual Care is not a replacement for your primary care physician or an annual doctor's office visit. Video-only appointments are required in 31 states: AK, AR, AZ, CT, DE, FL, GA, HI, ID, IN, IA, KS, LA, ME, MD, MS, MO, NH, NJ, NM, ND, OR, OK, RI, SD, TN, TX, UT, VT, VA and WI.