Orlando, Florida ranks fifth in the nation for the highest rates of new HIV diagnoses, according to the Centers for Disease Control and Prevention. the U.S. Department of Health and Human Services' (HHS) Ending the HIV Epidemic: A Plan for America (EHE) identified Orange County, Florida among counties and states of high concern with respect to new HIV diagnoses. Pre- exposure prophylaxis (PrEP) is a highly effective medication for HIV prevention, but PrEP uptake continues to lag among HIV-negative populations who need it the most. In Orange County, Florida, there were 2037 PrEP users in 2020, and at least 126 of them are female PrEP users, yielding a rate similar to the national average of 6% of PrEP users being women, but the data are not further disaggregated to reflect race and gender of PrEP users. These rates are not enough to outpace the number of new HIV diagnoses being given to Orange County residents. Meanwhile, Black women account for 67% of new HIV diagnoses among women in the South, and are the majority of Florida women receiving new HIV diagnoses. PrEP care requires clinical visits, laboratory services, provider training, and financing. Healthcare providers play a critical role in HIV prevention by prescribing PrEP. However, evidence suggests that a critically low number of providers eligible to prescribe PrEP do so. While there are numerous mHealth interventions for high-risk individuals to initiate and promote adherence to PrEP, only one evidence-based intervention that targets healthcare providers has been developed. The proposed project is an implementation supplement to address the EHE plan involving collaboration with the Orange County Department of Health. This study aims to adopt an existing evidence-based mHealth intervention to provide knowledge-based training and support to healthcare providers to increase PrEP prescription to Black women in Orange County, Florida, a county with one of the highest prevalence rates of HIV in the country. We propose the following aims: 1) To assess Orange County PrEP prescribers' PrEP knowledge and current willingness and readiness to prescribe PrEP for women, especially Black women; and 2) To implement a longitudinal text- messaging educational campaign targeting Orange County medical providers who can prescribe PrEP, and assessing post-test PrEP knowledge and actual prescription. This project contributes to two Orange County EHE Key Strategies and Activities: 1c: Educate primary care providers, internal medicine and urgent care centers and pharmacies on PrEP and PEP; and 2b: Develop a PrEP and PEP provider network to provide rapid access among primary care providers and CBOs.