belong to the Puerto Rico Senatorial district II. Both of the Districts are represented by two Senators. In 2016, Henry Neumann and Miguel Romero were elected as Senators for District I, while Migdalia Padilla and Carmelo Ríos have been serving as Senators for District II since being elected in 2004. Mayors Mayors of Guaynabo from 1969 to present Mayors of Guaynabo from 1782 to 1969 {| class="wikitable" |- ! Term ! Name |- | 1782 | Cayetano de la Sarna |- | 1800 | Pedro Dávila |- | 1812 | Dionisio Cátala |- | 1816 | Angel Umpierre |- | 1818 | Juan José González |- | 1821 | Joaquín Goyena |- | 1822 | José María Prosis |- | 1823 | Simón Hinonio |- | 1825 | José R. Ramírez |- | 1827 | Antonio Guzmán |- | 1828 | Genaro Oller |- | 1836 | Andrés Degal |- | 1836 | Agustín Rosario |- | 1840 | Francisco Hiques |- | 1844 | Martínez Díaz |- | 1848 | Tomás Cátla |- | 1849 | Andrés Vega |- | 1852 | Justo García |- | 1856 | José Tomás Sagarra |- | 1857 | Manuel Manzano |- | 1859 | Juan Floret |- | 1859 | José Francisco Chiques |- | 1862 | Segundo de Echeverte |- | 1862 | José de Murgas |- | 1869 | Juan J. Caro |- | 1873 | Benito Gómez |- | 1874 | Manuel Millones |- | 1876 | José Otero |- | 1891 | Juan Díaz de Barrio |- | 1914 | José Ramón |- | 1914 | José Carazo |- | 1919 | Narciso Vall-llobera Feliú |- | 1924 | Zenón Díaz Valcárcel |- | 1936 | Dolores Valdivieso |- | 1944 | Augosto Rivera |- | 1948 | Jorge Gavillán Fuentes |- | 1956 | Juan Román |- | 1964 | José Rosario Reyes |} Symbols The has an official flag and coat of arms. Flag This municipality has a flag. Coat of arms This municipality has a coat of arms. Health facilities Professional Hospital Guaynabo located on Felisa Rincón Avenue (formerly Las Cumbres Avenue), is the newest hospital infrastructure built in Puerto Rico. Guaynabo is the only city in Puerto Rico to have a hospital specialized in advanced vascular surgery. Some of the first and newest procedures performed in Puerto Rico during 2009 were done in Professional