Navasota Medical Center; Grimes Health Resource Center. Facebook Page; Health Service Directory; Help with Addiction. help.org; ... Grimes County . 423 N LaSalle . Navasota, TX 77868. Office Hours 8 am to 5 pm, Monday thru Thursday; closed Fridays. 936-825-7476. Hospice Brazos Valley. 502 W. 26 th St..