Dr Herrera is a graduate of Harvard medical school.  He is board certified in Internal Medicine and has been practicing for 32 years.  Internal medicine is the treatment of diseases like diabetes, hypertension,  dementia, stroke, asthma, lung problems , dementia, wellness and prevention.  He has a masters of Public Health (MPH) degree.  He received an aware for diabetes quality care.  He is certified on wound care.  Dr Herrera is the medical Director for Clarewood Clinic.  He worked as associate profession at University of Texas Medical School from 1990 to 2000.   He has published 15 research articles regarding hypertension and elderly care.  The majority of his practice is in person over 65 years old.  He visits nursing homes and does home visits.  He has been working with hospice patients for 19 years.  He has been married for 39 years, has 4 children and 3 grandchildren.  His hobbies are photography, reading spy novels, and golf.