Stone Sarah MD in Chula Vista's eastern Otay Ranch area practices board-certified internal medicine from 1400 East Palomar Street, affiliated with both Sharp Chula Vista Medical Center and Sharp Memorial Hospital. Her internal medicine focus addresses complex adult conditions including cirrhosis, heart failure, and atrial fibrillation, and she screens for comorbid behavioral health concerns — coordinating treatment for depression and anxiety through Breathing Room Counseling when mental health symptoms intersect with chronic medical management. A Brown University medical school graduate board certified in internal medicine since 2001, she maintains hospitalist privileges at both Sharp campuses for acute inpatient cases along the Palomar Street corridor near Otay Ranch Town Center. Her diagnostic workup for acute and chronic illness extends across subspecialty boundaries, and same-day acute conditions that arise outside scheduled appointments route to Perlman Clinic Chula Vista for immediate walk-in evaluation and stabilization. The practice manages advanced internal medicine cases including anticoagulation monitoring for atrial fibrillation, insulin-pump adjustment for type 1 diabetes, and DEXA-based osteoporosis staging with bisphosphonate therapy protocols.