Diabetes & Endocrinology Associates

Hours & Telephone Numbers

Main number 401-351-7100
Dr. Chang’s Secretary 401-490-5872
Dr. Dobrzynski’s Secretary 401-490-5877
Dr. Ortiz’s Secretary 401-490-5867
Dr. Thomas’s Secretary 401-490-5870
Dr. Ummaritchot Secretary 401-490-5871
Robin (Nurse Educator) 401-490-5856
Laboratory 401-490-5888
Medical Assistant (Prescriptions) 401-490-5860
Billing Department 401-490-5854 or 401-490-5855


All Patients of Diabetes & Endocrinology Associates are encourage to contact the office during routine office hours for appointment scheduling , or general questions.

Office Hours: Monday through Friday, 9:00am to 4:00pm, closed 12:00pm to 1:00pm for lunch daily.