David L Hays, MD Primary Care Specialty: Family Medicine Clinical Interests: Adolescent Medicine, Colonoscopy, Depression, Diabetes, Smoking Cessation, Vasectomy, Weight Management, Complete Women's Health Languages: English, Russian, Interpreters Available Gender: Male Education and Certification Medical School: Emory University. Residency: Oregon Health & Science University. Internship: Oregon Health & Science University. Contact Information Practice Name: GreenField Health Clinic Office Locations Primary Address Greenfield Health System 2606 NE Broadway Suite C Portland, OR, 97232 Phone: 503 292-9560 Fax: 503 292-9510 Clinic Hours: Weekdays Hospital Locations Primary Address Legacy Emanuel Medical Center 2801 N. Gantenbein Portland, OR, 97227 Phone: 503-413-2200