Internal Medicine Associates Internal Medicine Associates 10201 SE Main St., Suite 12 Portland, Oregon 97216 For Appointments call 503-255-7550 Hours 8 a.m. to 5 p.m., Monday-Thursday 8 a.m. to 4 p.m., Friday Specialty Internal Medicine Physicians Marc M. Moroye, MD Ngan-Lien T. Nguyen, MD Gregory E. Robinson View Larger Map Health Plans Accepted Most major health plans are accepted. Please call to verify if a particular insurance plan is accepted.