VSP and EyeMed in-network billing anchors Dr. Tri Duc Phan's solo optometry chair at Hillcrest Optometry, 1246 University Avenue inside the 92103 retail strip. The single-OD format runs comprehensive eye exams, contact lens fittings, and frame dispensing in one small-office footprint, with medical and surgical ophthalmology cases routed to multi-MD groups including Vision Care and Correction near Scripps Mercy Hospital. Routine refractions, glaucoma screenings, dry eye assessments, and diabetic eye exams make up the bulk of the standing appointment book. Dr. Phan dispenses prescription eyewear and sunglasses out of an in-office display, with specialty frame work also routed to neighborhood opticianry shops including Insight Optical Center for patients ordering rimless mounts or unusual lens materials. The University Avenue office handles annual exams for an established Hillcrest patient panel run out of a single-doctor office at the same address. Specialty contact lens refits for high-myopes and presbyopes who have failed standard multifocal designs represent the most demanding clinical work scheduled into the Hillcrest Optometry exam lane.