David L. Cheng, OD provides optometric care in Allied Gardens through Kaiser Permanente's Zion Medical Center at 4647 Zion Ave, San Diego 92120. Dr. Cheng graduated from the Illinois College of Optometry in 1982 and carries more than four decades of clinical experience in comprehensive eye care, contact lens management, and ocular disease co-management. His examination protocols at the Zion campus include dilated fundus evaluation, intraocular pressure measurement, visual field testing, and optical coherence tomography for patients with glaucoma or macular degeneration risk factors. Allied Gardens residents who manage musculoskeletal conditions alongside vision care receive complementary treatment at Chiropractic Center for Health and Human Potential, where cervicogenic headache therapy can overlap with vision-related symptom workups. The Kaiser integrated model allows Dr. Cheng to access each patient's full electronic health record, cross-referencing medications, blood glucose levels, and systemic conditions that affect ocular health. Contact lens patients in his practice receive fittings for disposable, extended-wear, and specialty toric lenses, with follow-up assessments scheduled to evaluate corneal response and visual acuity. Prescription eye drops and oral medications prescribed after an exam are filled at Alvarado Hospital Medical Pharmacy, which serves the Allied Gardens and Grantville area with a formulary that covers most ophthalmic therapeutics. The Zion Ave facility sits in the residential core of Allied Gardens near the 8 freeway, giving it direct access from Del Cerro and Grantville for patients who commute from neighboring 92120 sub-communities. Dr. Cheng's decades of practice in San Diego's Kaiser network have built referral familiarity with the system's ophthalmologists, enabling streamlined handoffs when cataract extraction, LASIK screening, or retinal intervention becomes necessary.