In Bonita, Chula Vista-area internist and pulmonologist Donald A. Sandweiss, MD, maintains a private practice on Surrey Drive, holding board certification in both internal medicine and pulmonary disease from the University of Michigan Medical School class of 1967. His pulmonology training included dual residency tracks in internal medicine and neurology at the University of Michigan, and his prescription management for respiratory conditions is supported by local dispensaries such as South Bay Pharmacy for maintenance inhaler and nebulizer supply fulfillment. Dr. Sandweiss's clinical scope covers the diagnostic workup of chronic obstructive pulmonary disease, asthma, interstitial lung disease, and sleep-disordered breathing within the Bonita community along Sweetwater Road and Bonita Road. For geriatric patients transitioning between acute and long-term care settings, his internal medicine practice coordinates with residential facilities such as Bonita Villa Senior Living to maintain medication continuity across care environments. The practice's most complex evaluations involve full pulmonary function testing with pre- and post-bronchodilator spirometry, DLCO diffusion capacity measurement, and six-minute walk test protocols for staging COPD severity per GOLD classification criteria.