Dr. Renzo Martin Corzano, MD

Before anything else, it’s important to say that Dr. Corzano is an excellent physician. He’s the reason I remained a patient for years, dating back to his transition from Bayshire Medical to Desert Oasis. This review, however, is not about his care—it’s about the staggering dysfunction of the office and the broader Desert Oasis Medical organization. I called to schedule my annual physical and was told the next available appointment that worked with my schedule was four months out. Not ideal, but I accepted it and planned accordingly. A week before the appointment, the office called to request a full blood panel in advance—perfectly reasonable. I went in promptly and completed the labs as instructed. Then, 48 hours before my appointment, I received a call informing me that Desert Oasis had decided to stop accepting my UnitedHealthcare insurance plan. After keeping me on the schedule for four months—and after directing me to complete pre-appointment lab work—they chose that moment to… effectively drop me from care. What made this worse was the complete lack of professionalism in how it was handled. The staff member I spoke with showed no empathy, offered no solutions, and made no effort to retain me as a patient. There was no discussion of interim options, no offer to proceed on a cash basis, nothing. Just a flat, indifferent dismissal. I contacted UnitedHealthcare, who confirmed that Dr. Corzano is in-network under my plan. When I relayed this back to the office, I was again told—without explanation or curiosity—that the issue was on the insurer’s end and that I was simply no longer accepted. Again, no attempt to resolve, clarify, or assist. It gets worse. I later learned that Desert Oasis is “grandfathering” certain patients with the exact same UnitedHealthcare plan—yet for reasons no one could explain, I was excluded. Despite being a long-standing patient, I was told I don’t visit often enough. Apparently, maintaining good health is now grounds for dismissal. After waiting four months, completing requested lab work, and acting in good faith at every step, I’m left scrambling to piece together continuity of care because of an opaque and arbitrarily enforced policy. This isn’t just poor administration—it’s a fundamental failure of patient management and basic professional responsibility. Desert Oasis Medical has turned what should be routine preventive care into a bureaucratic mess. It’s difficult not to view this as a stark example of the priorities of a for-profit medical system—where patient relationships and continuity of care are secondary to opaque policies and indifferent administration