A physiology-driven framework for preventive and executive health, Y4 Oxygen-First is a medical framework focused on how efficiently the body delivers, stabilizes, and utilizes oxygen before disease develops.
Modern medicine excels at diagnosing disease once it is established. What it often misses is the early loss of physiologic reserve, the subtle strain that accumulates long before abnormal tests appear.
Many individuals with normal labs and imaging experience:
These signals are often dismissed because routine testing appears “normal.”
Oxygen is not just a saturation number.
What matters is:
Loss of reserve often appears first, before disease is detectable.
Efficiency of ventilation, airway mechanics, and gas exchange - not just resting values.
Overnight oxygen stability, sleep fragmentation, and neurologic recovery capacity.
How effectively oxygen is converted into usable energy at the cellular level.
The physiologic oxygen demand created by chronic stress and high cognitive output.
Professionals and executives with sustained cognitive or physical demands
Individuals with fatigue or reduced resilience despite “normal” testing
Those seeking upstream prevention rather than late-stage intervention
Y4 Oxygen-First is a framework, not a protocol — grounded in physiology and personalized.
While 'wellness' clinics often guess, Dr. Yaqub applies Mayo-standard clinical rigor to human performance. By integrating elite pulmonary diagnostics with advanced vascular restoration, he identifies the cellular 'bottlenecks' that standard internal medicine overlooks.
At KEY MD Newport Beach, you aren't just a patient; you are under the oversight of a specialist trained at the global pinnacle of respiratory and metabolic science.
To maintain Mayo-standard clinical precision and 24/7 intimacy for our members, Dr. Kashif Yaqub limits his practice to a select group of high-performance individuals. Please complete this brief clinical intake so we can determine which tier of the Y4 Oxygen Framework TM best aligns with your biological goals.
Kashif Yaqub, MD
Pulmonary & Internal Medicine
Executive and Preventive Health
Y4 Oxygen-First reflects a clinical focus on upstream physiology, integrative care, and long-term resilience.
For high-peforming membership inquiries:
Phone: (949) 678-8885
Email: info@keymdnewport.com
