About Dr. Gregory Warner
Dr. Gregory Warner is a sleep medicine physician at GREG WARNER, MD, INCORPORATED in Fresno, CA, and is also listed at 1 other location.
In Medicare's directory, Dr. Warner is also listed under pulmonary disease, internal medicine, and critical care (intensivists).
Dr. Warner graduated from University of Nebraska College of Medicine in 1980.
According to Medicare, Dr. Warner accepts Medicare assignment.
Where Dr. Warner practices
Other sleep physicians at these clinics
Questions about Dr. Gregory Warner
Where does Dr. Gregory Warner practice?
Dr. Gregory Warner is listed at GREG WARNER, MD, INCORPORATED (Fresno, CA) and Gregory C. Warner, MD (Visalia, CA). Call the clinic to confirm before you book.
How do I make an appointment with Dr. Gregory Warner?
Call GREG WARNER, MD, INCORPORATED at (559) 450-3000 and ask for Dr. Warner. Ask whether you need a referral and whether your insurance is accepted.
What does Dr. Gregory Warner specialize in?
Dr. Gregory Warner specializes in sleep medicine, with pulmonary disease, internal medicine, and critical care (intensivists) also listed. Sleep medicine physicians diagnose and treat conditions such as sleep apnea, insomnia, narcolepsy, and restless legs syndrome.
Does Dr. Gregory Warner accept Medicare?
Medicare's clinician directory lists Dr. Warner as accepting Medicare assignment, which means agreeing to the Medicare-approved amount as full payment for covered services. Confirm with the clinic before your visit.
From the NPI registry (data through November 2, 2026) and Medicare's Doctors and Clinicians directory (released November 12, 2026). These are records physicians and clinics keep with the government, and they can lag behind changes. They do not show board certification. Are you Dr. Gregory Warner, or is something here out of date? Let us know. Find a sleep doctor near you.