About Dr. Justin Fu
Dr. Justin Fu is a sleep medicine physician at JUSTIN A. FU, MD A MEDICAL CORPORATION in Rancho Cucamonga, CA.
In Medicare's directory, Dr. Fu is also listed under internal medicine.
Dr. Fu graduated from Tufts University School of Medicine in 2004.
According to Medicare, Dr. Fu accepts Medicare assignment.
Where Dr. Fu practices
Questions about Dr. Justin Fu
Where does Dr. Justin Fu practice?
Dr. Justin Fu is listed at JUSTIN A. FU, MD A MEDICAL CORPORATION (Rancho Cucamonga, CA). Call the clinic to confirm before you book.
How do I make an appointment with Dr. Justin Fu?
Call JUSTIN A. FU, MD A MEDICAL CORPORATION at (909) 223-2113 and ask for Dr. Fu. Ask whether you need a referral and whether your insurance is accepted.
What does Dr. Justin Fu specialize in?
Dr. Justin Fu specializes in sleep medicine, with internal medicine also listed. Sleep medicine physicians diagnose and treat conditions such as sleep apnea, insomnia, narcolepsy, and restless legs syndrome.
Does Dr. Justin Fu accept Medicare?
Medicare's clinician directory lists Dr. Fu 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. Justin Fu, or is something here out of date? Let us know. Find a sleep doctor near you.