About Dr. Marc Greenberger
Dr. Marc Greenberger is a sleep medicine physician at Unasource Sleep Center LLC in Troy, MI.
In Medicare's directory, Dr. Greenberger is also listed under pulmonary disease and critical care (intensivists).
Dr. Greenberger graduated from University of Michigan Medical School in 1989.
According to Medicare, Dr. Greenberger accepts Medicare assignment.
Where Dr. Greenberger practices
Questions about Dr. Marc Greenberger
Where does Dr. Marc Greenberger practice?
Dr. Marc Greenberger is listed at Unasource Sleep Center LLC (Troy, MI). Call the clinic to confirm before you book.
How do I make an appointment with Dr. Marc Greenberger?
Call Unasource Sleep Center LLC at (248) 267-9370 and ask for Dr. Greenberger. Ask whether you need a referral and whether your insurance is accepted.
What does Dr. Marc Greenberger specialize in?
Dr. Marc Greenberger specializes in sleep medicine, with pulmonary disease 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. Marc Greenberger accept Medicare?
Medicare's clinician directory lists Dr. Greenberger 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. Marc Greenberger, or is something here out of date? Let us know. Find a sleep doctor near you.