Dr. William Bayer, MD

With 20 years of practice, Dr. William Bayer is an established endocrinology provider, MD, after earning their medical degree at Loyola University Of Chicago, Stritch School Of Medicine in 1986. Dr. currently practices at Dupage Medical Group Ltd in Bloomingdale, Illinois. Their National Provider Identifier (NPI) is 1528162898, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.

CMS Medicare data shows Dr. William Bayer as a moderate-volume endocrinology provider, treating approximately 594 Medicare beneficiaries and delivering 12K services in the most recent reporting year. That panel size indicates balanced experience across typical Medicare conditions.

Under the Physician Payments Sunshine Act, CMS reports that Dr. William Bayer received $1K in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.