Dr. John Marshall, MD

With 21 years of practice, Dr. John Marshall is an established emergency medicine provider, MD, after earning their medical degree at Texas Tech University Health Science Center School Of Medicine in 2002. Dr. currently practices across 10 facilities, including Medical City Dallas Hospital in Dallas, Texas. Their National Provider Identifier (NPI) is 1437135563, 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. John Marshall as a lower-volume emergency medicine provider, treating approximately 240 Medicare beneficiaries and delivering 333 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.