Dr. Mark O'brien, MD

With 20 years of practice, Dr. Mark O'brien is an established family practice provider, MD, after earning their medical degree at Indiana University School Of Medicine in 1988. Dr. currently practices at Cooper Family And Pediatric Chiropractic Pc in Carmel, Indiana. Their National Provider Identifier (NPI) is 1124129267, 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. Mark O'brien as a lower-volume family practice provider, treating approximately 278 Medicare beneficiaries and delivering 3K services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.