Patrick Brennan, M.D., PH.D.

With 19 years of practice, Patrick Brennan is an established allergy/immunology provider, M.D., PH.D., after earning their medical degree at Perelman School Of Med At The University Of Pennsylvania in 2005. Patrick currently practices across 5 facilities, including Brigham And Women's Hospital in Boston, Massachusetts. Their National Provider Identifier (NPI) is 1053458406, 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 Patrick Brennan as a lower-volume allergy/immunology provider, treating approximately 31 Medicare beneficiaries and delivering 105 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.