Dr. Benjamin Grannan, MD

With 12 years of practice, Dr. Benjamin Grannan is an established neurosurgery provider, MD, after earning their medical degree at Harvard Medical School in 2014. Dr. currently practices across 3 facilities, including Harborview Medical Center in Seattle, Washington. Their National Provider Identifier (NPI) is 1417360561, 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.

Dr. Benjamin Grannan's practice is located in ZIP 98104 (Seattle, Washington), which has an overall CartoChrome Healthcare Access Score of 97/100 (Healthcare Paradise). Patients in this area have comparatively strong access to primary care, specialists, and hospital services.

CMS Medicare data shows Dr. Benjamin Grannan as a lower-volume neurosurgery provider, treating approximately 115 Medicare beneficiaries and delivering 196 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.

Under the Physician Payments Sunshine Act, CMS reports that Dr. Benjamin Grannan received $279 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.