HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / RI

MARK STEPHEN O'NEILL, CSW

CLINICAL SOCIAL WORKER

Graduated: 2009

Offers telehealth

NPI: 1326428517

Practice Locations (1)

70 OAK ST, APT C

PROVIDENCE, RI 029091932

4012372203

Source: CMS National Downloadable File, September 2026.

MARK O'NEILL, CSW | HealthCareAtlasUSA