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 / MA

WILLIAM H ELLIS

CLINICAL PSYCHOLOGIST

Graduated: 1980

Offers telehealth

NPI: 1942278031

Practice Locations (1)

218 W MAIN ST

HYANNIS, MA 026013778

5087714640

Source: CMS National Downloadable File, September 2026.

WILLIAM ELLIS | HealthCareAtlasUSA