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 / CA

WILLIAM T O CONNOR JR., MD

FAMILY PRACTICE

Medical school: UNIVERSITY OF CINCINNATI COLLEGE OF MEDICINE

Graduated: 1981

Also: GENERAL PRACTICE

Offers telehealth

NPI: 1639127632

Practice Locations (1)

300 MASON ST

VACAVILLE, CA 956884506

7074460422

Source: CMS National Downloadable File, September 2026.

WILLIAM O CONNOR, MD | HealthCareAtlasUSA