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 / IL

CHARLOTTE ALLEN O'BRIEN, NP

NURSE PRACTITIONER

Graduated: 2008

NPI: 1902123938

Practice Locations (1)

OAK STREET HEALTH PHYSICIANS GROUP PC

4318 S STATE ST

CHICAGO, IL 606093701

7732859304

Source: CMS National Downloadable File, September 2026.

CHARLOTTE O'BRIEN, NP | HealthCareAtlasUSA