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 / MO

MICAELA E ONEIL CALLAHAN, MD

OBSTETRICS/GYNECOLOGY

Medical school: UNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE

Graduated: 2010

NPI: 1568783850

Practice Locations (2)

MERCY HOSPITALS EAST COMMUNITIES

615 S NEW BALLAS RD

SAINT LOUIS, MO 631418221

6362516000

MERCY WOMENS SERVICES LLC

615 S NEW BALLAS RD

SAINT LOUIS, MO 631418221

3142517955

Source: CMS National Downloadable File, September 2026.

MICAELA ONEIL CALLAHAN, MD | HealthCareAtlasUSA