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

MAUREEN U WELKER, NP

NURSE PRACTITIONER

Graduated: 1998

NPI: 1386608438

Practice Locations (1)

OSO SPECIALTY INFUSION INC

26800 CROWN VALLEY PKWY, SUITE 360

MISSION VIEJO, CA 926918021

9496607126

Source: CMS National Downloadable File, September 2026.

MAUREEN WELKER, NP | HealthCareAtlasUSA