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 / IA

DENA Z OLWAN

CLINICAL PSYCHOLOGIST

Graduated: 1992

NPI: 1588648596

Practice Locations (1)

401 DOUGLAS ST, SUITE 504

SIOUX CITY, IA 511011471

Source: CMS National Downloadable File, September 2026.

DENA OLWAN | HealthCareAtlasUSA