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 / WA

BENJAMIN SIEMANOWSKI, MD

GASTROENTEROLOGY

Medical school: JEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY

Graduated: 2000

Also: INTERNAL MEDICINE

Offers telehealth

NPI: 1548301120

Practice Locations (1)

NORTHWEST GASTROENTEROLOGY PROFESSIONAL LLC

3111 WOBURN ST, SUITE 201

BELLINGHAM, WA 982266610

3607341420

Source: CMS National Downloadable File, September 2026.