Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Patrick M Lassen, MD

Individual provider Urology Physician · NPI 1285632919

Patrick M Lassen, MD is an Urology in Longview, Washington. Graduated from Oregon Health Sciences University School of Medicine in 1990, 36 years ago. Practices with Salem Health, a 479-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
36
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
WA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

625 9th Ave Ste 120
Longview, WA 98632-2464
Phone: (360) 636-8950
Fax: (360) 636-8951
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Urology Physician (primary) Taxonomy 208800000X · Licence MD000037114 (WA)

Record details

NPI number1285632919
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 7, 2005
Last updated in NPPESMarch 3, 2020
Certification dateMarch 3, 2020
Mailing address625 9th Ave, Suite 120, Longview, WA 98632-2464

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyUROLOGY
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Salem Health — 479 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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